Abstract: An ERMS system and a method for implementing an ERMS system are disclosed. The ERMS system includes: a self-powered relay comprising a control circuit that controls the self-powered relay to work under one of a first mode and a second mode; a portable power box; and an electrical interface connecting the portable power box to the self-powered relay. Under the second mode, the self-powered relay is configured to reduce energy level in an arc flash event. Upon receiving a signal from the portable power box via the electrical interface, the control circuit controls the self-powered relay to work under the second mode.

Abstract: A modular electrical system with electrical and/or data outlets provides an unobtrusive power and/or data source that can be routed along a floor, a table or other work surface in a work area. The modular system includes a plurality of electrical wiring modules, a plurality of junction modules each having multiple outputs, and a plurality of electrical power or data units connected to the junction modules and to surfaces in the work area. Optionally, a modular floor runner system is assembled together from rigid floor runner modules interposed with junction modules, with one or more flexible branch extensions selectively coupled to any desired junction module. The floor runner modules and junction modules include housings that protect electrical wiring held internally, while being minimally intrusive for use in walking areas. Optionally, a table mounted modular electrical system is connectable to a floor runner system, and vice versa.

Abstract: An electrical junction box includes a first conductive plate, a second conductive plate adjacent to the first conductive plate without contacting the first conductive plate, a switching element including a first terminal connected to the first conductive plate, a second terminal connected to the second conductive plate, and an element body on which the first terminal and the second terminal. A circuit board opposes and is spaced apart from the second conductive plate. A cover has an open side and covers the switching element and the circuit board. The cover includes a partitioning plate that partitions an inside of the cover so as to form a first chamber. The element body of the switching element is arranged in the first chamber, a second chamber is formed inside the cover by the partitioning plate and the second conductive plate, and the circuit board is arranged in the second chamber.

Abstract: A vehicular circuit body includes a trunk line that includes a power source line and a communication line, and that is routed in a vehicle body; and a plurality of control boxes that are disposed in a distribution manner along the trunk line. The trunk line includes a first trunk line portion extending in a front-and-rear direction of the vehicle body and a second trunk line portion extending in a leftward-and-rightward direction of the vehicle body. The plurality of control boxes include a branch control box that connects the first trunk line portion and the second trunk line portion, and distributes power from one of the first trunk line portion and the second trunk line portion to the other one.

Abstract: Embodiments of a framing assembly including modular connectors for interconnecting components of the framing assembly are disclosed.

Abstract: A vehicular circuit body provided in a vehicle includes: a trunk line that extends in at least a front-and-rear direction of the vehicle; and a plurality of control boxes that are provided in the trunk line, wherein each of the plurality of control boxes is able to connect with a branch line that is directly or indirectly connected to an accessory, and the trunk line includes a power source line and a communication line.

Abstract: A framing assembly is disclosed including a first connector and a second connector. The first connector includes a body defining an edge portion. The second connector includes a base and a flange in communication with the base. To interconnect framing components of the framing assembly, the second connector is engaged with the first connector such that an engagement surface of the flange abuts the edge portion of the first connector restricting movement of the second connector relative to the first connector.

Abstract: A ground fault circuit interrupter (GFCI) breaker testing system can include an enclosure having at least one wall that forms a cavity. The system can also include at least one GFCI breaker disposed within the cavity. The system can further include a sensing circuit assembly having at least one switch, where the at least one switch is electrically coupled to the at least one GFCI breaker. The system can also include a user interface assembly disposed, at least in part, outside the cavity, where the user interface assembly is coupled to the sensing circuit assembly, where the user interface assembly instructs the at least one switch to test the at least one GFCI breaker.

Abstract: A circuit breaker assembly including a housing assembly and a tamper detection system. The housing assembly defines a sealed enclosure. The sealed enclosure includes a division interface. The sealed enclosure is structured to be in one of a closed, first configuration, wherein the sealed enclosure defines a generally enclosed space, and an open, second configuration, wherein the sealed enclosure allows access to the enclosed space, and wherein, as the sealed enclosure moves between the first configuration to the second configuration, the sealed enclosure is reconfigured at the division interface. The tamper detection system includes a protective assembly and an indicator assembly. The protective assembly is structured to be coupled to the sealed enclosure at the division interface. The indicator assembly includes a rupturable construct. The rupturable construct is structured to transform from an intact, first configuration to a ruptured, second configuration.

