Its TM220 thermal-magnetic release handles overload and short-circuit faults without an external trip unit — a fixed, non-interchangeable release that keeps the footprint tight.
Breaking capacity and voltage rating
Breaking capacity is what drives the panel fit for this MCCB. At 240 V it interrupts 220 kA — a very high figure that suits it for large transformer-fed switchboards or high-fault industrial services. Above 500 V the rating steps down to 17 kA, same at 690 V, so on 480/277 V or 600 V systems confirm the available fault current against the 500 V / 690 V column.
Thermal derating and enclosure integration
Above that it steps down: 78 A at 55 °C, 77 A at 60 °C, 75 A at 65 °C, 74 A at 70 °C. Maximum power loss is 19.2 W, which matters for thermal rise in a multi-breaker lineup. The unit measures 130 mm high, 76.2 mm wide, 70 mm deep — a standard 3-pole MCCB footprint that fits most DIN-rail or panel-mount assemblies. Front IP40 protects against tool entry; the body is not sealed for washdown.