The catalog number 140G-G-EA2R1A identifies an auxiliary contact block that has been designed and built by Allen-Bradley in order to provide additional signals for the remote monitoring of the open or closed condition of 140G series circuit breakers and switches. It is designed to be compatible with Frames G, H, I, and J of the 140G series, and it is composed of 2 auxiliary contacts and 1 alarm contact, both in Form C. It has a rated voltage of 250 Volts AC at a rated current of 6 Amps and it is suitable for installation with AWG 20 (0.5 millimeters) cables. For DC operation, the rated operational current varies between 0.5 Amps at 110 Volts DC and 0.3 Amps at 250 Volts DC.

 

The Allen-Bradley 140G-G-EA2R1A auxiliary contact block is easily installed by removing the main device cover and accessing the pockets on the right side within with the snap-in mounting provisions. It comes supplied with 1-meter (39-inch) pigtail wiring, with markings in each terminal wire. The Allen-Bradley 140G-G-EA2R1A auxiliary contact block is used to indicate the ON/OFF status of the main device. The alarm contacts (AL) indicate the trip status of the MCCB (Molded Case Circuit Breaker). The alarm can be tripped by pressing the test button on the molded case circuit breaker or it can be initiated due to overcurrent, short circuit, residual currents, shunts, or undervoltage situations. Some external functions that can be triggered by the use of auxiliary contact blocks such as the Allen-Bradley 140G-G-EA2R1A auxiliary contact block are audible alarm sounds, signaling a visual alarm with a light, initiating a machine process, and engaging a backup power source.

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