Abstract: An electrical power monitoring system includes a base at an external surface of a wall of a junction box and including a stem configured to project through an opening in the wall, the base further including a monitoring circuit, a plurality of conductors extending through the stem and coupling the monitoring circuit to a plurality of conductive terminals in the junction box, and a fastener configured to mate with the stem of the base at an internal surface of the wall to fix the base to the wall, wherein the monitoring circuit is configured to monitor presence of electrical power at the plurality of conductive terminals, the monitoring circuit including a plurality of light sources at the external surface of the base.

Abstract: Plug-on neutral circuit breakers include an AFCI OR GFCI circuit breaker housing, a neutral conductor with an external end portion extending from the AFCI/GFCI circuit breaker housing, and a clip assembly attached to the neutral conductor at a specific length configured to align with the loadcenter neutral bar location. The clip assembly includes a conductive clip with downwardly extending, spaced apart legs. The legs are sized and configured to clamp against opposing sides of a neutral bar.

Abstract: Electrical power supplying device having a central power-hub assembly supplying AC-type electrical power to power plugs, power adaptors, and/or power adapter blocks located and concealed from view within a 3D interior volume accessible through a central opening disposed about the central power-hub assembly, while the central power-hub assembly supplies AC-type and DC-type electrical power to electrical appliances disposed external to the 3D interior volume.

Abstract: An electrical service equipment provides electrical service to a building or other similar venue. The equipment includes a cabinet with two portions structured to hold a meter pan and a switch, respectively. The switch is preferably an HCP switch. The portion holding the meter pan includes a subassembly including two horizontal plates and a plurality of buses passing through the plate and adapted to provide connection to the current and voltage transformers of the meter pan.

Abstract: A power cord management system for managing flexible electrical power cords associated with hair or bathroom handheld appliances includes a power cord storage body. A pair of spaced apart cord wrapping elements are coupled to the power storage body about which the flexible electrical power cord may be wrapped for storage. At least one of the cord wrapping elements is movable between a storage and release position. The cord wrapping elements are configured to retain the wrapped power cord upon the power cord storage body when the at least one of the cord wrapping elements is in the storage position and wherein the wrapped power cord may be removed from the power cord storage body without unwrapping the wrapped power cord when the at least one of the cord wrapping elements is moved to the release position.

Abstract: A terminal box for electrical connection to an electric motor, in particular to a circulating pump, includes at least one housing part, designed as a cast plastic part, and an operating switch wherein the operating switch is arranged on the housing part, wherein at least one fixed electrical switch contact of the operating switch is embedded in the housing part. The pump aggregate features one such terminal box.

Abstract: A power supply apparatus for a vehicle is provided which supplies electric power to a power supply unit and charges electric power from the power supply unit via a power port. The vehicle includes a plurality of power inverter circuits which are connected to a common storage unit in parallel. The plurality of power inverter circuits include an electric power transferring power inverter circuit connected to the power port via an electric power transferring electric path, and are divided into a first category including the electric power transferring power inverter circuit and a second category. The power supply apparatus includes a connection prohibiting unit which realizes a state in which the power inverter circuit included in the first category is electrically connected to the storage unit, and the power inverter circuit included in the second category is disconnected from the storage unit.

Abstract: In an electrical distribution cabinet a mechanism providing quick, reliable, passive arc blast control has a flue chamber surrounding the likely arc site such as an electrical connection point. The flue chamber provides a flue channel which lengthens the arc and attenuates the current and temperature until the arc is extinguished. Preferably, the flue chamber and channel are formed of opposable open-faced polyhedral structures, one fitting inside the other. The mechanism is particularly suited for draw-out circuit breaker connections in a switch gear cabinet.

Abstract: An actuator system for operating a switch is described herein. The actuator system can include a shaft of a handle assembly. The shaft couples to a handle and a male coupling element and has a number of positions. Further, a coupling body of a switch assembly can be positioned in the number of positions. The coupling body engages the switch and has a female coupling element, which has a slotted portion that receives the male coupling element and an angled terminus that aligns the shaft to a first position as the shaft couples to the coupling body. The slotted portion receives and engages the male coupling element when the shaft is coupled to the coupling body. The slotted portion prevents the male coupling element from disengaging when the coupling body is in a second position, and disengages the male coupling element when the coupling body is in the first position.

