Abstract: A circuit breaker includes a switching contact arrangement and a drive apparatus which operates it, with the connection between the switching contact arrangement and the drive apparatus being designed such that it is detachable. For this purpose, a contact support of the switching contact arrangement contains a coupling bolt, which produces a hinged connection to a lever arrangement for the drive apparatus. A holding piece allows a actuating shaft of the drive apparatus to be rotated to a position, and to be fixed in this position. This allows the switching contact arrangement to be removed without any problem, and subsequently to be replaced by another switching contact arrangement. Once the control panel for the circuit breaker has been removed, the holding piece can be placed on the actuating shaft and can be attached to a front housing body of the circuit breaker where the control panel would otherwise be located.

Abstract: A contactor assembly includes a stationary assembly, a movable assembly that is slidably coupled with the stationary assembly, and a contact assembly coupled within the stationary assembly and the movable assembly. The contact assembly is movable between a first switching position where an electrically closed circuit is established and a second position where an electrically open position is established. The stationary assembly has a solenoid housing that is used to move the movable assembly between the first position and the second position. The solenoid housing may include a first coil and a second coil therein. Further, a pair of magnets is positioned between the solenoid coils and the housing to provide magnetic flux to maintain the contactor in an electrically closed position.

Abstract: A protective switch includes a switch housing, a switching mechanism for closing and opening a movable contact, a tripping mechanism instantaneously pulling a plunger upon detection of an instant current, a tripping control device, an alarm switch, and a trip member. The trip member is divided into an upper trip member away from a bottom of the housing, and a lower trip member close to the bottom of the housing urged by a back spring. The upper trip member includes a plunger operating section opposed to an operating member of the plunger and a switch operating section opposed to an actuator of the alarm switch. The lower trip member includes a locking member operating section opposed to a locking member of a switching mechanism and a tripping section opposed to an operating member of a tripping control device.

Abstract: A contact block assembly comprising a pusher having a body portion; a window formed in the body portion; a movable contact positioned within the window; a recess formed in the body portion; a first spring positioned within the recess and abutting the movable contact; and second spring positioned outside the pusher and abutting the movable contact is disclosed. A method of assembling a contact block assembly, the method comprising the steps of inserting a first spring into a recess in a pusher; inserting a movable contact within a window of the pusher and in contact with the first spring; and positioning a second spring outside the pusher and in contact with the movable contact.

Abstract: An AC electromagnet for use in electric switchgear includes a fixed, U-shaped magnet core positioned symmetrically to a central plane and a movable armature that is guided during its translational stroke by guide devices. The armature is T-shaped and positioned symmetrically to the magnet core, and has a cross leg to close the magnetic circuit and a central leg, the central leg being oriented toward the central web of the magnet core. An air gap is formed between the free end of the central leg and the center of the central web transversally to the longitudinal axis of the central leg. Leg heads are formed on the lateral legs of the magnet core, enlarged with respect to the cross-section of the lateral legs. The internal profile formed by the magnet core and the enlarged leg heads has a square or rectangular design, into which the driving coil is insertable, and the driving coil fills the yoke profile almost completely.

Abstract: A field configurable contactor is disclosed. The contactor preferably includes a plurality of spaces adapted to receive any number, up to its limit, of contact modules. Each contact module preferably includes a pair of contacts and a spring biased cam follower which opens and closes the contact pair when a cam profile of the contactor moves according to energization or de-energization of the contactor. The contact module can be either “normally open” or “normally closed” depending on its initial placement onto the contactor relative to the cam profile. A latch assembly in the contactor may hold the contactor mechanically during de-energization.

Abstract: A contact assembly for use in an electrical switching apparatus has an actuator. An enclosure comprises an interior space housing first and second stationary contacts fixedly mounted in spaced relation with one another in one of a normally closed position or a normally open position. A pusher is movably mounted in the enclosure and is selectively driven by the actuator to move between a normal position and an actuated position. The pusher comprises a top wall, a bottom wall and first and second side walls connected between the top wall and bottom wall to define an opening having respective first and second ends. First and second longitudinally spaced top ribs are on an inside of the top wall proximate the respective first and second side walls. First and second longitudinally spaced bottom ribs are in an inside of the bottom wall proximate the respective first and second side walls and laterally offset from the respective first and second top ribs. A movable contact is received in the opening.

