Abstract: A power switch device includes a switch box with a button pivotally connected thereto which is pivotally connected to an actuating member. An engaging member is movably connected to the actuating member and removably engaged with a block. A head connected to the actuating member movably compresses a conduct plate so that when the conduct plate contacts a terminal plate, the circuit is closed. A bimetal plate connected to the terminal plate has a pushing end contacting the engaging member so that when the current is overloaded, the pushing end is thermally deformed to push the engaging member away from the block and the engaging member drops due to gravity. The head is then lifted to release the conduct plate from the terminal plate to open the circuit.

Abstract: A switch structure comprises a control element, which comprises an alloy piece and a swing contact device. The alloy piece includes an actuating piece with a convex part, which has a upper side normally pushing the lower surface of the end part in the swing contact device so that the actuating piece ejects outwards and escapes from the end part when the alloy piece is overheated because of the current flowing through therein overloaded. Therefore, the end part falls down due to no support force and the head part of the swing contact device deforms upwards and does not press on the elastic contact piece. The elastic contact piece is released from the pressing of the swing contact device to eject upwards. Two joints connected in an electric loop are tripped. The object of rapid response, cutting power source, and safety is therefore achieved.

Abstract: A switch structure comprises a control element, which comprises an alloy piece and a swinging device. The swinging device has an actuating element used to actuate the swinging device when the actuating element is pushed. When the alloy piece is overheated due to overloading of current, it will deform toward the actuating element so as to eject the actuating element, which causes the swing device to swing outwards and is released from the supporting of the stopper in the switch body. Then, the swing device moves towards the original closing position, and the elastic contacting piece is released from the pressing of the swing device to eject upwards. Two joints connected in an electric loop are tripped. The object of rapid response, cutting power source, and safety is therefore achieved.

Abstract: A switch structure which includes an alloy piece, a contact control device, and a push device is disclosed. The contact control device includes an elastic part and connects to an end part so that the end part may reciprocally move with respect to the contact control device in a horizontal direction. The end part normally contacts with the upper side of the stopper placed in the switch body and is used to push the push device towards the end part when the alloy piece is overheated and strain is generated due to the current flowing through the alloy piece. The end part then elastically contracts and escapes from the stopper to fall down so that another end of the contact control device projects upwards and does not press the elastic contact plate. Therefore, the elastic contact plate may escape from the two contact points to cut off the power source rapidly by the elastic force to achieve the purpose of safety.

Abstract: A switch device has a conventional fuseless breaker device, a first conductive blade, a second conductive blade, a fixed plate, and a movable plate. The breaker device has a metal bar having two expansion coefficients, an insulator plate, a safety button, and a coiled spring. The metal bar contacts the first conductive blade. A pressing button which is disposed on the switch device has a first portion and a second portion. A lamp assembly is disposed in the pressing button. The lamp assembly has a break display lamp and a dark display lamp. The break display lamp is disposed in the first portion of the pressing button. The dark display lamp is disposed in the second portion of the pressing button.

Abstract: A switch structure comprises a switch case, a switch, a contact reed, a control element, a swinging device, and an alloy piece. The swinging device is assembled with the control element. The switch is coupled with the contact reed. When the alloy piece is overheated due to current overloading, it is deformed towards the control element so as to push the swinging device that is then swung away and released from the support of the switch case. As a result, the control element moves towards to an original off position. An elastic contacting piece is released from the pressing of the control element so as to be ejected upwards and break the power supply.

Abstract: A circuit breaker (10) is shown having a movable electrical contact (36) adapted to move into and out of engagement with a stationary electrical contact (38, 40). A current carrying thermostatic trip member (42) has a portion movable in response to changes in temperature with a motion transfer member (46) transferring the motion to latch/catch mechanism (20, 24, 30, 32). The catch portion (30, 32) comprises a generally U-shaped adjustment element (30) formed of thermostatic material whose legs are fixed to the base (32a) of a catch member (32) which in turn is pivotably mounted in the casing of the circuit breaker. The bight (30c) of the adjustment element is free to move in response to temperature changes relative to the catch member. Overcurrent will cause the thermostatic trip member to transfer motion to the bight of the adjustment element causing the adjustment element and catch member to pivot and release a latch to thereby open the circuit breaker.

