Abstract: A retrofit assembly structured to allow a CM22 type circuit breaker to engage, and be enclosed by, a CMD type circuit breaker tank is provided. The retrofit assembly includes a levering mechanism, a circuit breaker bus assembly having bus support members, and a door handle system structured to allow a user to actuate the circuit breaker contacts when the tank is closed.

Abstract: A non-contact auxiliary switch for a circuit breaker includes a target having first and second positions corresponding to open and closed positions of separable contacts. A non-contact sensor is responsive to the first and second positions of the target to generate first and second output signals. A movable slider member carries the target and is structured to slide within a holder inside the housing of the circuit breaker and to be coupled to and moved by an operating mechanism responsive to the open and closed positions of the separable contacts. This effects one of the first and second positions of the target when the separable contacts are closed and the other of the first and second positions of the target when the separable contacts are open.

Abstract: A locking apparatus is for a circuit breaker including an enclosure having an opening with two sides and two ends, and two apertures on each of the sides proximate the ends. An operating mechanism includes a pivotal operating handle disposed through the opening. The operating handle includes a first position proximate one end of the opening and a second position proximate the other end of the opening. The locking apparatus is disposable proximate one of the ends of the opening. The locking apparatus includes a housing and a spring member interlocked with the housing. The spring member includes a first end and an opposite second end retained by the enclosure at the apertures at one of the ends when the operating handle is in the second position, or retained by the enclosure at the other apertures at the other of the ends when the handle is in the first position.

Abstract: A loadcenter supplies power to a non-critical load, a critical load and an ultra-critical load, and is capable of isolating a first distribution panel distributing power to the non-critical load from a second distribution panel distributing power to the critical load to enable the isolated distribution panels to be supplied with power from separate generator power sources in response to power supplied by a utility power source to both distribution panels becoming unacceptable. A third distribution panel distributes power to the ultra-critical load and is selectively supplied with alternating current (AC) power from either the second distribution panel, when the second distribution panel has AC power, or from AC power generated from direct current (DC) power stored in a battery when the second distribution panel lacks AC power.

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: An interlock assembly for a safety switch includes a linkage. A first end of the linkage is coupled to the operating handle of the safety switch in order that moving the operating handle results in a corresponding movement of the second end of the linkage into and out of an aperture in a bracket member. The bracket member is movably coupled to the safety switch enclosure by a fastening mechanism. When the cover of the safety switch is disposed in its open position, the bracket member is disposed in a first position preventing the second end of the linkage from entering the aperture and resisting undesired movement of the operating handle. When the cover is closed position, the bracket member is moved to a second position corresponding to the second end of the linkage being receivable by the aperture in order that the operating handle is movable.

Abstract: A socket assembly for a meter center including a plurality of meters is provided having a plate member and plural jaw assemblies. The plate member includes apertures for housing the jaw assemblies and structures associated with each of the apertures which function to both assist in initial alignment of the jaw assemblies during installation as well as to provide lateral support to, and maintain alignment of, the jaw assemblies after installation. The plate member further includes protrusions extending inwardly from the side walls of the apertures. The protrusions engage openings in side portions of the jaw assemblies.

Abstract: A door hinge assembly is provided for an enclosure including a housing having a panel member, and a plurality of sides extending outwardly from the panel member to define an interior and an opening for providing access to the interior. The door hinge assembly includes a generally planar portion covering the opening of the housing of the enclosure, at least one side flange portion extending outwardly from the generally planar portion toward the housing of the enclosure and including a number of bends forming at least one first hinge element, and at least one second hinge element disposed at or about one of the sides of the housing to pivotably receive a corresponding first hinge element. The side flange portion, including the first hinge element thereof, is a single continuous piece of material. The door hinge assembly is movable between an open position and a closed position.

Abstract: A modular bus assembly for a loadcenter is provided. The loadcenter includes a non-conductive bus support assembly having a planar member with an upper side, a plurality of upper sidewalls, and at least one opening through the planar member. The plurality of upper sidewalls defining at least one upper channel. At least one lateral bus member having an elongated body with a first end terminal, a first lateral portion, an offset, central portion, an offset second lateral portion, and a second end terminal is disposed with the channel. The first end terminal, the first lateral portion, and the second end terminal are in, generally, a first plane. The offset, central portion is offset in a first direction from the first plane and the offset, second lateral portion is offset in a second direction from the first plane. In this configuration the lateral bus member is reversible so that either the offset central portion or the offset, second lateral portion is disposed within the planar member opening.

Abstract: A receptacle includes a line conductor, a load conductor, a neutral conductor, a load neutral conductor, a ground conductor, first separable contacts electrically connected between the line and load conductors, and second separable contacts electrically connected between the neutral and load neutral conductors. An operating mechanism is structured to open and close the first and second separable contacts. A number of voltages are input from at least some of the conductors. An electronic trip mechanism automatically detects: (a) an arc fault trip condition, and (b) a second different miswiring condition from the voltages and cooperates with the operating mechanism to trip open the separable contacts in response to the automatically detected miswiring condition.

Abstract: An interlock assembly is provided for a circuit breaker charging assembly. The charging assembly includes a cam shaft, a latch mechanism, such as a D-shaft, a latch assembly, and a charging handle. The charging handle pivots the cam shaft. The D-shaft is pivotable between first and second positions corresponding to the D-shaft latching and unlatching the latch assembly, respectively. The interlock assembly includes a lever coupled to and pivotable with the D-shaft, and a latch interlock pivotably coupled to the circuit breaker housing. The latch interlock moves between locked and unlocked positions corresponding respectively to the first end of the latch interlock moving the lever to position the D-shaft in the second position and the first position. Unless and until the stored energy mechanism is substantially fully charged, the latch interlock is disposed in the locked position and the latch assembly is movable with respect to the D-shaft.

