Abstract: A device is provided for riding through brownouts, or transitory losses of control power applied to electromagnetic devices such as contactors and relays. An energy storage circuit stores charge that can be discharged into a contactor operating coil during partial or full losses of control power and for short durations. Momentary reductions in control power can thus be experienced without opening or otherwise changing the logical state of the contactor. Emergency stop override circuitry may be provided for preventing the ride-through performance, thus enabling the device to provide for both ride-through of short losses of control power, while permitting emergency stopping of loads due to the override.

Abstract: A current sensing module is provided for contactors and similar switch gear. The current sensing module is packaged so as to be capable of mounting on a line or a load side of a contactor. The current sensing module may be eliminated where current signals are not needed, but can be added to the package where monitoring and control functions may benefit from sensed current signals on either or both sides of a contactor. The current sensing module may be configured as a single or multiple-phase device, and may output either analog or digital signals to local devices or to networked devices.