For sale is a Klockner - Moeller Type ZM6-63 Circuit Breaker. 3-Phase operation. 12kA Maximum breaking capacity at 440 - 500 V AC. This circuit breaker switch is in good usable condition; ready to be installed. 7" (H) X 4-1/8" (W) X 4-1/4" (D) Overall dimensions, not including handle and operating mechanism extension.