Eaton's Cutler-Hammer SPHM3YL0020 hydraulic-magnetic supplementary protector is a 3-pole, 20 A overcurrent protection device. As a supplementary protector, it is designed for installation in electrical panels and control circuits to provide additional protection for three conductors. The device uses hydraulic-magnetic trip technology to deliver reliable overcurrent protection. Part number SPHM3YL0020 identifies this specific unit.
