Cutler-Hammer WMS3D10 Three-Phase Molded Case Circuit Breaker

The Cutler-Hammer Cutler-Hammer WMS3D10 is a three-pole molded case circuit breaker rated at 10 A for 480Y/277 VAC three-phase power. Molded case breakers encase the switching mechanism in a molded enclosure to provide electrical insulation and enclosure protection during operation, and the WMS3D10 designation identifies this unit within that family. With a 3-pole configuration and 480Y/277 V rating, it is designed to interrupt and protect 3-phase circuits operating on that voltage level. This device is part of the Cutler-Hammer line of protective devices from Cutler-Hammer, offering compatibility with standard 3-phase distribution setups that require a 10 A MCCB in the WMS family.