Altech 3A 3 Pole Thermal Magnetic Circuit Breaker, 480Y/277V V-EA. Breaking Capacity at Maximum Voltage Rating: 10 kA. Overall Length: 93.3mm. Application: AC Discharge Lamps (Ballast), AC General Use, AC Incandescent Lamps (Tungsten), AC Motor Starting, AC Resistance, Across the Line, Heaters and Reactive Loads, High Inrush Motors, Power Supplies, Transformers, UL508 Application. Mounting Style: DIN Rail Mount. Terminal Contact Type: Box Clamp, Ring Tongue Terminal. Break Time: Time Delay. Special Features: IP20 Terminal Protection. Circuit Breaker Type: MCCB. Tripping Characteristics: Type D. Tripping Mechanism: Thermal-Magnetic. MPN: 3D3UM