Altech 12A 1P Pole Thermal Magnetic Circuit Breaker, 48 V dc, 277 V ac R. Circuit Breaker Type: MCB. Reset Actuator Type: Toggle Switch. Overall Dimensions: 17.5 x 96.1 x 83.5mm. Overall Depth: 83.5mm. Tripping Mechanism: Thermal-Magnetic. Tripping Characteristics: Type B. Breaking Capacity at Maximum Voltage Rating: 10 kA. Terminal Contact Type: Screw. Break Time: Time Delayed. Application: Appliances, Business Equipment, Control Circuit, Lighting, Power Supplies, Sensitive Electronics, Wiring Protection. Mounting Style: DIN Rail Mount. Rated DC Voltage: 48V. MPN: 1BU12R