InPower introduces solid-state DC contactors

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InPower’s Series SSC10 line of single-channel solid-state contactors is available in current ranges of 100, 150 and 200 amps. The 100-percent electronic high-current power switches facilitate automatic shutdown for over-current, high-temperature and loss-of-ground conditions; and the low-resistance DC power switch is designed to produce a low-voltage drop and generate only a small amount of internal heat.

As the solid-state contactors have zero-battery current draw in the off state, they make ideal master-battery disconnect switches, according to the company; also, they can be installed directly in the battery cable with smaller control wires running to the remote activation switches. Other applications include the remote-control of high-current DC loads such as blower motors, auxiliary air-conditioner units, lights and hydraulic pump motors.

Over-current protection employs an advanced software-controlled scheme that incorporates a three-stage current/time profile, unlike fuses and mechanical circuit breakers that have one fixed curve determined by their thermal characteristics. InPower says this over-current shutdown protection more closely matches the characteristics of the different types of loads with their individual turn-on surges and running amperages.

The solid-state contactor products are packaged in a totally sealed case, and their four mounting hole pads are designed to provide the required connection to ground; the control input utilizes a 1/4-inch Faston blade terminal. Connections for the high-current DC cables utilize 3/8-16 threaded stainless-steel studs with brass contact pads added for low-contact resistance; they also contain detent grooves that allow rubber terminal boots intended to be used for additional protection from the environment, as well as from accidental shorting.

For more information, go to www.inpowerdirect.com.