Abstract: An electrical panelboard enclosure includes an enclosure housing with an interior equipment chamber accessible by way of a service entrance door. A service panel is configured to receive power from a main power source. A main power breaker has a main power breaker toggle switch and is positionable between a power-on state and a power-off state to selectively activate and deactivate the main power. A power cutoff switch mechanism is operable from outside the service entrance door and is positionable between a power-on state and a power-off state to mechanically engage and deactivate the main power breaker toggle switch and cutoff the main power without opening the service entrance door. A lockout system is operable to prevent the service entrance door from being secured in a closed position unless the main power breaker and the power cutoff switch mechanism are in the same state.

Abstract: A power source circuit shut off apparatus shuts off a circuit of a battery assembly in which plural battery cells connected in series are arranged in parallel. The power source circuit shut off apparatus includes a housing, a pair of bus bars that is arranged in the housing and is connected to the adjacent battery cells respectively, a switch section that is adapted to conduct electrical connection or disconnection between the pair of bus bars, and a retaining member which is formed on the housing and is configured to be retained to a resin frame part of a side surface of the battery cell.

Abstract: A solid insulated switchgear having at least one circuit switches for switching a three-pole AC circuit includes a plurality of bus-bars for pole. Each of the bus-bars for pole being providing correspondingly for each pole comprises a ring-shaped bus-bar portion electrically connecting the arc extinguishing mechanisms for the same pole, and each having an internal electrical conductor portion and an external solid insulated mold portion in which the conductor portion is built; and a plurality of extended connecting portions respectively extended from the ring-shaped bus-bar portion while being space apart from one another in a circumferential direction so that the plurality of circuit switches are connected in the state in which the plurality of circuit switches are separated from one another.

Abstract: A sealed electrical enclosure used in hazardous locations for enclosing electrical components having a bottom housing and a top housing with a serrated joint formed therebetween, the bottom housing adapted to receive one or more electrical components, a first metal bus extending from a point internal to the bottom housing through a first end wall to a point external thereto, and a second metal bus extending from a point internal to the bottom housing through a second end wall to a point external to thereto, where the first and second metal buses are adapted to contact first and second electrical terminals of an electrical component when placed within the bottom housing, wherein the top housing is removably secured to the bottom housing to allow for removal and replacement of an electrical component within the housing.

Abstract: An appliance holder system for electrical handheld appliances of the type having a flexible electrical power cord attached thereto is provided. The appliance holder system includes an appliance holder assembly having at least one receptacle for receiving and storing at least one electrical handheld appliance having a flexible electrical power cord attached thereto. A power cord storage assembly of the system has a pair of spaced apart cord wrapping elements about which the flexible electrical power cord may be wrapped for storage. At least one of the cord wrapping elements is movable between a storage and release position.

Abstract: A circuit protection system has a normal mode, and a maintenance mode with reduced potential arc flash energy. A downstream circuit breaker is mounted within a first enclosure comprising a first access panel. A locking mechanism locks the first access panel closed. An upstream breaker is mounted within a second enclosure comprising a second access panel. A current sensor senses current and is in communication with an electronic trip unit that controls current interruptions by the upstream breaker based on a trip setting. A user interface device is accessible when second enclosure is closed, and allows user selections of normal and maintenance modes. When maintenance mode is selected, the trip unit changes the trip setting such that potential arc flash energy is reduced. The system is configured to keep the first access panel locked closed based on normal mode being selected, and allow unlocking based on maintenance mode being selected.

Abstract: An electrical enclosure includes a housing, a moveable bracket, an electrical device, a lever, and a drive assembly. The housing has a door attached to a body. The moveable bracket couples the electrical device to the body. The lever is positioned outside of the housing and is configured to switch between OFF and ON lever positions. The drive assembly at least partially protrudes through an aperture of the body and is attached to the lever. The drive assembly includes a drive cog that directly moves the handle of the circuit breaker between OFF and ON handle positions when the electrical device is in an operational position and the lever is switched from the OFF to the ON lever position.

Abstract: A power transfer device adapted for interconnection with the electrical system of a building includes a housing that includes a base having a back wall and an intermediate member that engages the base. A first housing section engages the base and the intermediate member and defines a first interior portion. A second housing section engages the base and the intermediate member and cooperates with the base to define a second interior portion. Fasteners secure the intermediate member, the first housing section and the second housing section together. Power transfer switching components are interconnected with and carried by one of the housing sections. A cover may be pivotably mounted to the housing. During assembly, the power switching components are mounted to one of the housing sections to form a subassembly that is connected to the base as a single unit.

