Its TM210 thermal-magnetic overcurrent release handles overloads and short-circuits without external trip units. The interrupting capacity hits 121 kA at 240 VAC and 75.6 kA at 415 VAC — enough for high-fault utility feeds or transformer secondaries where SCCR headroom matters. The UVR is part of the auxiliary release design, not a field-added accessory.
Current derating and ambient limits
Above that, derating is gradual: 78 A at 55 °C, 77 A at 60 °C, 75 A at 65 °C, and 74 A at 70 °C. If the panel sits in a hot machine room or near a furnace line, the 70 °C ceiling with 74 A continuous is the real limit.
Interrupting capacity by voltage
Breaking capacity drops as system voltage rises: 121 kA at 240 V, 75.6 kA at 415 V, 52.5 kA at 440 V, and 11.9 kA at both 500 V and 690 V. At 480 V systems (common in North America) the 52.5 kA at 440 V is the closest published figure — expect similar or slightly lower at 480 V. For 690 V wind or solar applications, the 11.9 kA rating is the ceiling.
The 3-pole frame width (76.2 mm / 3 in) matches standard SENTRON 3VA mounting footprints. Depth of 70 mm leaves clearance behind a 200 mm deep enclosure for wiring and lug access.