Abstract: An electromechanical contactor that houses an electromagnet and a mobile contact carrier within one body. The electromagnet 20 is situated at the rear of the body 10 and a command wiring plane PB is situated at the front of the power wiring plane PA. The command terminals B and the control terminals C are arranged in a forward command/control terminal block 60. The coil terminals 26 are connected to the command terminals B by transverse conductors 27 housed in grooves made between an internal surface of the body and an external surface of an arch-shaped casing.

Abstract: An auxiliary switch block is provided for attachment to a basic device, while maintaining forcible guidance. The contact carrier of the auxiliary switch block is supported by guide means.

Abstract: A circuit breaker includes a housing, line and load terminals, first and second circuit breaker mechanisms, an operating handle having on and off positions, and first and second links from the operating handle to the respective first and second operating mechanisms. Each of the circuit breaker mechanisms includes a set of separable contacts in series with the other separable contacts between the line and load terminals, an operating mechanism for moving the corresponding separable contacts between open and closed positions, and a trip mechanism cooperating with the corresponding operating mechanism for moving the corresponding separable contacts from the closed to the open position thereof. The first and second links engage the first and second operating mechanisms to move the first and second separable contacts, respectively, between the corresponding closed and open positions thereof responsive to the on and off positions, respectively, of the operating handle.

Abstract: An electromagnetically actuable device has a magnetic core proximate an armature and a coil selectively energized to draw the armature to the magnetic core. The armature and magnetic core are of laminated magnetic steel and have mating surfaces. At least one of the armature and magnetic core includes conductive weld or braze lines for integrally securing laminations together to define a conductive path proximate the mating surface to provide a shading coil.

Abstract: A signal accessory for a molded case circuit breaker, with the circuit breaker having an operating mechanism with a cradle pin, a cross bar and a trip bar and a main breaker cover. The signal accessory comprises a signal accessory mounting having a bottom mount and a top mount coupled to the bottom mount with the top mount configured to receive a switch and engage the breaker cover in an accessory socket. A switch member is rotably mounted on the bottom mount with the switch member having an actuator lever in contact with the operating mechanism of the circuit breaker and an actuator pad in contact with a switch mounted on the top mount. When the circuit breaker is opened or closed the operating mechanism moves a cross bar coupled to the contact arm. The cross bar moves the actuator lever of the switch changing the state of the switch.

Abstract: A circuit breaker (10, 12) includes a sensing circuit (48, 50, 52), a control circuit (46), an actuator (42), an operating mechanism, and an interlock mechanism (70, 94). The sensing circuit (48, 50, 52) is configured to generate the sense signal representative of a power signal flowing through a power circuit (54, 56, 58). The control circuit (46) has a frame (74, 76) and is configured to receive the sense signal and to provide a trip signal on a first terminal (68). The actuator (42) is external to the control circuit frame (74, 76) and has a second terminal (98) coupleable to the first terminal (68). The actuator (42) is configured to receive the trip signal on the second terminal (98). The operating mechanism is coupled to the actuator (42) and is configured to open and close the power circuit in response to actuation of a lever (36). The actuator (42) is configured to actuate the lever (36) in response to the trip signal.

Abstract: An electromagnetic switching device includes a housing and a plug-in module which can be inserted into the housing at an insertion point in a direction of insertion. The plug-in module holds a magnetic yoke, attached to which is a coil unit. Two extensions, which point respectively to the front and to the rear in relation to the direction of insertion, are formed on the magnetic yoke. In order to retain the magnetic yoke, a retaining bracket extending transversally in relation to the direction of insertion, overlaps one of the fixing extensions and engages two retaining tongues from below, said tongues being formed as one-piece with the plug-in module.

Abstract: To reduce the rebound of the main armature with contact carrier in response to the switching operation of a contactor, magnetic-chamber base of contactor housing is provided with two support areas for the magnet yoke, said areas having different resiliencies. To this end, the magnetic-chamber base, designed so as to be capable of vibrating, has a supporting strip whose ends act as magnet-supporting areas.

Abstract: In an instantaneous-tripping circuit breaker, a heater-mounted main bimetal, a shifter of a differential shifter mechanism, and an adjustment dial of a thermal overload/open-phase tripping device are removed from a standard circuit breaker equipped with a breaking section, an opening and closing mechanism section, a thermal overload/open-phase tripping device, and an electromagnetic instantaneous tripping device in a case. Instead, a trip coil of the instantaneous tripping device is connected to a main circuit via a connection conductor of a low resistance, a test-tripping part is mounted in place of the shifter of the differential shifter mechanism, and the adjustment dial is replaced with a dummy dial. Accordingly, the standard circuit breaker is changed to an instantaneous-breaking circuit breaker.