Abstract: A system is provided for a power distribution enclosure that includes an electronic circuit component. The system includes a conductive adapter having a head, and a circuit breaker base adapted for mounting to the power distribution enclosure. The circuit breaker base has an aperture adapted to receive the head of the conductive adapter. The head of the conductive adapter has a shape that substantially prevents rotation of the conductive adapter when the conductive adapter is inserted into the aperture. The conductive adapter is configured to draw away or absorb heat from the electronic circuit component and move the absorbed heat out of the power distribution enclosure. The circuit breaker base is adapted to substantially prevent heat from escaping from the conductive adapter into the power distribution enclosure. Numerous other aspects are provided.

Abstract: A modular form factor power module system with monitoring and control functions is disclosed. The power module system is configured to power, monitor and/or control telecommunications equipment at the circuit level.

Abstract: A connection apparatus includes a housing portion comprising a back panel and side panels, the back panel and side panels partially defining a cavity having an access orifice, the side panels partially defining an entry area to the access orifice, a fuse holder assembly disposed in the cavity, and a cover disposed in the cavity between a portion of the fuse holder assembly and the entry area to the access orifice, the cover obscures a portion of the fuse holder assembly.

Abstract: A high-voltage apparatus includes a battery device, a high-voltage control device, a housing, and a cooling structure. The cooling structure includes a first cooling channel to cool the battery device, a second cooling channel to cool the high-voltage control device, a connection channel connecting the first cooling channel to the second cooling channel, and a ventilator. The connection channel has a first opening portion connected to the first cooling channel, a second opening portion connected to the second cooling channel, and an inner flow path to communicate the first opening portion to the second opening portion. A sectional area of the first opening portion and a sectional area of the second opening portion are each set to be smaller than a sectional area of the inner flow path.

Abstract: A sealed plug-in circuit breaker panel has an enclosure defining a sealed interior portion. The enclosure includes a housing, a face plate removably coupled to the housing and a front seal member disposed between the face plate and the housing such that the face plate and the housing are sealingly engaged. The panel further includes an electrical bus structure coupled to the housing, a plurality of first plug-in members coupled to the bus structure and a number of circuit breakers disposed in the enclosure. Each circuit breaker includes a manual operator and at least a pair of second plug-in members which are electrically coupled to corresponding first plug-in members. The manual operator protrudes through and extends from a respective aperture formed in the face plate. The panel further includes a number of feeders and load connectors electrically coupled to the bus structure.

Abstract: A loadcenter is equipped with a unitary neutral bus bar capable of receiving AFI and GFI circuit breakers having either a plug-on-neutral connection or a wire-neutral connection. The neutral bus bar is connected to line neutral and has a rolled rail that is formed by rolling an end of a conductive plate and bending the plate at a transition portion to position the rolled rail above and at an angle of a major flat surface of an extension of the neutral bus bar. Wire-capture apparatuses secured along an edge of an extension of the neutral bus bar can capture wires from circuit breakers that lack an internal connection to a neutral plug-on mounting jaw or that lack a neutral plug-on mounting jaw altogether.

Abstract: Various embodiments provide safety disconnect systems for a power system. In one aspect, a safety disconnect system includes an enclosure operative to receive a plurality of input power lines into the enclosure and provide a plurality of output power lines out of the enclosure. Each input power line is coupled to and paired with a corresponding one of the output power lines, where each input power line and output power line is operative to provide power from a power source. A plurality of switches are provided in the enclosure, each of these switches coupled between an associated one of the pairs of input power line and output power line, and each switch operative to disconnect the associated input power line from the corresponding output power line.

Abstract: This disclosure describes examples of an apparatus to enclose components of a switching assembly of an automatic transfer switch. In one embodiment, the apparatus, or arc chamber cover, has a housing made of material with optical properties that permit observation of the interior of the housing. A mounting assembly couples to the housing. The mounting assembly secures the apparatus to the automatic transfer switch. In one example, the mounting assembly comprises feet comprising a material with mechanical properties that can withstand pressure and other forces inside of the interior chamber. The apparatus also includes one or more baffles to control the flow of gasses and control electric arcs within the switching assembly.

