ZB12-1 Eaton Overload Relay

The Moeller ZB12-1 is a thermal overload relay designed for motor protection across an adjustable current range of 0.6–1A. Its contact arrangement includes one normally open and one normally closed auxiliary contact, allowing integration into control circuits. For short-circuit protection at up to 600 VAC, the relay can be paired with either a 3A fuse or a 25A circuit breaker. The 3P overload relay is certified to UL, CSA, and IEC standards. The adjustable current range supports overload protection for motors operating within the specified 0.6–1A limits, while the auxiliary contacts provide switching functions for compatible control-circuit arrangements. The ZB12-1 is intended for industrial control applications requiring thermal motor overload protection.