Abstract: An overcurrent circuit breaker arranged inside an approximately cube-shaped, two-part insulating housing, having a chassis section and a locking section. Located between the parallel side walls of the housing sections is a switchgear with a contact bridge, the movement of which is guided parallel to the side walls and which extends in essentially longitudinal direction at a right angle to the side walls and while in the on position between two fixed contacts that are fastened inside the housing and are positioned on both sides of the movement plane for the switchgear. The fixed contacts are flat pieces akin to a knife blade and fit against the side walls and, respectively, form a contact point with their narrow, knifeblade type edges facing the contact bridge. With their rear sides opposite the contact points, the fixed contacts fit against a flank wall of housing. As a result of this, the fixed contacts are positioned in an especially space-saving manner in the corners of housing.

Abstract: A circuit breaker has a body providing a lever pivotally mounted on the upper end thereof. Two terminals are disposed within the body, wherein the first terminal forms a bimetal thereon. The terminals are electrically connected with each other in a normal state. A linkage is mounted on an end of the lever, which forms an isolated member on the lower end of the linkage. Pressing the lever, the isolated member of the linkage will moved upwards to separate the two terminals. When the lever is held by some heavy substances, the bimetal can be deformed to disconnect with the second terminal in over-current for cutting out the circuit.

Abstract: An electrical breaker includes a casing with a pushbutton pivotally connected to the top thereof, an alloy plate extending from one of two inside walls of the casing and connected to a first prong extending from the casing, a push member and an L-shaped member pivotally connected to the first end of the pushbutton, a biasing member biasing the push member to let the protrusion of the push member press against the other inside wall which has a recess defined therein. The distal end of the alloy plate is pushed by the push member to contact the second prong when the first end of the pushbutton is pushed, and the distal end of the alloy plate is disengaged from the second prong by the horizontal portion of the L-shaped member when an overload current passes through the alloy plate which curves to push the first end of the pushbutton upwardly.

Abstract: A switch breaker includes having a body; a press button having a link; a metal sheet having an electrical contact; a elastic member; a first terminal having a point contact; a second terminal; and a cover, characterized in that a protrudent part is formed on a suitable place on the metal sheet. After one end of the press button is pressed, the insulator does not push the protrudent part of the metal sheet so that the electrical contact contacts the point contact and the switch breaker is at a conducting state. When the current load is too large and the metal sheet is too hot and bent, or when the other end of the press button is pressed and the insulator pushes the protrudent part, the electrical contact is separated from the point contact and the switch breaker is at a nonconducting state. The design of pushing the protrudent part backward by the insulator to move the left end of the metal sheet backward can prevent the occurrence of arc between the electrical contact and the point contact.

Abstract: A titterboard type switch with security structure, wherein a relay unit is disposed between two terminal legs connected with power wires and an electrothermal conductor is connected between the relay unit and one of the terminal legs, whereby when powered on, the electrothermal conductor is slightly heated and in the case of overload, the electrothermal conductor creates high temperature. The relay unit is disposed with a resilient movable contact pushable by a sliding member for controlling whether the movable contact contacts with the other terminal leg or not. The sliding plate is pushed by a swinging plate which is shifted by a push button via a linking unit.

Abstract: A push button switch with override interruption structure, including a push button, a switch box, a front cover, a base, a support rod, an electric contact and an override interruption structure. The support rod is disposed under the bottom of the push button and the electric contact is fitted with the support rod, whereby by means of depressing the push button, the electric contact is moved downward to close a circuit. The override interruption structure includes a shaft seat disposed with an L-shaped resilient restricting cantilever having a projection. The override interruption structure further includes a power cutting member formed with a chamber at lower end facing the restricting cantilever. In the case of override, the bimetal blade is thermally deformed to act on the restricting cantilever, making the projection thereof disengaged from the chamber of the power cutting member, whereby the power cutting member is moved upward along with the push button by the restoring force into a power cut state.

Abstract: A plug with security device, including a housing, several conductive insertion plates adapted to be inserted into a power socket, conductive wires connected to an electric appliance and a security device. The insertion plates are connected with the conductive wires in the housing. The security device is disposed between at least one insertion plate and one conductive wire and includes a casing, a disconnector seat disposed therein, a thermal bimetal blade disposed on the disconnector seat, a movable contact disposed on the bimetal blade, a fixed contact disposed in the casing and connected with the conductive wire to naturally contact with the movable contact, and an insulative separating structure. When an excessively large current passes through the electric appliance, the bimetal plate is bent to separate the movable contact from the fixed contact and open the circuit.

