Altech 12.5A 3 Pole Thermal Magnetic Circuit Breaker, 480Y/277V V-EA. Tripping Characteristics: Type Z. 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, Components which Fail-Short, Components/Devices with Low Surge Current and Short Circuit Withstand Capabilities, Semiconductors, UL508 Application. Mounting Style: DIN Rail Mount. Terminal Contact Type: Box Clamp, Ring Tongue Terminal. Break Time: Time Delay. Special Features: IP20 Terminal Protection. Tripping Mechanism: Thermal-Magnetic. Overall Depth: 74.7mm. MPN: 3Z125UM