A modular power distribution system for use on a vehicle having an electric power source. The system includes a power distribution block having a switch socket with a first format, a device socket having a second format, associated with the switch socket to form a socket pair, a relay electrically coupling the switch socket to the device socket, and input power terminals electrically coupled to the socket pair and the relay, and configured to be electrically coupled to the electric power source. A switch wire harness includes a switch plug having a first complemental format configured to be removably received by the first format of the switch socket. A device wire harness includes a device plug having a second complemental format configured to be removably received by the second format of the device socket.

Apparatus and method for a modular switchboard provide an adjustable length bus bridge for electrically connecting two adjacent switchboards, where the length of the bus bridge can be adjusted on site if needed. The bus bridge comprises a first set of busbars, each being electrically insulated from one another, and a second set of busbars, each being electrically insulated from one another. The first and second sets of busbars are arranged such that the busbars in the first set of busbars and the busbars in the second set of busbars are slidable relative to one another to adjust a length of the bus bridge. A longitudinal slot is formed in each busbar in either the first or the second set of busbars, or both, to accommodate a through bolt in the bus bridge when the first and second set of busbars slide relative to one another.

Apparatus and method for a modular switchboard provide an adjustable length bus bridge for electrically connecting two adjacent switchboards, where the length of the bus bridge can be adjusted on site if needed. The bus bridge comprises a first set of busbars, each being electrically insulated from one another, and a second set of busbars, each being electrically insulated from one another. The first and second sets of busbars are arranged such that the busbars in the first set of busbars and the busbars in the second set of busbars are slidable relative to one another to adjust a length of the bus bridge. A longitudinal slot is formed in each busbar in either the first or the second set of busbars, or both, to accommodate a through bolt in the bus bridge when the first and second set of busbars slide relative to one another.

An energized parts guard is disclosed comprising a panel of substantially rigid, electrically insulative material wherein the substantially rigid panel further comprises a first one or more apertures and a second one or more apertures. The first one or more apertures are so dimensioned to accept one or more circuit breakers inserted into the first one or more apertures such that there is less than a 12.5 mm gap between the panel and the circuit breaker on at least two sides of the one or more circuit breakers. The second one or more apertures are positioned to facilitate access to at least one terminal of each of the one or more circuit breakers when the one or more circuit breakers are inserted into the first one or more apertures.

The disclosure is a relay module structure. A relay includes a main body and multiple pins connected to the main body. A loading box includes a box body receiving the main body and a flexible latch portion connected to the box body. The box body has a force exerting portion and multiple slots. The pins project from the slots. A relay seat includes a seat body having a recess, a positioning portion, and terminal holes. The loading box is inserted in the recess by engagement between the flexible latch portion and the positioning portion. The pins are inserted in the terminal holes. The flexible latch portion is separated from the positioning portion by exerting a force on the force exerting portion to make the loading box separate from the relay seat.

Embodiments provided herein are directed to an improved way to access and increase the area of an electrical distribution device provided for cable pulling and cabling. A rotatable section, on which several electrical components of the electrical distribution device are attached, can be rotated away from the cabling area as a single unit. This permits easier access to the cabling area and increases the size of the cabling area, which results in less time required to pull cables and wire the electrical components of the electrical distribution device.

An apparatus provides a single split-bus electrical panel with a first panel section that supplies power to non-critical loads and a second panel section to supply photoelectric power to critical loads. A patch panel associated with the split-bus electrical panel is configured to enable an installer to selectively connect factory installed connections to either: (1) connect each panel section directly to utility power for full utility power to both panel sections; (2) alternately to connect the second panel section to the utility power via a microgrid interconnection device when the second panel section is presently at least partially powered by back-up photovoltaic power, or (3) alternately connect both panel sections to full back-up photovoltaic power.

A simulated protected loads panel system for managing energy consumption and obviating the need to install a physical protected loads panel in conjunction with an energy storage system, comprising a controller, in operable communication with electrical current and/or voltage sensors and relays, which is configured to control the amount of and/or distribution of electrical power from a source of electrical power to an electrical load based on user preference, energy storage system charge, and/or available or anticipated power generation and/or usage.

A simulated protected loads panel system for managing energy consumption and obviating the need to install a physical protected loads panel in conjunction with an energy storage system, comprising a controller, in operable communication with electrical current and/or voltage sensors and relays, which is configured to control the amount of and/or distribution of electrical power from a source of electrical power to an electrical load based on user preference, energy storage system charge, and/or available or anticipated power generation and/or usage.

A circuit breaker and panel system includes a panel including a base pan having a plurality of base pan electrical connections. A circuit breaker including a housing having a plurality of circuit breaker electrical connections arranged to contact the base pan electrical connections when the circuit breaker is coupled to the base pan. The circuit breaker is rotatably coupleable with the base pan via a pivot joint for engaging the plurality of base pan electrical connections with the plurality of circuit breaker electrical connections per a predetermined electrical connection coupling sequence. One of the housing and the base pan includes a protrusion and the other of the housing and the base pan includes a corresponding recess which, when engaged with each other, retain the housing to the base pan to prevent reverse rotational movement of the breaker with respect to the base pan.