Abstract: Electrical enclosure assemblies, electrical service enclosures, and methods of assembling an electrical enclosure assembly are presented herein. An electrical enclosure assembly for housing electrical components of an electrical distribution system is disclosed. The enclosure assembly includes a plurality of sidewalls interconnected to define therebetween a mounting space within which are mounted the electrical components, and define at one end thereof an open endface. An endwall guide extends from one or more of the sidewalls into the mounting space. The endwall guide includes a plurality of elongated slots, a plurality of projections, or both. The enclosure assembly also includes an endwall configured to at least partially close off the open endface. The endwall includes a plurality of elongated slots, a plurality of projections, or both. Each of the projections is configured to fit into and secure with a respective elongated slot to thereby removably mount the endwall to the sidewalls.

Abstract: Exemplary embodiments are directed to a plug-in system having a lower part, on which busbars can be arranged, and an upper part which is made of electrically insulating material and is releasable from the lower part in a non-destructive manner on a top side arranged opposite the underside. Protective devices having electrical contacts can be arranged on the plug-in system. The upper part has openings through which the electrical contacts of the protective devices can make direct contact with the busbars. The openings are configured in such a manner that the plug-in system is shockproof to IP XXB. The upper part and lower part are latchable into one another or are screwable to one another in such a manner that the upper part is releasable from the lower part only from the underside of the plug-in system.

Abstract: A sealed electrical enclosure used in hazardous locations for enclosing circuit breakers having a bottom housing and a removable top housing with a labyrinth joint or serrated joint formed therebetween, the bottom housing adapted to receive one or more circuit breakers, a first metal bus extending from a point internal to the bottom housing through a first end wall to a point external thereto, and a second metal bus extending from a point internal to the bottom housing through a second end wall to a point external to thereto, where the first and second metal buses are adapted to contact first and second electrical terminals of a circuit breaker when placed within the bottom housing, and a first lug retaining bracket secured to the bottom housing and extending to a position beneath the first metal such that a bottom portion of a connector assembly may fit within the space between the end of the lug retaining bracket and the bottom of the first metal bus.

Abstract: A safety module (24) is adapted to be connected to one or more smoke detectors (36) and mounted adjacent circuit breakers (12, 14) on a switch board (10). The safety module has an arm (26) that overlies the circuit breaker levers (28, 30) of the adjacent circuit breakers (12, 14). When a smoke alarm activates the arm (26) moves the circuit breaker levers (28, 30) to an open position.

Abstract: A power transfer device adapted for interconnection with the electrical system of a building includes a housing that includes a base having a back wall and an intermediate member that engages the base. A first housing section engages the base and the intermediate member and defines a first interior portion. A second housing section engages the base and the intermediate member and cooperates with the base to define a second interior portion. Fasteners secure the intermediate member, the first housing section and the second housing section together. Power transfer switching components are interconnected with and carried by one of the housing sections. A cover may be pivotably mounted to the housing.

Abstract: A weatherproof box enclosure adapted to be secured on one of an outside wall and roof location of a multi-tenant building structure supporting roof-mounted solar panel or wind turbine generators including a multiple pole control unit receiving and distributing received alternating current voltages from the generators, which is disengagable by a normally open override switch when supplied voltages fall below a predetermined level, when servicing of the components of the safety box enclosure is to be had, and automatically in the event of an emergency as representative of a closing of the override switch by a ground level control.

Abstract: An electrical panelboard enclosure includes a primary service panel configured to receive power from a main power source and an alternate power source, an alternate power source connector array, and a distribution panel that delivers main or alternate power to subsidiary load circuits. A service transfer switch unit includes a main power breaker and an alternate power breaker having mutually interlocked toggle switches for respectively activating/deactivating the main and alternate power. The panelboard enclosure further includes a power cutoff switch operable from outside a service entrance door of the enclosure to mechanically engage and deactivate the main power breaker toggle switch.

Abstract: A sealed electrical enclosure for use in hazardous locations for enclosing circuit breakers having a bottom housing and a top housing with a labyrinth joint, a serrated joint, or combination of both being formed therebetween, a first aperture extending through a first end wall of the bottom housing and positioned adjacent a first contact terminal of a first circuit breaker, the first aperture further including a first metal bus extending therethrough and in electrical contact with the first contact terminal, and a second aperture extending through a second end wall of the bottom housing and positioned adjacent a second contact terminal of the first circuit breaker, the second aperture further including a second metal bus extending therethrough and in electrical contact with the second contact terminal, and a first actuating mechanism positioned on the top housing adapted for manipulating a switch of the first circuit breaker.

