Altech 25A 1P Pole Thermal Magnetic Circuit Breaker, 48 V dc, 277 V ac R. Terminal Contact Type: Screw. Break Time: Time Delayed. Special Features: Positive Trip Indicator, Relatively Long Thermal Trip Delay But Low Magnetic Trip Point. Rated AC Voltage: 277V. Rated DC Voltage: 48V. Circuit Breaker Type: MCB. Tripping Characteristics: Type B. Reset Actuator Type: Toggle Switch. Overall Dimensions: 17.5 x 96.1 x 83.5mm. Overall Depth: 83.5mm. Breaking Capacity at Maximum Voltage Rating: 10 kA. Mounting Style: DIN Rail Mount. MPN: 1BU25R