Abstract: A trip lever for a shared tripping device, wherein the shared tripping device is structured to operatively couple at least two circuit breakers, a primary circuit breaker and a secondary circuit breaker, the trip lever having an elongated trip lever body with a mounting end and a distal end. The trip lever body mounting end pivotally is coupled to a cage in the primary circuit breaker and engages a trip bar in the secondary circuit breaker. The trip lever body distal end is disposed in a path of travel of an inter-phase link body distal end within the primary circuit breaker. The trip lever body distal end is structured to be engaged by the inter-phase link body distal end as the inter-phase link body distal end moves along the path of travel and the trip lever is structured to actutate the secondary circuit breaker trip bar when the trip lever is engaged by the inter-phase link body distal end.

Abstract: An over-voltage protection system including a phase bus connected to a phase conductor of an electrical system and one or more transient-suppressing lines connected to the phase bus. Each of the transient-suppressing lines includes a contactor and a transient-suppressing element. The contactor of each transient-suppressing line is selectively opened and closed by a processor, thereby protecting the transient suppressing element from excessive currents.

Abstract: A securing mechanism is provided for an electrical switching apparatus, such as a circuit breaker, which is movable into and out of an installed position within a switchgear enclosure. The securing mechanism includes a mount coupled to the circuit breaker, and a movable assembly movably coupled to the mount and including an engagement member. The movable assembly moves among first and second positions corresponding to the circuit breaker not being fully installed within the switchgear enclosure and being disposed in the installed position, respectively. When the circuit breaker is moved toward the installed position, the engagement member engages the switchgear enclosure and moves the movable assembly toward the second position, in which the engagement member securely engages the switchgear enclosure to resist undesired movement of the circuit breaker with respect to the switchgear enclosure.

Abstract: A tripping device comprises a coil frame, a coil, a plunger, a spring, and an anti-shock device. The coil is fixedly coupled to the coil frame and has a cylindrical channel extending therethrough. The plunger is reciprocatingly received within the cylindrical channel and the spring is structured to bias the plunger within the cylindrical channel. The anti-shock device includes at least one of a number of anti-shock devices structured to eliminate movement of the coil relative to the coil frame and a number of anti-shock devices structured to eliminate movement of the plunger relative to the cylindrical channel. An under-voltage release mechanism comprises a mounting bracket, a tripping device, and an angled support. The mounting bracket includes a first portion and a second portion. The angled support is fixedly coupled to the mounting bracket between the first and second portions and is structured to prevent flexing of the mounting bracket.

Abstract: An adjustable mounting assembly for a power circuit breaker includes a frame having a first sidewall disposed opposite a first side of the housing of the power circuit breaker and a second sidewall disposed opposite the second side of the housing. At least one moveable block is disposed between the first and second sidewalls of the frame and the corresponding first and second sides of the housing. An adjustment mechanism, such as a jackscrew coupled to the moveable block, adjusts in order to move the block into engagement with the corresponding sides of the housing. A fastening mechanism, such as a lock screw, secures the moveable block and the frame with respect to the housing. The adjustable mounting assembly securely mounts the frame and the power circuit breaker within a switchgear enclosure in order to resist damage potentially caused by an impact force sustained thereby.

Abstract: A receptacle includes separable contacts, an operating mechanism structured to open and close the separable contacts, and two trip circuits. A first microprocessor-based trip circuit includes a first output having a first arc fault/ground fault trip signal, and a second output having a periodic pulsed signal. A second failsafe trip circuit includes an input having the periodic pulsed signal and an output having a second trip signal. The second failsafe trip circuit is structured to output the second trip signal responsive to failure of the first microprocessor-based trip circuit to provide the periodic pulsed signal. A third circuit responds to the first trip signal and the second trip signal and cooperates with the operating mechanism to trip open the separable contacts.

Abstract: A maintenance-free electrical bus assembly is provided for a switchgear cabinet. The maintenance-free electrical bus assembly is coupled to a switchgear device in the cabinet, and includes electrical bus members, at least one bus joint comprising an electrical connection of two or more electrical bus members, and a fastener assembly fastening the bus joint and maintaining the electrical connection between the electrical bus members thereof. The fastener assembly includes at least one first fastening element having a plurality of first threads, and at least one second fastening element having a plurality of second threads. The second threads threadably engage the first threads of a corresponding first fastening element, in order to perpetually secure the first threads and the corresponding first fastening element, and to resist undesirable loosening of the bus joint once the fastener assembly has been fastened. Thus, inaccessible bus joints within the cabinet do not need to be inspected.

Abstract: A system and method of indicating power quality in an electric power system that generates an indication of power quality reflective of the worst observed power quality event over both a short and a long interval of time in which each component of the indicator is weighted by a user programmable factor to control its relative influence.

Abstract: A latch engagement control mechanism is provided for a latch assembly of a circuit breaker including a housing, separable contacts, and an operating mechanism having a pole shaft, and at least one link coupled to the pole shaft. The latch assembly includes a pivot member cooperable with such link. The latch engagement control mechanism includes a latch pin having a cut-out portion and pivoting among a first position in which the latch pin prevents the pivot member from pivoting, and a second position in which the cut-out portion provides a clearance for the pivot member to pivot. A latch member coupled to the latch pin at or about the cut-out portion, includes at least a first protrusion engageable by the pivot member to establish the first position of the latch pin.