Abstract: A forcibly guided relay is disclosed, with a housing, whose height is smaller than its width and whose width is smaller than its length. With this, the relay comprises an electromagnetic drive filling the length or the width of the relay, with a clapper-type contactor which comprises a drive arm which extends in the direction of the core and at its free end cooperates with a drive cam; several contact pairs, which are in each case formed by a contact spring and a fixed or spring-like counter-contact said contact springs extending in the direction of the core, and with the drive ends being in a forcibly guided engagement with the drive cam.

Abstract: A circuit breaker assembly is disclosed. The assembly includes a base having an interior bottom surface that includes a first engagement feature and a circuit breaker cassette having an exterior bottom surface that includes a second engagement feature. The cassette is oriented in the base to provide for a current path through the base in a first direction. The first engagement feature engages with the second engagement feature and restrains movement of the cassette relative to the base in a second direction that is perpendicular to the first direction and parallel to the interior bottom surface.

Abstract: An electrical switching device having at least one pole includes a housing of an insulating material, and an incoming terminal contact and an outgoing terminal contact associated with a first pole. Each of the terminal contacts includes a first connection device for connection of a first external electrical conductor. At least one of the terminal contacts includes a second connection device for pluggable connection of a second electrical conductor.

Abstract: An accessory tray is provided for an electrical switching apparatus, such as a circuit breaker, including a housing, an operating mechanism, and a number of accessories. The housing has a cavity with a first end and the second end, and is disposed beneath the operating mechanism. The accessory tray includes an elongated member including first and second ends and is structured to receive the circuit breaker accessories. A guide mechanism guides the elongated member into and out of the cavity, in order to install the circuit breaker accessories beneath the operating mechanism. When the elongated member is disposed within the cavity, the first end is disposed at or about the cavity first end and the second end is disposed at or about the cavity second end. The accessory tray may be a single-piece molded member having a plurality of mounting portions for removably securing a plurality of circuit breaker accessories.

Abstract: An electromagnetic relay has a movable iron core, an insulation holder integrated with an upper end portion of the movable iron core, a movable contact piece supported by the insulation holder, and a solenoid formed from a wound coil. The movable iron core is housed in an axial hole in the solenoid movably in the upward and downward directions. The movable iron core is adapted to be moved upwardly and downwardly based on magnetization and demagnetization of the solenoid for contacting and separating a movable contact point provided on the movable contact piece with and from a fixed contact point for opening and closing a contact point. A permanent magnet is embedded in a base portion of the insulation holder.

Abstract: An electromechanical switching device, a switching device arrangement and an electric connection module are disclosed. In order to make it easier to connect an electromechanical switching device, a switching device is provided with a base body, and with a connection module that can be connected to the base body and has at least one connection terminal for a main current path of the switching device. In at least one embodiment of the present invention, a modular construction is used instead of the integrated design used in previous switching devices. For that purpose, a number of connection terminals are combined into one or more connection modules for each switching device, and the connection modules can be mounted individually and independently from the base body of the switching device. This makes it possible to pre-wire the connection terminals without the actual switching device. Only afterwards does the base body of the switching device need to be mounted.

Abstract: electromagnetic contactor comprising a winding (6) for generating a magnetic field, a magnetic circuit comprising a stationary portion (7) and a mobile portion (8), and an electronic board (11) comprising means of controlling the power supply to the winding (6), the electronic board (11) being arranged horizontally above the stationary portion (7) of the magnetic circuit. The mobile portion (8) passes through the electronic board (11) via an opening (12) in the board and slides into the winding, the contactor comprising an insulating casing including a rear portion intended to be fastened onto a support.

Abstract: The invention relates to a power breaker for switching electrical loads having a parallelepipedal shape having four longitudinal sides lying in the longitudinal direction (LQ) of the parallelepiped, a first transverse side and an opposing second transverse side, an electromagnetic coil having a longitudinal axis (LS), an input connection, an output connection, and a moving contact path that is electrically connected to the input connection or the output connection. The invention also relates to power supply assembly arrangement for switching an electrical current between an external power supply line and at least one load where the moving contact path and the coil are arranged longitudinally parallel to one another in the longitudinal direction (LQ) of the parallelepipedal shape.

Abstract: Certain exemplary embodiments can provide a system, which can comprise a lug coupler that comprises a set of bus bars. Each of the set of bus bars can be adapted to be releasably attached to a corresponding terminal of a set of terminals of a circuit breaker. The system can comprise a set of studs adapted to engage a corresponding set of apertures defined by an end connector of one of a set of electrical leads adapted to be electrically coupled to the lug coupler.