Abstract: A safety switch built-in with protecting circuit is provided. The safety switch includes a housing having a button shade pivotally mounted thereof. Three pairs of conductive plates is provided and one of the conductive plates is provided with a first platinum conductive boss. The other conductive plate is provided with a alloy plate having a second platinum conductive boss corresponding to the first conductive boss. A push and pull rod having one end being movably passed through an opening and the other end is pivotally connected with the button shade. Characterized in that wherein the alloy plate is made from assembling instead of pressing process. The curvature is formed such that the alloy plate is provided with bi-directional breaking functions. Furthermore, the internal stress structure will not be damaged during the assembling process. Besides, the yield and accuracy of mitering an overload current can be readily attained via the formula of V=IR and W=VA.

Abstract: A fuseless plug with an overload safety circuit breaker having a thermal reactive spring leaf and an electric conductive sheet. When in normal use, the thermal reactive spring leaf and the electric conductive sheet are electrically connected by contacting mutually. If overloading or short circuiting occurs, the temperature will rise, while the thermal reactive spring leaf made of an alloy of two kinds of metal material has different coefficients of temperature, so that the spring leaf will be bent outwardly to release the electric conductive sheet to form a broken circuit state and to assure that no disaster such as a fire alarm will occur. After clearing, a push button can be pushed down to force the electric conductive sheet into engagement again with the spring leaf for use.

Abstract: A fuseless breaking switch comprises essentially a casing, an alloy blade, first, second, and the third conductive plate, a spring blade and an adjusting screw. The switching on (off) of the button allows a closed (open) circuit through the alloy blade and the conductive plates and an adjusting screw secured inside the casing will help ensure the sensitivity of dealing with different voltage loading through the adjusting to the curvature of the alloy blade by the adjusting screw.

Abstract: A circuit breaker comprises a lock (12) having a high position when the circuit breaker is triggered and a low position when the circuit breaker is set. The lock in the low position is held by a locking lever (10) against which the lock abuts. The lever cooperates with a device for detecting a current surge which, during a surge, disengages the lever so that the lock no longer abuts against the lever and is released in order to go back to its high position. The locking lever is movable between a high position and a low position, urged to its low position when the lock is set to low position, and associated with upward biasing means active (50) when the lock no longer abuts against the lever.

Abstract: A fuseless breaking switch comprising essentially a casing, an alloy plate, a first and a second prong, and a spring blade. The switching on of the button allows a closed circuit through the alloy plate and the prongs. An overload of current will cause the alloy plate to flex and thus break the circuit.

Abstract: A circuit protecting device somprises mainly a housing, an insulation piece, a bimetallic blade, a spring and a press button. The housing has a cover and a main body provided with two partition blocks forming a spring slot and a press button slot communicating with the spring slot. The bimetallic blade has an end fastened to one of two terminals and has another end provided with a contact piece in contact with another one of the two terminals. The spring embracing the outer end of the insulation piece is received in the spring slot of the main body of the housing while the press button is received in the press button slot of the main body of the housing. The inner end of the press button is provided with an insertion hole for receiving therein the outer end of the insulation piece.

Abstract: A surge absorbing element is parallel connected to an electronic device via a pair of communication lines. A normally closed thermal response switch is serially connected between the electronic device and the signal source on the input side of the surge absorbing element. When a surge voltage is instantaneously applied to the communication lines, the thermal response switch remains in the closed position and the surge absorbing element acts to suppress the surge voltage. When an overvoltage or over current is continuously applied to the communication lines, the thermal response pieces of the thermal response switch open and simultaneously release the movable body. Consequently, the electronic device is disconnected from the signal source, thus stopping the continuous overvoltage or overcurrent from flowing to the electronic device and the surge absorbing element. Simultaneously, the reset pin is projected through the casing.