Abstract: The circuit breaker includes a stationary contact member having a stationary contact, a movable contact member having at one end a movable contact contacting and separating from the stationary contact and having at the other end a rotational center, a case surrounding the stationary contact and the movable contact and defining a pressure accumulating space at one side of an arc generation position at which an electric arc is generated for temporarily storing a pressurized gas pressurized by the arc generated between the stationary and the movable contact upon a current interruption, and an exhaust port disposed at the other end of the arc generation position in the case so that the pressurized gas stored within the accumulation space upon the current interruption is exhausted by passing between the stationary contact and the movable contact.

Abstract: A contactor having electromagnetically operated contacts, wherein main contacts and connections for power supply are arranged in a bottom area of the contactor and contact control means such as electric magnet and coil are arranged above the main contacts. The contactor includes a contactor enclosure being sequentially detachable in two dependent, successive steps through a locking element utilized by both.steps, such that in a first step access is provided to the contactor main contacts, and in a second step access is provided to the electric magnet and coil. The locking element is formed to engage a first and second arresting seat defined in the contactor enclosure. The arresting seats are arranged to urge the locking element into engagement with the second arresting seat as the locking element is released from engagement with the first arresting seat.

Abstract: The present invention provides an electrical contactor for connecting and disconnecting an electrical power source to an electrical device wherein the electrical power source is electrically connected to a line terminal having a line terminal electrical contact and the electrical device is electrically connected to a load terminal electrical contact. The electrical contactor contains a plurality of electrical contacts which contact the line and load terminal electrical contacts.

Abstract: A latching magnetic relay assembly comprises a relay motor with a first coil bobbin having a first excitation coil wound therearound and a second coil bobbin having a second excitation coil wound therearound, both said first excitation coil and said second excitation coil being identical, said first excitation coil being electrically insulated from said second excitation coil; an actuator assembly magnetically coupled to both said relay motor, said actuator assembly having a first end and a second end; and one or two groups of contact bridge assemblies, each of said group of contact bridge assemblies comprising a contact bridge and a spring.

Abstract: In relation to a circuit breaker, a left-side accessory switch storage section and a right-side accessory switch storage section are provided in a breaker case 1. A contact point of an ancillary switch 7 provided in one of the accessory switch storage sections is opened or closed in conjunction with an output protrusion 6a formed on an open-close lever 6 of an open-close mechanism section 3 on the main unit. A contact point of an alarm switch 9 provided in the remaining accessory switch storage section is opened or closed in conjunction with an alarm output plate 8 which operates in association with tripping action of the breaker. The output protrusion 6a is caused to oppose an operation lever 7a of an ancillary switch which is formed into a symmetrical bifurcated shape and which is provided in the accessory switch storage section. The alarm output plate constitutes a pivotal lever coupled to a toggle shaft 3a of the open-close mechanism section.

Abstract: An arcing chamber assembly is described having two side walls, a contact compression spring, a contact link, a slide which can be mounted one behind the other in the interior of the arcing chamber assembly, just by stacking them from one side. For this purpose, the arcing chamber assembly includes a passage, whose length is at least equal to the length of the contact link on the component supply side.

Abstract: A precision location system for a circuit breaker utilizing a phase cassette concept is disclosed. A cover plate is mounted to at least one of a plurality of single-pole units having a circuit breaker operating mechanism positioned thereon. The cover plate is configured to precisely align an actuator precisely located on the cover with the circuit breaker operating mechanism. The actuator trips a latch of the operating mechanism, thereby tripping the entire circuit.

Abstract: A safety relay comprising a separating wall, an electromagnetic drive located on a first side of the separating wall comprising a coil with core and yoke, the coil being connectable to a control current, the core being oriented parallel to the separating wall, and a movable armature, a comb located on a second side of the separating wall capable of moving parallel to the separating wall by means of the armature, and a row of several contacts located on the second side of the separating wall actuated by the drive comb, each of the contacts comprising at least two contact elements arranged on an electrically insulating carrier part each of the contacts being connected with a current connection element, at least one of the contact elements being formed by an elongated contact spring arranged between the comb and the separating wall, the contact spring being arranged with a spring longitudinal axis crosswise to the direction of the movement of the comb, forcibly guided by the comb and by a spring foot at one end

Abstract: A latching electromagnetically actuable device comprises an electromagnet and an electrical coil. The electromagnet comprises an armature and a core. At least one of the armature and the core is of a magnetically hard material. A housing supports the electromagnet and the coil. Energizing the coil in a first direction magnetizes the magnetically hard material to draw the armature and core together and latch the electromagnet. Energizing the coil is a second direction releases the electromagnet.