Abstract: A ground fault circuit interrupter device is described.

Abstract: A magnet switch which may be employed in automotive engine starters is provided. The magnet switch includes a metallic terminal which extends through a hole formed in a switch cover to have one of ends thereof protruding outside the cover. The other end of the terminal is connected to an exciting coil to energize it to establish an electric connection between contacts. The magnet switch also includes a cylindrical seal and a stopper. The seal is fit on the end of the terminal to hermetically seal a clearance between the hole and the terminal. The stopper provided on the terminal works to stop the seal from moving to the other end of the terminal, thereby ensuring the stability of installation and sealing performance of the seal in the magnet switch.

Abstract: A terminal shield is provided for an electrical switching apparatus including a case having a first housing member, a second housing member coupled to and disposed opposite from the first housing member, a first end, a second end, a number of terminals, and a number of terminal openings. Each of the first and second housing members has a first side and a second side. The terminal shield includes at least one pair of protrusions extending outwardly from the case on opposing sides of a corresponding one of the terminal openings. Each protrusion has an interior surface facing a corresponding one of the terminals, and an exterior surface disposed opposite the interior surface. The exterior surface of each protrusion aligns with the first side of a corresponding one of the first and second housing members.

Abstract: A switching apparatus is disclosed. The apparatus comprises an electrical contactor including a set of main terminals per phase and an auxiliary switch including a set of auxiliary terminals per phase. Each set of the auxiliary terminals is electrically connected to a respective set of the main terminals via a resistance wire, such that each set of the auxiliary terminals is electrically connected in parallel with each respective set of the main terminals. Each resistance wire includes a first terminal at a first end configured to connect to one of the set of auxiliary terminals, and a second terminal at a second end configured to connect to a respective one of the set of main terminals. The second terminal of the resistance wire comprises a retention hook configured to hook onto the respective main terminal.

Abstract: A multistage switch includes a switch push button. A magnet is disposed in a recess of the inner wall surface of the switch push button. The multistage switch further includes a magnetic sensor, and the magnetic sensor includes a substrate. Two magnetoelectric transducers are mounted on a surface of the substrate, and are disposed so as to face the magnet.

Abstract: A ground fault circuit interrupter device is described.

Abstract: An electromagnetic relay is provided which enables a coating process with a coating agent even after being mounted on a printed circuit board having undergone reflow heating by preventing invasion of water while maintaining air permeability. A main body making up the electromagnetic relay includes an electrical contact portion, electromagnetic driving portion and molded resin base and is covered with the molded resin cover. One or more through holes are formed by applying laser beam from a rear side of the molded resin cover. A spot diameter of each through hole on a surface of an outside of the molded resin cover is 0.1 ?m to 10 ?m. Instead of the molded resin cover, through-holes each having a size of 0.1 ?m to 10 ?m may be formed by applying the laser beam to the molded resin base.

Abstract: An electromagnetic switch is described as including a starter relay, in particular, for an electrical starter motor for controlling a starter pinion when starting an internal combustion engine, having a housing, an armature electromagnetically controllable therein, for controlling a control lever, and having a flexible protective cap which seals a transition from the housing to the armature, the protective cap being developed to be pot-shaped and having a pot floor and a pot opening, the pot floor having a circular opening having a thickened ring for the form-locking connection to the armature, and the pot opening being developed reinforced at its circumferential edge for the form-locking connection to the housing, the pot floor having a setpoint bending region, as seen in cross section. In order to create a small installation space, the protective cap has an arrangement or structure, on its inner wall, for connecting to the housing, which are able to be connected to the housing in a form-locking manner.

Abstract: A circuit breaker includes a main case containing a contactor section, an arc-extinguishing device and an overcurrent tripping device; a middle cover laid on the main case, the middle cover having in a central section thereof a recess partitioned with a bottom wall for containing a switching mechanism and at least one interior attachment; and a top cover covering the top side of the recess in the middle cover. The main case, the middle cover and the top cover are arranged to be dividable from one another. The middle cover has an auxiliary cover, covering the switching mechanism, and the auxiliary cover has the top cover mounted thereon.

