Supplementary Circuit Breaker Protectors: Type - Supplementary Hydraulic Magnetic Breaker; Poles - 1P; Amps - 20; Voltage - 277VAC 80VDC; Rating - kA IR - 5; Actuator Style - Toggle Lever; Mounting - Panel Cutout; Terminals - Screw; WxHxD - 0.75x2.00x1.64"; Additional Information - Trip Curve Type: Long, Hi-Inrush Delay; Manufacturer Series - A