Abstract: This disclosure describes examples of an apparatus to enclose components of a switching assembly of an automatic transfer switch. In one embodiment, the apparatus, or arc chamber cover, has a housing made of material with optical properties that permit observation of the interior of the housing. A mounting assembly couples to the housing. The mounting assembly secures the apparatus to the automatic transfer switch. In one example, the mounting assembly comprises feet comprising a material with mechanical properties that can withstand pressure and other forces inside of the interior chamber. The apparatus also includes one or more baffles to control the flow of gasses and control electric arcs within the switching assembly.

Abstract: An electrical panelboard enclosure includes an enclosure housing with an interior equipment chamber accessible by way of a service entrance door. A service panel is adapted for connection to a main power source in order to receive main power therefrom. A power supply is operatively connected to receive main power from the service panel and deliver it to a load. The power supply is also adapted for connection to a backup power source in order to receive backup power therefrom and deliver it to the load in the event of a main power cutoff. A load disconnector is operatively connected between the power supply and the load. The load disconnector is manually operable to disconnect the load from the power supply to prevent the power supply from delivering either main or backup power to the load.

Abstract: A modular power distribution system comprises a chassis; and a backplane including a power input, and a plurality of module connection locations. A plurality of modules are mounted in the chassis, each module mounted to one of the module connection locations. Each module includes: (i) an OR-ing diode; (ii) a circuit protection device; (iii) a microprocessor controlling the circuit protection device; and (iv) a power output connection location. A circuit option switch is located on each module for setting the current limits for each module. A control module is provided connected to the backplane.

Abstract: Some embodiments relate to a load control module that includes an enclosure and a plurality of power switching devices within the enclosure. The load control module further includes an interface mounted on an exterior of the enclosure and a switch connected to the interface. The switch is connected to the interface such that the switch selectively activates the interface to permit testing of the power switching devices upon operation of the interface. In some embodiments, the load control module may include a display that provides information relating to whether the interface is activated by the switch. Other embodiments relate to a load control module that includes a generator having a controller which controls operation of the generator and provides commands to the switch to selectively activate the interface to permit testing of the power switching device upon operation of the interface.

Abstract: To provide an electrical junction box that can maintain a stable assembly condition between a box main body and a cover member, even if locking mechanisms are not provided on a whole periphery of the electrical junction box. An electrical junction box includes a box main body and a cover member. One of the box main body and the cover member is provided on at least a single of side portions of the one peripheral wall with a locking mechanism. An elastic rib that protrudes from an inner peripheral surface of the one peripheral wall at one of the side portions is pressed onto a fitting projection piece. A side portion is provided with a support wall that is opposed to and spaced apart from the inner peripheral surface. The fitting projection piece is held in a space between the inner peripheral surface and the support wall.

Abstract: A low-voltage and high-voltage integrated junction box includes a high-voltage distribution part, a low-voltage control board, and a control box. The high voltage distribution part includes a high-voltage relay for applying/cutting high voltage to an output terminal by distributing high voltage applied from a high-voltage battery and a bus bar for transmitting the high voltage applied through the high-voltage relay to the output terminal. The low-voltage control board controls low-voltage load and controls a breakdown of the high-voltage distribution part and operation of electric components of a vehicle. The control box accommodates therein the high-voltage distribution part and the low-voltage control board. With this integrated injunction box, manufacturing costs can be reduced.

Abstract: An electrical enclosure includes a housing, a moveable bracket, an electrical device, a lever, and a drive assembly. The housing has a door attached to a body. The moveable bracket couples the electrical device to the body. The lever is positioned outside of the housing and is configured to switch between OFF and ON lever positions. The drive assembly at least partially protrudes through an aperture of the body and is attached to the lever. The drive assembly includes a drive cog that directly moves the handle of the circuit breaker between OFF and ON handle positions when the electrical device is in an operational position and the lever is switched from the OFF to the ON lever position.

Abstract: A circuit protection system has a normal mode, and a maintenance mode with reduced potential arc flash energy. A downstream circuit breaker is mounted within a first enclosure comprising a first access panel. A locking mechanism locks the first access panel closed. An upstream breaker is mounted within a second enclosure comprising a second access panel. A current sensor senses current and is in communication with an electronic trip unit that controls current interruptions by the upstream breaker based on a trip setting. A user interface device is accessible when second enclosure is closed, and allows user selections of normal and maintenance modes. When maintenance mode is selected, the trip unit changes the trip setting such that potential arc flash energy is reduced. The system is configured to keep the first access panel locked closed based on normal mode being selected, and allow unlocking based on maintenance mode being selected.