Abstract: A rocker actuator switch having a frame which has a first projection extending therefrom which passes through a yoke portion of a rocker actuator that moves between on and off positions. The rocker actuator is pivotally connected to the frame by a snapping arrangement whereby a second frame projection is guided and slides along a flexible cantilevered beam, which is disposed in a sidewall of the rocker actuator, until the second projection enters a partial circular cutout in the sidewall of the rocker actuator. Upon entering the cutout, the flexible beam retains the second projection in the cutout where it is free to pivot.

Abstract: A push button operated circuit breaker with thermal tripping by way of a bimetal strip includes an angled contact bridge which is mounted within a switch housing to be freely pivotal and is urged in a tripping direction by a tripping spring against a contact lug of the bimetal strip projecting laterally for engagement with a contact piece of the contact bridge. The circuit breaker further including a connecting arm which is coupled for movement with the bimetal strip. The cylindrical exterior surface of a drum-shaped rotary body lies against the connecting arm and thus creates a kinematic connection between the rotary body and the connecting arm. When the switch housing is fully assembled, the drum-shaped rotary body is operative as an adjustment eccentric which is externally manipulatable by way of a hexagonal recess so as to adjust the tripping characteristic of the circuit breaker.

Abstract: A hand-controlled breaker comprises a housing (1), a control button (12), and a control bar (21). Two rods (15, 15') are mounted so as to pivot inside the control button, and extend downwardly outside the control button towards the cavity of said housing. Each rod comprises an oblique supporting surface (17, 17') oriented in an inward and downward position, and a second lower oblique supporting surface (19, 19') oriented in an inward and upward position. The four supporting surfaces surround and maintain a cylindrical part (20) coupled to an upper portion of the bar (21). The rods each further comprise an oblique supporting surface (58, 58') outwardly and upwardly directed to against a lower edge of a bore (10) of an upper portion (4) of the housing.

Abstract: An improved device for protecting an electrical load from a current overload combines an electrical switch and a re-settable circuit breaker in a single housing. The device avoids the use of gate plates, visually alerts an operator to the existence of a tripped conditions, and provides automatically self-aligning, evenly-wearing contacts for the switch.

Abstract: A low voltage high-amp circuit breaker (20) having a substantially reactangular bimetallic bistable element (41). The bistable element is attached to have one end move from a first normal electrically conductive position to a second non-electrically conductive position. The manual reset circuit breaker includes a manual reset lever (29) and a non-conductive heat resistant extension blade (64) connected to the reset lever via a rotatable shaft (56). The extension blade being positioned adjacent the moveable end of the bistable element and when the element is moved to its second position, the blade is moved to prevent the element from returning to its first conductive position until the circuit breaker is manually reset. A push-to-trip button (80) pushes plate (88) downward causing fingers (84) to move upward lifting bracket (92) to deform bistable element (41) placing the breaker in an open circuit condition.

Abstract: This invention relates to a circuit breaker switch having a cover, a housing, two copper plates, a bimetallic blade, a push button and a push rod, wherein the bimetallic blade acts as a bridging contact between the two copper plates at a rated current to conduct electricity. When there is a current overload, the bimetallic blade, because of its character, will bend and depart from the two copper plates to cut off current. The circuit may be open even if the current is not at an overload value by a user pushing the push rod inwardly to separate the bimetallic blade from the two copper plates when necessary. The contact points of the two copper plates are caused to stay in a switch-disengaging position by action of an insulating plate.

Abstract: A push button actuated excess current protection switch, particularly an on-board electrical system protection switch with manual actuation and bimetal controlled automatic tripping includes a switch latch (7) actuated by the push button (41) and a bimetal tripping device for releasing the switch latch (7) with the bimetal tripping device including a self-heated approximately U-shaped punched bimetal (101) which is connected electrically in series in the current path through the switch. The one free arm end (102) of the bimetal is fastened to the end of a connecting lug (5) fixed in the interior of the switch housing. Its second free arm end (104) is fastened to a connecting piece (106, 106') leading to a mating contact (9') that is fixed to the housing. The base (114) is formed by the deflectable end of the bimetal which is kinematically connected with the switch latch.

Abstract: A push-push (make-break) switch (43) including a thermally operated circuit breaker release is adapted for controlling an electric motor (42). The switch (43) may be employed by itself or used in conjunction with a standard control switch (41) connected to auxiliary contacts (15 and 18) which are normally closed but opened when switch (43) is activated. When switch (43) is momentarily activated, it becomes latched to continue operation of the motor (42) until the motor stalls upon completion of a task. The increased current draw of the motor (42) is sensed by a bi-metalic element (27) whose free end moves to automatically release the switch (43) and disrupt its continuity path. The switch (43) is in a compact, self-contained, design which provides various different operational features. In automotive applications, switch (43) provides convenient express operation of motor operated accessories such as power windows and the like.

