A hybrid circuit breaker includes a primary trip/isolation relay component and a primary trip/isolation relay component driver coupled to the primary trip/isolation relay component and structured to interrupt current from flowing to the load in an event of fault; a sensing mechanism structured to sense at least current, voltage, and power flowing to the load; a metrology component coupled to the sensing mechanism and structured to monitor and measure at least the current, voltage and power; a controller structured to detect the event of fault based on data received from the sensing mechanism and the metrology component and communicate with a user device; and a hybrid secondary switching device coupled to the controller and the primary trip/isolation relay component, the hybrid secondary switch device including secondary contacts, a miniaturized electromechanical relay and a power electronics circuit connected in parallel with the miniaturized electromechanical relay.

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 electrical receptacle includes a printed circuit board (PCB), a power control unit coupled to the PCB, AC electrical conductors, and an electrical receptacle coupled to the PCB. The electrical contacts are in electrical communication with respective ones of the electrical conductors. A first portion of each electrical conductor is coupled to a power source and a second portion of each electrical conductor is coupled to respective ones of the electrical contacts. The power control unit includes a controller and a switch, the switch operable to selectively establish continuity between the first and second portions of at least one of the electrical conductors. The controller is configured to selectively place the switch into either a closed position or an open position in response to a signal received from an environmental or occupancy sensor.

An electrical receptacle includes a printed circuit board (PCB), a power control unit coupled to the PCB, AC electrical conductors, and an electrical receptacle coupled to the PCB. The electrical contacts are in electrical communication with respective ones of the electrical conductors. A first portion of each electrical conductor is coupled to a power source and a second portion of each electrical conductor is coupled to respective ones of the electrical contacts. The power control unit includes a controller and a switch, the switch operable to selectively establish continuity between the first and second portions of at least one of the electrical conductors. The controller is configured to selectively place the switch into either a closed position or an open position in response to a signal received from an environmental or occupancy sensor.

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.

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.

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.

An overvoltage protection device includes: input terminals; output terminals; at least two overvoltage protection elements for forming staggered protection levels; and at least one longitudinal element electrically connecting an input terminal and an output terminal to conduct an operating current. In order to form a first protection level, a first overvoltage protection device is connected to two input terminals on an input side upstream of the at least one longitudinal element, and, in order to form a second protection level, a second overvoltage protection element is connected to two output terminals on an output side and downstream of the at least one longitudinal element, the at least one longitudinal element influencing a response of the at least two overvoltage protection elements in case of an overvoltage. The at least one longitudinal element is provided with a thermal overload protection device for reducing a possible current flow.

A system is described that turns off a high power, power supply when a device no longer needs high power. A low power, power supply or a rechargeable battery provides power to determine when the device again needs high power. The low power supply consumes a minimum possible power when the device does not need high power and the power rechargeable battery is not charged. That is, the high power and low power, power supplies are turned on or off based on the real time power consumption need of the device and the charged state of the battery. The power need of the device is monitored by a current shunt monitoring circuit and a control signal monitoring circuit.