It carries a continuous current rating of 50 A at 40 °C through 50 °C, derating to 45 A at 70 °C, so the thermal curve governs real-world panel loading — not just the nameplate number. The TM240 overcurrent release combines a thermal bimetal for overload protection and a magnetic coil for short-circuit response, set for a 240 A magnetic trip threshold.
Breaking capacity — what the voltage columns mean
This 3-pole MCCB delivers 187 kA interrupting capacity at 240 V, 121 kA at 415 V, 75.6 kA at 440 V, and 17 kA at both 500 V and 690 V. The steep drop above 440 V is typical for a frame this size — at 690 V the available fault current must stay under 17 kA or you step up to a larger frame.
Footprint is 76.2 mm wide, 130 mm tall, 70 mm deep — standard SENTRON 3VA1 frame dimensions.