Abstract: A circuit breaker includes a housing, separable contacts, an operating mechanism structured to open and close the separable contacts, a power conductor including a first conductor and a second reverse loop conductor, the second reverse loop conductor carrying one of the separable contacts, and a slot motor. The slot motor includes a first slot motor portion, and a second slot motor portion including a plurality of generally U-shaped slot motor laminations, a first insulative housing portion, and a second insulative housing portion. The first and second insulative housing portions interlock with one another to form a generally U-shaped insulative slot motor housing. The first and second insulative housing portions cooperatively receive the generally U-shaped slot motor laminations.

Abstract: In a terminal of a standard, plug-in or box type molded case circuit breaker, a terminal module assembly for a molded case circuit breaker capable of being removable by easily selecting the terminal type, and a molded case circuit breaker having the terminal module assembly, the terminal module assembly comprising a plurality of terminals provided to selectively have a standard, plug-in or box type and electrically connected to fixed contactors, a plurality of terminal bases provided as many as the number of the terminals and selectively having the standard, plug-in or box type, thus to fixedly support each of the terminals, wherein each terminal is assembled to each terminal base to obtain a terminal module intermediate assembly, and a common supporting base for supporting all of the plurality of intermediate assemblies regardless of the terminal type or terminal base type, wherein the terminal module assemblies having the construction can be attached/detached to/from the molded case circuit breaker.

Abstract: A circuit breaker is provided having three horizontal circuit breakers coupled together with a base housing. Each of the horizontal circuit breakers comprising a tank secured in the housing, first and second current transformers extending from the tank and exit and entrance insulators extending from the first and second current transformers. The housing is mountable on a support frame. To facilitate shipping and field assembly, the circuit breaker includes an control panel moveably coupled to the housing.

Abstract: A mountable circuit breaker is disclosed. The circuit breaker includes a housing having first and second housing members and a latch member. The housing defines a rail receptacle for mounting the circuit breaker on an elongated channel rail. The latch member includes a base portion that includes a movably positionable retainer that moves toward or away from a biased position that is established by a stem portion of the latch member. Movement away from the biased position expands the rail receptacle for mounting the circuit breaker to the rail channel when an external force is applied to a tool receptacle adjacent the junction of the base and stem portions of the latch member. Removing the external force results in the base portion returning to its biased position, securing the circuit breaker to the channel rail.

Abstract: A housing cover for a solenoid housing operable for accommodating solenoids for switching hydraulic directional valves is disclosed. A housing cover box has a plurality of side walls, a top side, and an open bottom side, with first and second actuating guides for guiding first and second solenoid control push rods being located on the top side. A plug connector is located between the actuating guides. At least one screw clearance hole is located at each corner of the housing cover box for locating a screw for joining the housing cover box to the solenoid housing. A sealing plate is located between the housing cover box and the solenoid housing, and at least one mounting foot is located at a corner and on a bottom surface of the housing cover box. A tubular spigot is aligned with and extends each screw clearance hole.

Abstract: A circuit breaker is comprised of a make-and-break mechanism part disposed between frame plates opposite to each other; a base in which a breaking portion including cross bar, moving contact, fixed contact and arc-extinguishing device, and an over-current trip device are contained; a middle base, in which a partition wall separating the breaking portion from the make-and-break mechanism part, and the breaking portion from the over-current trip device, is provided; and a cover for covering the base and middle base. A frame of the make-and-break mechanism part is secured to the base through the middle base, and the secured part of the frame and the inner bottom face of the base are disposed in the proximity.

Abstract: A contactor includes a housing lower section housing a solenoid mechanism, a main contact and a housing upper section, for housing main terminals and a connector module including control terminals which may be connected to the solenoid coil of the solenoid mechanism. The housing upper section includes a recessed step to the front of a housing side, in which the connector module may be fixed. The control terminals are located facing the housing front in front of the plane of the main terminals. Connector lines extending into the main housing from the connector module connect the control terminals to the control pins, connected to the solenoid coil and located in the housing lower section.

Abstract: A circuit breaker assembly is disclosed. The assembly includes a base having an interior bottom surface that includes a first engagement feature and a circuit breaker cassette having an exterior bottom surface that includes a second engagement feature. The cassette is oriented in the base to provide for a current path through the base in a first direction. The first engagement feature engages with the second engagement feature and restrains movement of the cassette relative to the base in a second direction that is perpendicular to the first direction and parallel to the interior bottom surface.