Abstract: A circuit breaker is shown having movable contacts carried by an operating member which moves between a circuit breaker contacts closed position and a circuit breaker contacts open position. An auxiliary switch has electrically conductive, flexible contact members adapted to engage an electrically conductive bridging shaft element carried by the operating member when the operating member is in one of its two positions to provide means for indicating the status of the circuit breaker.

Abstract: A circuit breaker characterized by its ability to qualify for controlling high electrical capacity in a concise configuration employing two sets of contacts separated by a dielectric barrier having anti-arcing features to minimize arcing in a minimal size circuit breaker. Control of the contact movement is through a pivoted actuator and over-center linkage in conjunction with a bell crank lever operating a spring mounted contact moving through a short radius.

Abstract: A two pole breaker employs molded resinous parts including a base and support frame structure. Supported to a medial plane frame by a pin is a rocker handle having a linkage crank arm at each side of the medial plane and a rotatable latch lever having trip surfaces accessible to a bi-metallic overload actuator of each pole. A rocker member generally transverse to the normal position of the latch lever has a latch surface which cooperates with a latch keeper on the latch lever which is held engaged by a spring between the latch lever and the medial plane. The rocker has parallel side members, each supporting a switch actuator surface on each side of the medial plane frame. Identical linkage connections on each side of the medial plane connect the crank arms to the respective side pieces of the rocker.

Abstract: A circuit breaker having two subassemblies, connected via snap-lock means, which mesh together to provide manual operation with "trip free" response to overloads and no latch load on the bimetallic element.

Abstract: The invention relates to a contact breaker of the type that includes a slider (22, FIG. 1) that slides longitudinally within a housing to allow a moving contact 50 (FIG. 3) on a sudden actin bimetal strip (44) to pass through a slider opening (62) against a fixed contact (40), or to keep the contacts apart after they have briefly moved apart. The state of the contact breaker is indicated by a signalling electrical circuit which includes a moving contact (80, FIG. 1) mounted on the slider and having a pair of clips that connect coplanar signalling contacts (68, 70). The slider has a lower extension (92, FIG. 4) that prevents arcing between power contacts. The housing includes two half-casings (16, 18, FIG. 7) joined at a longitudinal joint 19, one carrying power terminals (32, 34) and the other carrying signalling terminals (74, 76). The slider keeps the contacts (50, 40, FIG. 3) separate even if the front housing surface is blocked.

Abstract: A push-button actuated overload protection switch, particularly an on-board protection switch having instant ON switching as well as manual, thermal and/or electromagnetic tripping. The switch has various components such as a switch housing, a pushbutton and an associated spring, a contact bridge and a toggle lever device, a detent lever and a detent pawl, as well as two switch rods, these parts being interconnected to obtain the desired switching function.

Abstract: A circuit breaker device has a chamber in which is disposed a single break contact system using low contact resistance material mounted on movable and stationary supports arranged in a loop configuration in order to direct arcs between the contacts through an arc chute into a remote portion of the chamber. A push-button is connected through a kinematic linkage which transfers motion using minimal frictional engagement to a movable contact to bring the movable contact into and out of engagement with a stationary contact and to latch the contacts in engagement during normal operation. A cantilevered current carrying bimetal transfers motion caused by I R heating of the bimetal to an ambient compensating bimetal connected to the latch mechanism. The kinematic linkage includes a latch surface which engages a rollable cylindrical reaction surface of the latch mechanism to cause the movable contact to come into engagement with the stationary contact upon depression of the push-button.

Abstract: A unitary switch and circuit breaker (10) includes a switch circuit (14, 16, 22, 24, 26, 56, 57, 58) with first and second contacts (28, 30), the switch circuit (14, 16, 22, 24, 26, 56, 57, 58) being actuable to assume a first condition (FIG. 4) in which the contacts (28, 30) are open and a second condition (FIG. 5) in which the contacts (28, 30) are closed, and a circuit breaker (24, 26, 32, 42, 56, 57) integrally formed with the switch circuit (14, 16, 22, 24, 26, 56, 57, 58) for actuating the contacts (28, 30) to interrupt current flow through the contacts (28, 30) in response to the current flow exceeding a predetermined level and for subsequently preventing the resumption of current flow through the contacts (28, 30) until reset.

