Allen-Bradley 140U-H-EA1R1 Auxiliary Alarm Combination Switch

The Allen-Bradley 140U-H-EA1R1 Auxiliary Alarm Combination Switch is an internal breaker accessory for Bulletin 140U molded‑case circuit breakers that adds both an auxiliary contact for ON/OFF status indication and an alarm contact for trip signaling to support remote monitoring. It provides 1 auxiliary contact and 1 alarm contact with dry contacts, enabling remote indication of breaker position and trip status in industrial control panels, motor control centers, and power distribution systems. Key specifications include a rated operational voltage up to 600 VAC; rated current of 6 A at 240 VAC and 3 A at 480 VAC (application dependent); electrical life of at least 10,000 operations and mechanical life of at least 20,000 operations. The module mounts internally on the breaker accessory mounting and uses screw terminals, and is compatible with 140U molded case breakers, commonly installed in industrial automation equipment. Applications span motor control centers, switchboards, and industrial control panels where status indication and trip signaling are required. Common replacements include Allen-Bradley 140U-H-AFA1 Auxiliary Switch, 140U-H-ATA1 Alarm Switch, and 140U-H-EA2R2 auxiliary alarm combination switch.