Abstract: Electromagnetic actuators, components of electromagnetic actuators, clutches that use electromagnetic actuators, and methods associated therewith for improved electromagnetic actuator operation and manufacturing methods. Embodiments of an electromagnetic actuator of the present disclosure includes a configuration of a housing and a flux washer relative a shaft helps to reduce the travel path for magnetic flux generated by an electrical coil contained therein. This more direct flux path, in turn, provides for a shorter loop for the magnetic flux, which helps to generate a greater relative magnetic force (e.g., a stronger clutch actuation force) as compared to other configurations.

Abstract: A combination of at least two electromagnetic switching devices, each of which is provided with a plug-in connector socket and can be fixed side by side on a support in a stationary position in relation to one another and can be connected to form electrical contact by means of a connection unit. The connection unit includes an electrical conductor connection and a plug-in connector system. The conductor connection is encased by a housing of the connection unit and the plug-in connector system is encased by the lateral faces of the connection unit that face the switching devices. The plug-in connector system is configured to be displaced on the lateral face of the connection unit towards the lateral face of the neighbouring device in the connection unit housing.

Abstract: An electromagnetically actuated adjusting apparatus for lens is disclosed. The adjusting apparatus comprises a body capable of furnishing a lens inside, at least one permanent magnet, a first magnetic conductor and a second magnetic conductor. The first and the second magnetic conductors are respectively wound with a plurality of coils. The permanent magnet is adjoined to the body and has a first polarity and a second polarity opposing each other. The first magnetic conductor has at least a first extension member provided opposite to the first polarity. The second magnetic conductor has at least a second extension member provided opposite to the second polarity. The first extension member and the second extension member can better converge magnetic flux lines emanating from the coils when charged to the positions nearing the two polarities of the permanent magnet so high-efficiency focusing and zooming of lens can be achieved.

Abstract: A modular terminal for a molded case circuit breaker by which various types of terminals can be joined together and configuration and assembly are simplified, the modular terminal comprising a plurality of terminal bases each of which is provided for each phase, a terminal which is detachably supported at each terminal base, and a joint piece which connects a pair of the terminal bases adjacent to each other to form a terminal module.

Abstract: An electrical switching apparatus accessory sub-assembly is for an electromagnetic coil including a movable stem. The electrical switching apparatus accessory sub-assembly includes a coil frame having a first end and an opposite second end. A housing includes a plurality of interior surfaces, a first end and an opposite second end. The second end of the housing has an opening structured to receive the movable stem of the electromagnetic coil. A number of the interior surfaces of the housing are structured to selectively hold the coil frame in either one of a first position in which the coil frame first end faces the housing first end and the coil frame second end faces the housing second end, and a second position in which the coil frame first end faces the housing second end and the coil frame second end faces the housing first end.

Abstract: An electromagnetic switching device for controlling a branch includes, in at least one embodiment, a housing with a length in a longitudinal direction, with a first end side, which is oriented at right angles with respect to the longitudinal direction, and with a second end side, which is opposite the first end side and is oriented at right angles with respect to the longitudinal direction; a control coil, which is arranged in the housing, for actuating an electrical switch with a first and second coil contact; and a first and second connection element, which are arranged partially in the housing.

Abstract: In a case for a circuit breaker in which a terminal is simply replaceable or mountable according to a wiring method of the circuit breaker, the case comprises a case which accommodates components for breaking a circuit, a terminal block portion which provides a common platform for plural types of terminals, and a door engaged with the case in monolithic form so that it may be operable to a closed position for closing the case or an opened position for installing a selected terminal of the plural types of terminals.

Abstract: Noise generated by driving a relay provided on a battery pack is suppressed. A negative relay is fixed onto top of a bottom face and an inner side surface of a lower case of the battery pack via multiple mounting points formed on an L-shaped fixture. The center of gravity of the negative relay is located within a polygon having the mounting points as vertices.

Abstract: A circuit breaker includes a housing, separable contacts, an operating mechanism structured to open and close the separable contacts, a power conductor including a first conductor and a second reverse loop conductor, the second reverse loop conductor carrying one of the separable contacts, and a slot motor. The slot motor includes a first slot motor portion, and a second slot motor portion including a plurality of generally U-shaped slot motor laminations, a first insulative housing portion, and a second insulative housing portion. The first and second insulative housing portions interlock with one another to form a generally U-shaped insulative slot motor housing. The first and second insulative housing portions cooperatively receive the generally U-shaped slot motor laminations.

