DC Relays (IC2820)

The IC2820A100, IC2820A101 and IC2820A200 General Purpose Relays are used for under-voltage protection, plugging and similar applications. Relays are available with either shunt or series coils and can be mounted on either steel or insulating panels.

Time-Delay units (IC2820A100A and IC2820A100B) are offered for motor acceleration, sequence interlocking and other applications requiring delayed opening or closing of control circuits.

The IC2820E500 Instantaneous Overload Relay is used in the protection of DC Motors and driven machines against suddenly applied high overloads. An instantaneous overload relay is normally used on cranes, hoists and other applications in which heavy overloads are encountered.

IC2820D300 Field-loss Relay’s are used to protect DC shunt or compound-wound motors against the loss of field excitation. The coil of the relay is connected in series with the motor field and when excitation is lost the relay drops out and opens the motor line contactor.

GE’s AC Low-Voltage Relays are the IC2820A102, which provides Ground Fault Protection by interrupting control power when ground current is detected. The IC2820A102A Differential Relay detects any difference in current going in and out of each phase of a wye-connected motor. The current difference will trip the relay and shut down the motor by opening the motor line contactor.

IC2820C100 and IC2820C100B Field Application Relays work in conjunction to provide time-delay for closing the field contactor when the proper DC voltage is available to pull the machine into step.

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