Abstract: An overload protection switch having a push button for manually initiating actuation of the overload protection switch and a movable contact member forming a switching path and having at least one fixed contact. There is a lockable trip mechanism actuated by the push button for controlling the movable contact member during actuation of the overload protection switch and a bimetal element which includes a locking lever pivotal into a locking position and pivotal into its unlocking position. A trip slide is articulated to the movable contact member and is charged in a turn-off direction. The trip slide is additionally supported in its path of movement by a housing groove at a counterslope fixed to the housing. An essentially wedge-shaped inner angle is formed to reduce friction forces at the locking lever and produce a lower tripping force at the bimetal element.

Abstract: The insulating housing of the device supports two spaced-apart stationary terminal/contact assemblies. A resilient, thermally-responsive, snap-acting, movable contact support member, which has a movable contact and a cam-follower thereon, is connected at one end to one assembly and is movable to three positions relative to a stationary contact on the other assembly, namely: a contact-closed position wherein the movable contact engages the stationary contact, a contact-open position and a contact-tripped position. An outwardly projecting rod-like actuator slidable on the housing, and which has a cam on its inner end, is axially movable inwardly and outwardly between an "on" switch-closed/breaker-reset position and an "off" switch-open/breaker-tripped position (wherein it is biased by a spring), respectively. In actuator "off" position, the cam blocks the contact support member and prevents the movable contact from closing.

Abstract: A circuit breaker having a thermally operated snap acting bimetallic actuator is miniaturized for replacing or retrofitting in place of a conventional blade or clip type fuse heretofore used for limiting current overload in a given current carrying circuit and is standardized to permit manufacture of the circuit breaker for operation in either the cycling or non-cycling mode, by providing a sized and shaped housing in which the interacting elements are so mounted and aligned that the terminals are parallel to each other and to the longitudinal line of the housing, and the bimetallic actuator is so mounted, nested, and longitudinally aligned in assembled position between the interengaging elements to provide substantial amplitude of movement of the bimetallic element and the contact thereon for coacting relation with a generally fixed contact in the cycling mode.

Abstract: Disclosed is a bi-metallic strip connected to one electrical contact tab and holding a contact which works together with a fixed contact carried by another electrical contact tab. The mobile contact and the connection of the other tab with the bi-metallic actuator are diametrically opposed along a diameter that is inclined with respect to the median plane where the plane passes through the center of the bi-metallic actuator and between the coplanar connecting tabs.

Abstract: A circuit breaker device has a chamber in which is disposed a single break contact system using low contact resistance material mounted on movable and stationary supports arranged in a loop configuration in order to direct arcs between the contacts through an arc chute into a remote portion of the chamber. A push-button is connected through a kinematic linkage which transfers motion using minimal frictional engagement to a movable contact to bring the movable contact into and out of engagement with a stationary contact and to latch the contacts in engagement during normal operation. A cantilevered current carrying bimetal transfers motion caused by I.sup.2 R heating of the bimetal to an ambient compensating bimetal connected to the latch mechanism. The kinematic linkage includes a latch surface which engages a rollable cylindrical reaction surface of the latch mechanism to cause the movable contact to come into engagement with the stationary contact upon depression of the push-button.

Abstract: A circuit breaker utilizes an elongated contact spring member which extends along the length of a breaker housing in an inclined relation with respect to the longitudinal axis of the housing. The contact spring member is fixed at its one end and carries on the other end a movable contact engageable with a stationary contact. The contact spring member is self-biased in the direction of opening the contacts and is operatively connected to an actuator which is slidably received in the housing for movement between an outward and inward positions. The inward sliding movement of the actuator is translated into the contact closing movement of the contact spring member with the attendant deflection of the contact spring member against its bias.