Abstract: A combination of an electromagnetic switching device and a printed circuit board incoming and outgoing connecting conductors associated with switchable conducting paths in the switching device. The connecting conductors are each associated with a connecting terminal for connecting an external electrical conductor. Pin contacts are connected to the printed circuit board for establishing a connection to the switching device. Each of the connecting conductors includes a contact receptacle accessible from the front of the switchgear housing for providing a contact connection to one of the pin contacts.

Abstract: The disclosure relates to an electrical installation device, e.g., a circuit-breaker, motor protecting switch, and similar, comprising a housing that is formed from shell-type housing parts, an electromagnetic trigger, a thermal trigger, a breaker mechanism with a latching point, a slide which transmits the movements of the thermal trigger and the magnetic trigger to the breaker mechanism in order to unlatch the same, and a striker that is connected to the armature of the electromagnetic trigger and acts upon a movable contact piece of a contact point in case of a short-circuit so as to open the contact point. The shell-type housing parts, the slide, and the striker are made of plastic. At least the slide is formed from radiation-crosslinked thermoplastic to which an additive has been added as a crosslinking promoter before the radiation process.

Abstract: An electromagnetic relay is provided which enables a coating process with a coating agent even after being mounted on a printed circuit board having undergone reflow heating by preventing invasion of water while maintaining air permeability. A main body making up the electromagnetic relay includes an electrical contact portion, electromagnetic driving portion and molded resin base and is covered with the molded resin cover. One or more through holes are formed by applying laser beam from a rear side of the molded resin cover. A spot diameter of each through hole on a surface of an outside of the molded resin cover is 0.1 ?m to 10 ?m. Instead of the molded resin cover, through-holes each having a size of 0.1 ?m to 10 ?m may be formed by applying the laser beam to the molded resin base.

Abstract: A contactor includes a housing lower section housing a solenoid mechanism, a main contact and a housing upper section, for housing main terminals and a connector module including control terminals which may be connected to the solenoid coil of the solenoid mechanism. The housing upper section includes a recessed step to the front of a housing side, in which the connector module may be fixed. The control terminals are located facing the housing front in front of the plane of the main terminals. Connector lines extending into the main housing from the connector module connect the control terminals to the control pins, connected to the solenoid coil and located in the housing lower section.

Abstract: An electrical switching apparatus includes a circuit breaker device having a molded housing with line and load ends, plural terminals disposed from the housing, and first and second handle devices. The terminals electrically and mechanically engage a circuit breaker mounting block. The first and second handle devices engage the housing at or about the respective line and load ends. The handle devices remove the circuit breaker device from the mounting block. Each of the handle devices includes an insulative barrier having a first portion, a second portion and a third portion. The first portion at least partially covers a corresponding one of the housing ends. The second portion is coupled to the housing at or about the corresponding one of the housing ends. The third portion is structured to be manually grasped in order to pull the insulative barrier together with the circuit breaker device away from the mounting block.

Abstract: In a terminal of a standard, plug-in or box type molded case circuit breaker, a terminal module assembly for a molded case circuit breaker capable of being removable by easily selecting the terminal type, and a molded case circuit breaker having the terminal module assembly, the terminal module assembly comprising a plurality of terminals provided to selectively have a standard, plug-in or box type and electrically connected to fixed contactors, a plurality of terminal bases provided as many as the number of the terminals and selectively having the standard, plug-in or box type, thus to fixedly support each of the terminals, wherein each terminal is assembled to each terminal base to obtain a terminal module intermediate assembly, and a common supporting base for supporting all of the plurality of intermediate assemblies regardless of the terminal type or terminal base type, wherein the terminal module assemblies having the construction can be attached/detached to/from the molded case circuit breaker.

Abstract: A magnet switch which may be employed in automotive engine starters is provided. The magnet switch includes a metallic terminal which extends through a hole formed in a switch cover to have one of ends thereof protruding outside the cover. The other end of the terminal is connected to an exciting coil to energize it to establish an electric connection between contacts. The magnet switch also includes a cylindrical seal and a stopper. The seal is fit on the end of the terminal to hermetically seal a clearance between the hole and the terminal. The stopper provided on the terminal works to stop the seal from moving to the other end of the terminal, thereby ensuring the stability of installation and sealing performance of the seal in the magnet switch.