Abstract: An electromagnetically actuable device includes a base. A magnetic core is fixedly mounted to the base. An armature is movably mounted to the base proximate the magnetic core. A coil is fixedly mounted to the base and is selectively energized to draw the armature to the magnetic core. The armature and magnetic core have mating surfaces adapted to provide three contact areas in a triangular configuration to provide minimal magnetic air gap and a stable interface when the coil is energized.

Abstract: An electromagnetically actuable device has a magnetic core proximate an armature and a coil selectively energized to draw the armature to the magnetic core. The armature and magnetic core are of laminated magnetic steel and have mating surfaces. At least one of the armature and magnetic core includes conductive weld or braze lines for integrally securing laminations together to define a conductive path proximate the mating surface to provide a shading coil.

Abstract: A battery cut-off device and method, The device comprising, first and second electrical contacts; a bridge contact movable between a first, closed position in contact with the first and second contacts and a second, open position spaced from the first and second contacts; a magnetic attraction unit including a magnetic element for providing a magnetic field sufficient to hold the bridge contact in the closed position, and a contact separator operable to alter the magnetic field and cause the bridge contact to move to the open position.

Abstract: A combination includes a contactor and a soft starter. The soft starter is mounted on the contactor.

Abstract: The invention relates to an electromagnetic switching device, especially a contactor, comprising a base (1), an arc chamber (2) removable from the base (1), a contact bridge support (4) and a spring-loaded locking element (5). The contact bridge support (4) projects into the arc chamber (2) and can be displaced in a direction of actuation (x). The contact bridge support can be locked by means of the locking element (5) when the arc chamber (2) is taken off. The locking element (5) is configured as a lever that is swiveled about a swiveling axis (10) which extends in perpendicular to the direction of actuation (x).

Abstract: A circuit breaker programmer enclosure in the form of a plastic housing having an external access door houses the electronic trip unit and accessories that control the circuit breaker operation. The door assumes two positions when arranged on the housing for both excluding and allowing access to the circuit breaker rating plug and trip unit adjustment knobs. In one position, access is made to both the rating plug and trip unit adjustment knobs while in another position access to the rating plug and trip unit is denied.

Abstract: The invention relates to an electromagnetic switching device comprising a housing (1) and a plug-in module (3) which can be inserted into the housing (1) at an insertion point (2) in a direction of insertion (x). The plug-in module (3) holds a magnetic yoke (4), attached to which is a coil unit (20). Two fixing extensions (7), which point respectively to the front and to the rear in relation to the direction of insertion (x), are formed on the magnetic yoke (4). In order to retain the magnetic yoke (4), a retaining bracket (13) extending transversally in relation to the direction of insertion (x), overlaps one of the fixing extensions (7) and engages two retaining tongues (15) from below, said tongues being formed as one-piece with the plug-in module (3).

Abstract: The invention concerns a protection relay, in particular of the thermal type, recessed relative to its front face (24), a recess acting as through passage for interconnection of the conductors (C) between the terminals of the relay control (23) and of the contact switch (16). The recess (27) is concealed in normal operation by a shutter consisting of a flap (26) or a fixed part (26′) of the housing (20). The interconnection conductors can consist of individual cables (C) or can be integrated to a precabling addition (40) housed in the recess.

Abstract: The invention relates to an electromagnetic switching device, in particular a contactor, comprising a switching device housing (2) and a plug-in module which can be inserted into the latter and which contains a coil form (12) for a coil. A tripping element (60) is mounted on a housing section (40) of the plug-in module (4). Said element is designed to mechanically actuate the contact unit (30) of an electric switch (24) for producing an economy connection. The switch (24) is mounted on a support structure (printed-circuit board (22)) that is located in the plug-in module (4), with a supporting contour (70) of said switch adjoining a bearing contour (72) of the housing section (40).

Abstract: An electromechanical contactor that houses an electromagnet and a mobile contact carrier within one body.

