In one embodiment, a method includes, by a switch device, determining a position of an on/off input selector, the on/off input selector being located within a switch device, in response to determining the position of the on/off input selector is in an off position, operating one or more solid state switches to suspend current to one or more load-side terminals, determining whether the one or more load-side terminals of the switch device are electrically isolated, in response to determining the one or more load-side terminals of the switch device are electrically isolated, generating a prompt via a graphical user interface, and receiving, via the graphical user interface, one or more inputs, the one or more inputs including at least a request for safety lockout instructions.

Solid state and hybrid circuit protection devices include improved arc-less switching capability and overcurrent protection, improved terminal assemblies and improved thermal management features that reduce or eliminate ignition sources for hazardous environments. The solid state and hybrid circuit protection devices are ignition protected and avoid possible explosions and therefore obviate a need for conventional explosion-proof enclosures to ensure safe operation of an electrical power system in a hazardous location.

Solid state and hybrid circuit protection devices include improved chemical, static discharge and impact resistant housing construction, arc-free switching operation, secure terminal assemblies and thermal management features. The solid state and hybrid circuit protection devices are ignition protected and avoid possible explosions and therefore obviate a need for conventional explosion-proof enclosures to ensure safe operation of an electrical power system in a potentially explosive environment.

An electromagnetic contactor 1 includes a case including an arc extinguishing chamber, an arc extinguishing cover attached to the case and covering the arc extinguishing chamber, and terminal covers arranged on the arc extinguishing cover and attached to the case. The case is formed with a first engagement portion, and the terminal covers are formed with a second engagement portion that is engaged with the first engagement portion to hold the terminal covers on the case. Then, the terminal covers are held on the case in either a first state where there is a gap between the first and second engagement portions or a second state where the terminal covers move in directions away from the arc extinguishing cover and the first and second engagement portions are engaged.

A terminal cover to cover a terminal to which an electric wire is to be connected, the terminal cover includes: an outer frame having an outer frame notch; and an inner frame provided within the outer frame notch in the outer frame, the inner frame having an inner frame notch smaller than the outer frame notch. Further, the outer frame and the inner frame are formed thinner than a peripheral portion and are connected to each other with cutoff portions that are bendable, twistable, or cuttable with a cutting tool, and the terminal is viewed through the inner frame notch.

Modular circuit protection devices and configurable panelboard systems include arc-free operation, thermal management features providing safe operation in hazardous environments at lower cost and without requiring conventional explosion-proof enclosures and without entailing series connected separately provided packages such as circuit breaker devices and starter motor contactors and controls.

Modular circuit protection devices and configurable panelboard systems include arc-free operation, thermal management features providing safe operation in hazardous environments at lower cost and without requiring conventional explosion-proof enclosures and without entailing series connected separately provided packages such as circuit breaker devices and starter motor contactors and controls.

A fuse cutout cover is disclosed that allows a lineman to engage a metal hook assembly and pull ring of the cutout with a loadbreak tool. The cutout also includes a wire connector and a metal top connector that leads from the wire connector to the top of the fuse. A front opening in the cover allows easy access by a loadbreak tool over a wide range of angles. A roof of the cover extends beyond the sidewalls of the opening and covers an end of the top connector. An inner vertical wall of the cover has a bottom edge that rests on the top surface of the top connector to space the roof from the top connector to provide additional vertical clearance when positioning the loadbreak tool to engage the cutout. The wall also blocks access to the enlarged open to prevent birds from nesting in the opening.

A terminal clamp cover device for low voltage circuit breakers, in particular for molded case circuit breakers, having one or more phases, each provided with a terminal for the electrical connection of the circuit breaker, a clamp for the connection of the terminal to an electrical circuit and a vent opening to discharge the gases produced in the circuit breaker during opening/closing operations. The device includes an insulating body that covers the clamp, the insulating body being provided on at least one portion of its outer surface with a plurality of heat dissipating elements. A low voltage circuit breaker, in particular a low voltage molded case circuit breaker, including a device of the type described also forms part of the application.

Solid state and hybrid circuit protection devices include improved chemical, static discharge and impact resistant housing construction, arc-free switching operation, secure terminal assemblies and thermal management features. The solid state and hybrid circuit protection devices are ignition protected and avoid possible explosions and therefore obviate a need for conventional explosion-proof enclosures to ensure safe operation of an electrical power system in a potentially explosive environment.