Altech 500mA 3 Pole Thermal Magnetic Circuit Breaker, 480Y/277V UL. Circuit Breaker Type: MCCB. Reset Actuator Type: Handle. Overall Dimensions: 105.3 x 52.5 x 74.4mm. Overall Depth: 74.4mm. Tripping Mechanism: Thermal-Magnetic. Tripping Characteristics: Type C. Breaking Capacity at Maximum Voltage Rating: 10 kA. Overall Length: 105.3mm. Special Features: HACR Type, Line/Load Reversible. Break Time: Time Delay. MPN: 3C05UL