Abstract: A push button actuated overload protection switch includes a bimetal member which holds a contact bridge in a latched ON position. The contact bridge is configured as an approximately rectangular angle lever and is mounted on a switch rod so as to be freely pivotal and displaceable in the axial direction. The contact bridge is under the pressure of a switch spring which is supported at the switch rod. During turn-off the contact bridge is released by the bimetal member and pressed against an oblique abutment at the housing and pivoted into an oblique engagement position, whereby a projection on the switch rod engages the contact bridge. Subsequent actuation of the push button causes the contact bridge to be transferred into its ON position in which the pressure of the switch spring presses it into engagement behind a contact piece of the bimetal member and into contact with a contact terminal.

Abstract: In an overload protective circuit breaker, a fixed contact element and a bimetal contact element are arranged in parallel beside each other. When a current overload occurs and the bimetal junction is heated, a movable contact post on a snap disc mounted on the bimetal contact element moves away from a fixed contact post on the fixed contact element, thereby breaking circuit, and an insulating wall piece of a slider body will be moved automatically into the gap between the two contact posts so as to break circuit and cut off an arc forming between the two moving-apart posts and accelerating cooling of the bimetal junction. Returning the circuit breaker to circuit-making position requires depression of a push button which is preferably a leg of an L-shaped switch member, the other L-leg being constituted by the slider body.

Abstract: A split case circuit breaker is fitted with a bracket assembly which defines a rectangular boss to cover the smaller circuit breaker boss on the front face of the breaker housing. An actuator link operates the otherwise conventional breaker mechanism inside the housing, and has a free end portion coupled to a rocker pivotably provided in a rectangular recess defined for it in the rectangular boss of the bracket assembly.

Abstract: A single pole or multi-pole, manually or thermally operable overload protective circuit breaker contains in its main switching chamber an elbow lever which consists of an actuating arm and a main contact arm, and functions as active connection between an actuating element and a contact bridge member. The ends of the actuating arm and the main contact arm, which face away from the elbow joint, are articulatedly connected with a pressure button or the like actuating element and the contact bridge member, respectively. In any positions of swivelling from a folded, i.e. the circuit-breaking, to a stretched, i.e., an arrested circuit making position, of the elbow lever, the centers of the swivel joints are located on the central longitudinal axis of the circuit breaker, which axis extends toward the depth of an insulating housing of the latter.

Abstract: A push button-actuated overload protective circuit breaker with bimetal cutout comprises a housing between the sidewalls of which two contact segments are held in position, and a push button and a pressure spring associated therewith are guided for longitudinal displacement therebetween. The ends of the contact elements which protrude from the housing are devised as plug-in prongs arranged in parallel with each other. In order to provide a circuit breaker of such small size that it can be plugged into a flat-shape fuse female plug socket, the contact elements are provided in a middle zone thereof, each with a step-like bend the height of which corresponds to about half the height of the interior space in the housing. The bent contact ends then come to rest against the opposite internal surfaces of the housing sidewalls.At one of the contact ends of a first contact element there is fastened a bimetal snap spring with one side thereof and extends transverse to the direction in which the contact elements extend.

Abstract: A bell-crank-like switching connector is supported on a switch rod having a pushbutton such that it is pivotable and is displaceable along the switch rod. A first lever arm of the switching connector is lockable underneath a protrusion of a bimetallic strip. A second arm bears a contact piece associated with a fixed contact piece. Tabs protrude beyond a latching edge of the first lever arm and upon switching on of the switch they slide over lateral regions of an associated latching edge of the protrusion of the bimetallic strip and thereby make a wear-producing mechanical contact of the two latching edges impossible. The switching connector is exposed to the pressure of a switch spring coaxial with the switch rod. A button spring acting upon the pushbutton and having a substantially smaller spring rate is likewise disposed coaxially with the switch rod and is supported on the switching connector.

Abstract: A miniaturized plug-in cutout/switch is controlled by a push-button (1) and comprises a connection and disconnection mechanism using a captive ball (4d) circulating in a track cage (4a), having two positions selected by successive applications of pressure to the push-button (1) corresponding to the switch connected and switch disconnected states. The cutout/switch includes an independent locking mechanism for a movable contacts (11) which is operated by a bimetallic strip (8) which triggers the opening of the contacts when a current overload occurs in the protected circuit. The simple design of the apparatus permits a miniaturized construction which is particularly advantageous for its use on panels where small dimensions and the rationalization of its shapes make it suitable, for example on aircraft panels.