Eaton Cutler-Hammer WMS3B40 Supplementary Protector

The Eaton Cutler-Hammer WMS3B40 Supplementary Protector is a 3-pole, 40-amp protective device designed to provide an additional layer of circuit protection within Eaton electrical systems. Identified by part number WMS3B40, this component belongs to the Cutler-Hammer family and is intended to function as a supplementary protector in electrical panels and distribution equipment. With a 3-pole configuration and a 40-amp current rating, it supports applications requiring three-phase protection to coordinate with primary protection in compatible equipment. This supplementary protector is designed to be used alongside existing Eaton hardware to enhance overall protection in compliant switchgear setups. As part of Eaton's protection lineup, it integrates with other Cutler-Hammer devices to extend safety and reliability in power distribution applications.