Abstract: A modular, multi-phase electrical relay contactor assembled from a number of electrical relay contactor units. Each unit has a housing, an electromagnetic motor located within the housing, a pair of stationary contacts attached to the housing, a moveable contact, and a moveable contact carrier. The moveable contact carrier is engaged with the moveable contact and has a metallic clapper plunger attached to its upper end. A protrusion extends from one side of the moveable contact carrier and an aperture, sized to receive the protrusion of another electrical relay contactor unit, is formed through another side of the moveable contact carrier. A plurality of units are adapted to be connected together such that when engaged, the protrusion extending from the moveable contact carrier of a forwardly located unit will fit into the aperture formed in the moveable contact carrier of a rearwardly located unit, thereby providing synchronous movement of the plurality of moveable contact carriers and the moveable contacts.

Abstract: An electromagnetic contactor that is designed for error-free assembly. The housing includes a contactor carrier interference that fixes the orientation between the housing and contact carrier. Orientation between the contact carrier and the armature is fixed by an offset elliptical joint. Pole shader interferences fix the orientation between the coil cover subassembly, the armature and the magnet. Shoulders located on two of four base legs fix the orientation between the housing and the base. The base includes a rail spring, spring catches, upper and lower catches that allow the contactor to be mounted on a DIN rail without using tools.

Abstract: A system includes a switching device, a sound device and an evaluation device. The switching device includes a housing and a contact system disposed in the housing, the contact system including a contact piece carrier and a contact piece disposed on the contact piece carrier. The sound device produces and captures structure-borne sound waves so as to determine an equivalent criterion for determining the remaining service life of the contact piece. The evaluation device evaluates the equivalent criterion.

Abstract: The utility model discloses an alternating current contactor, including a foundation-support and a pedestal. A yoke iron on which mounts a coil unit is set inside the said foundation-support, and an armature iron and a contact unit are set in the said pedestal. The characteristics are that one side of the said foundation-support is open, and the coil unit and the yoke iron are constituted into a whole via a supporting board and buffer springs, and then it is fixed on the convex face of pulling part of the said foundation-support. A baffle plate with openings is on the top of the foundation-support, and a repelling force spring is installed between the baffle plate on the top of the foundation support and the armature iron. The coil unit can be easily inserted into or pulled out from the opening of the foundation-support, so that either repairing or replacing the coil unit become rather convenient.

Abstract: The present invention provides a circuit breaker (10) and a cover (20) for a molded case circuit breaker having an operating mechanism (40) and an intermediate latching mechanism (52) with the cover (20) comprising a substantially planer member having a central opening (29) and an accessory compartment (22) formed in the planer member on either side of the opening (29) with the accessory compartment (22) configured to accept a plurality of different types of accessories (20) and having a plurality of holes (24) wherein a circuit breaker accessory (80) is nested in the accessory compartment (22) and is in contact with one of the operating mechanism (40) and the intermediate latching mechanism (52) within the housing (12).

Abstract: A low-voltage switching device includes a guide insert for receiving the bridge contact of the device. The guide insert can be fixed without play inside the housing of the switching device. The bridge contact is mounted in the guide insert in a manner that permits it to linearly move counter to a spring force.

Abstract: A circuit element has a substrate with a set of spaced switch leads thereon and an overlay magnetically retained on the substrate with a shorting strap on the overlay in facing relation with the conductors of the substrate. The shorting strap is arranged to engage at intersection points at least two of the switch leads when the overlay is in place on the substrate to electrically connect the two switch leads. The shorting straps of different overlays are uniquely arranged to connect selected pairs of switch leads.

Abstract: A latching magnetic relay assembly comprises a relay motor with a first coil bobbin having a first excitation coil wound therearound and a second coil bobbin having a second excitation coil wound therearound, both said first excitation coil and said second excitation coil being identical, said first excitation coil being electrically insulated from said second excitation coil; an actuator assembly magnetically coupled to both said relay motor, said actuator assembly having a first end and a second end; and one or two groups of contact bridge assemblies, each of said group of contact bridge assemblies comprising a contact bridge and a spring.

Abstract: A contact element of a relay, operative for closing and breaking a power supply circuit, respectively, and comprising a contact element (5) for establishing a current path over a pair of connection means (3, 4) in the circuit closing mode, the contact element being received in a socket (10) that is arranged to be movable relative to the relay, and a spring element (22) is operative for holding the contact element in the socket such that the contact element is detachable from the socket against the action of said spring element, in a circuit breaking mode.