Abstract: The electromagnetic switch for use in a starter includes a B-terminal bolt fixed to a mold cover thereof so as to protrude outside from the mold cover, a first bush fitted to the B-terminal bolt and detachably fixed to the mold cover, and a terminal electrically connected to the B-terminal bolt and led out in a direction perpendicular to a longitudinal direction of the B-terminal bolt. The B-terminal bolt is applied with a current from an external battery through the terminal. The first bush is positioned with respect to the mold cover in a circumferential direction of the B-terminal bolt. A lead-out angle of the terminal is selectable from among a plurality of predetermined angular positions, and the terminal is held in a second bush detachably fitted to an outer periphery of the first bush so as to be locked immovable with respect to the first bush.

Abstract: The electromagnetic switch for use in a starter includes a solenoid including an excitation coil and a plunger, and an energization terminal through which a current is supplied to the excitation coil from an external battery. The excitation coil generating, when applied with the current, a magnetic attraction force to move the plunger in order to close a main contact of the starter to thereby energize a motor of the starter. The energization terminal is constituted by a male terminal having a plate-like shape and insert-molded in the mold cover, and a female terminal fixed to a coil bobbin of the excitation coil and connected with a lead wire of the excitation coil, the female terminal being provided with a fitting section to which the male terminal is fitted so that the male and female terminals are electrically connected to each other.

Abstract: The metal housing of the case of a contactor includes an annular rib extending continuously opposite the cylindrical periphery of the main stationary core, the rib having an internal diameter respectively greater than that of the ferrule and smaller than that of the housing, so as to ensure the locking of the different parts of the case and the crimping of the housing on the stationary magnet following local deformations exerted on the reduced diameter of the swaged part defining the rib.

Abstract: A shield is provided for a circuit breaker including a printed circuit board (PCB). The PCB is a generally planar member with a plurality of electrical components each having a corresponding shape. The shield includes at least one resilient sheet member at least partially covering the generally planar member and at least one of the electrical components coupled thereto. The resilient sheet member generally conforms to the corresponding shape of the at least one of the electrical components in order to shield and protect it from debris and to resist accumulation of gas-carried carbon. The resilient sheet member is made from a material, such as silicon rubber, which is flexible and elastic within a temperature range of about ?70 to about 450 degrees Fahrenheit, and it is flame-resistant, tear and abrasion-resistant, impervious to moisture and chemicals, fungus-resistant, and resistant to outgassing.

Abstract: A circuit breaker includes separable contacts, an operating mechanism structured to open and close the separable contacts, a molded enclosure comprising a first molded portion and a second molded portion, a plurality of thread cutting screws fastening the first molded portion to the second molded portion, and a plurality of machine screws. The first molded portion and the second molded portion cooperate to form a plurality of exterior walls. The exterior walls define an interior volume, which encloses the separable contacts and at least a portion of the operating mechanism. The machine screws extend within and reinforce the exterior walls and restrict expansion of the exterior walls away from the interior volume.

Abstract: A gas diverter is disclosed that slows, cools, and directs the hot gas and plasma generated during the operation of an electrical switching device. The gas diverter mounts to the switching device and has an inlet for accepting the gas and exit for expelling the gas. The diverter has peripheral walls and internal partitions that divide the gas and provide for two independent circuitous flow paths. In multi-phase switching devices, a plurality of gas diverters may be used to further separate the gases generated in each respective phase. The gas diverter is made of a high temperature, arc resistant plastic which is molded to form a two piece structure. The gas diverter is mounted to the device via a slide in place flange-channel mechanism.

Abstract: A circuit breaker includes fixed and movable contacts, an operating mechanism including a movable arm carrying the movable contact, an arc chute including a plurality of spaced apart first and second arc plates, and a slot motor. A slot motor structure is disposed about the contacts and a portion of the movable arm. An insulative housing at least substantially covers and insulates the slot motor structure from the movable arm and contacts. The insulative housing includes a base and a pair of arms disposed therefrom. Each of the arms includes a first portion disposed proximate the first arc plates and a second smaller portion disposed proximate the second arc plates. A space extending from the first portion, not occupied by the second portion, is generally occupied by a portion of the second arc plates. The second portion forms a debris shield between the second arc plates and the operating mechanism.

Abstract: Noise generated by driving a relay provided on a battery pack is suppressed. A negative relay is fixed onto top of a bottom face and an inner side surface of a lower case of the battery pack via multiple mounting points formed on an L-shaped fixture. The center of gravity of the negative relay is located within a polygon having the mounting points as vertices.