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.

Hazardous location compliant solid state circuit protection devices include safety lockout components ensuring disconnection as a safeguard in the completion of power system maintenance and service tasks by responsible personnel. The safety lockout components may include a mechanical lockout interfacing with a physical lock element, an electrical lockout implemented through the controls of the solid state circuit breaker device, and combinations thereof. Visual device feedback and confirmation may be provided to personnel that the lockouts have been successfully activated, as well as successfully deactivated to reconnect and restore operation of the load side circuitry.

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 hazardous locations.

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 housing with an inner lining, made of an open-pore material, preferably covering at least two sides of the housing, for the reduction of internal explosion pressure. In addition, or alternatively, a molded body made of the open-pore material, for example a bonded fibrous material, may be arranged in the housing.

The present disclosure envisages a mechanism (100) for indirect access to an actuator (210) on an apparatus (200) disposed within a housing (300). The mechanism (100) comprises a bushing (10), a spring-loaded shaft (20), an arm (30), a first stopper (40) and a pedestal (50). The spring-loaded shaft (20) passes through the bushing (10) and is configured to reciprocate through the annular passage (12). An arm (30) is disposed within the housing (300), and is coupled to the shaft (20). The first stopper (40) is received on the shaft (20) operatively below the arm (30). The pedestal (50) is disposed between the arm (30) and the first stopper (40). The pedestal (50) is configured to facilitate abutment of the arm (30) with the actuator (210). The arm (30) is configured to press the actuator (210) when the shaft (20) is linearly displaced.

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.

A pyrotechnic switch comprises a housing formed by a first housing part and a second housing part, at least one rivet by means of which the first housing part is riveted onto the second housing part in order to form the housing, and at least one pyrotechnic actuator arranged in the housing. Further, at least one of the first housing part or the second housing part comprises a metal insert and a plastic body overmolded onto the metal insert, and the metal insert comprises a passage opening for the rivet such that the rivet is in contact with the passage opening of the metal insert.

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 actuator assembly for actuating an electrical switch housed in sealed electrical enclosure is disclosed. The actuator assembly includes a handle assembly including a handle positioned on an exterior of a cover of the sealed enclosure, a trip bracket positioned within the sealed enclosure and a shaft connecting the handle to the trip bracket. A slider actuator is slidably mounted over an electrical switch positioned within the enclosure and operatively associated with or coupled to a toggle of the electrical switch. The slider actuator has a drive link which is adapted to engage the trip bracket such that rotation of the handle activates the drive link which causes linear movement of the slider actuator to move the electrical switch between on and off positions. The use of the slider actuator allows a higher density of electrical switches to be stacked within the sealed enclosure.