Abstract: The present invention relates to a set of electrical units for controlling power units, comprising a contactor breaker (CD) with a plurality of current-breaking poles actuated by a solenoid (E) and by a control and slipping mechanism (D, S) on the one hand, and by an auxiliary module (MS) plugged on the power outputs of the contactor breaker and connected by control links to the latter on the other hand, characterized by the fact that it includes a control connection block (R) provided with control connectors (G) which connect to control outputs (A1, A2, 21, 22, 14, 13) of the contactor breaker onto which a control terminal (Ba) may be connected alternatively and with control connectors (J) which connect to control outputs (S1, S2, S3, 82, 84, 81) of the auxiliary module (MS) onto which a control terminal (Bs) may be connected alternatively, with electrical links connecting said control connectors (G, J).

Abstract: The present invention relates to a set of electrical units for controlling power units, comprising a contactor breaker (CD) with a plurality of current-breaking poles actuated by a solenoid (E) and by a control and slipping mechanism (D, S) on the one hand, and by an auxiliary module (MS) plugged on the power outputs of the contactor breaker and connected by control links to the latter on the other hand, characterized by the fact that it includes a control connection block (R) provided with control connectors (G) which connect to control outputs (A1, A2, 21, 22, 14, 13) of the contactor breaker onto which a control terminal (Ba) may be connected alternatively and with control connectors (J) which connect to control outputs (S1, S2, S3, 82, 84, 81) of the auxiliary module (MS) onto which a control terminal (Bs) may be connected alternatively, with electrical links connecting said control connectors (G, J).

Abstract: A circuit breaker cover is provided with a spring loaded pushbutton assembly that is self-captivated within the cover, thereby enabling the assembly and operation of the pushbutton unit without the need for additional hardware or fixation devices. The pushbutton unit is pivotally arranged within the cover and spring biased against a stop surface in the cover. A top-down assembled, self-captivated pushbutton unit provides for improved manufacturability of the host device, which may be but is not limited to a standard circuit breaker, a rotary circuit breaker, a switch, or a disconnect device. Host devices utilizing such pushbutton units are employed in residential, commercial, industrial or utility applications, and may be employed in single device enclosures or in electrical distribution panels.

Abstract: A electrical conductor relay. The relay has a unitary, non-conducting, chassis/bobbin assembly with a base portion, a bobbin portion, and an upper portion with a window and a plunger slide passage. An electromagnetic coil is located around the bobbin portion and a magnetic metal core passes through the bobbin and extends partially into the window. First and second electrodes are attached to the chassis/bobbin assembly. The first electrode has a first electrode contact, and the second electrode has a top end. A plunger slide member is positioned within the plunger slide passage and has a magnetic metal plunger plate affixed to its bottom. The magnetic metal plunger plate is movably located in the window and is spaced above the magnetic metal core extending up into window. An armature with a fulcrum end and a rearwardly extending spring attachment end and a front end with an armature contact is provided. The armature pivotally engaged with the plunger slide member.

Abstract: An electrical service switching device includes a contact point, a moveable contact piece, an auxiliary switch associated with the contact point and having a coupling element and an auxiliary switch contact point coupled to the moveable contact piece, the coupling element actuating the auxiliary switch contact point, and a T-shaped housing. The housing has a transverse web with two trailing narrow-side walls and a fastening surface perpendicular to the two trailing narrow-side walls, a longitudinal web with a leading front surface parallel to the fastening surface, leading narrow-side walls on both sides of the leading front surface, the leading narrow-side walls perpendicular to the leading front surface, and two trailing front surfaces parallel to the fastening surface. At least one of the two trailing front surfaces connects the transverse web and the longitudinal web. The auxiliary switch is releasably attachable to the housing.

Abstract: An electromagnetic contactor that provides accurate contactor status indication regardless of the contact position. The primary contacts are secured within reversible contact modules. A contact carrier first end provides accurate local contact position indication. Auxiliary contacts toggled by the operator provide accurate control system status indication. The operator includes a stem with two sets of abutments that cooperatively engage the contact carrier. A catch located at the contact carrier second end and an abutment lip attach if the moveable contacts are welded shut. The operator status is prevented from changing thus insuring the accuracy of the contact position feedback. The contact modules can be installed in the electromagnetic contactor without the use of tools.