Abstract: An apparatus includes a surge protection device, a current sensor configured to sense a current through the surge protection device, and a surge discriminator circuit coupled to the current sensor and configured to discriminate among a plurality of surge levels for the surge protective device responsive to the sensed current. The current sensor may include a current transformer configured to generate a secondary current responsive to the sensed current and the surge discriminator circuit may be configured to discriminate among a plurality of surge levels responsive to the generated secondary current.

Abstract: An apparatus includes a plurality of surge protection devices (e.g., multiple metal oxide varistors connected in parallel) configured to be coupled to a power system, a plurality of mechanical actuators associated with respective ones of the surge protection devices and configured to indicate status of the associated surge protection devices, and a detector circuit configured to sense actuation of the actuators and responsively determine a protection status of the plurality of surge protection devices. The detector circuit may include a plurality of switches configured to be actuated by respective ones of the actuators. The detector circuit may further include a processor coupled to the plurality of switches and configured to determine states of switches and to determine the protection status based on the determined status of the switches. The processor may be configured to interpret the status of the switches based on a stored identifier.

Abstract: An apparatus includes a surge protection device, a current sensor configured to sense a current through the surge protection device, and a surge discriminator circuit coupled to the current sensor and configured to discriminate among a plurality of surge levels for the surge protective device responsive to the sensed current. The current sensor may include a current transformer configured to generate a secondary current responsive to the sensed current and the surge discriminator circuit may be configured to discriminate among a plurality of surge levels responsive to the generated secondary current.

Abstract: An apparatus includes a plurality of surge protection devices (e.g., multiple metal oxide varistors connected in parallel) configured to be coupled to a power system, a plurality of mechanical actuators associated with respective ones of the surge protection devices and configured to indicate status of the associated surge protection devices, and a detector circuit configured to sense actuation of the actuators and responsively determine a protection status of the plurality of surge protection devices. The detector circuit may include a plurality of switches configured to be actuated by respective ones of the actuators. The detector circuit may further include a processor coupled to the plurality of switches and configured to determine states of switches and to determine the protection status based on the determined status of the switches. The processor may be configured to interpret the status of the switches based on a stored identifier.

Abstract: An apparatus includes a surge protection device, a current sensor configured to sense a current through the surge protection device, and a surge discriminator circuit coupled to the current sensor and configured to discriminate among a plurality of surge levels for the surge protective device responsive to the sensed current. The current sensor may include a current transformer configured to generate a secondary current responsive to the sensed current and the surge discriminator circuit may be configured to discriminate among a plurality of surge levels responsive to the generated secondary current.

Abstract: Bus mounted surge protection devices are provided that are configured to be positioned in a panelboard alongside one or more similarly sized circuit breaker devices. The bus mounted surge protection device is configured to be received by a same provisional bus as the one or more circuit breaker devices and the bus mounted surge protection device is configured to protect all of the one or more circuit breaker devices in the panelboard.

Abstract: Bus mounted surge protection devices are provided that are configured to be positioned in a panelboard alongside one or more similarly sized circuit breaker devices. The bus mounted surge protection device is configured to be received by a same provisional bus as the one or more circuit breaker devices and the bus mounted surge protection device is configured to protect all of the one or more circuit breaker devices in the panelboard.