MCCB for line protection — 125 A, 3-pole, TM240 release
The TM240 thermal-magnetic overcurrent release handles overloads and short circuits up to 220 kA at 240 V — enough for high-fault-capacity commercial or industrial feeders.
Breaking capacity across voltage levels
Rated short-circuit breaking capacity drops as line voltage rises: 220 kA at 240 V, 154 kA at 415 V, 75.6 kA at 440 V, and 17 kA at both 500 V and 690 V.
Current derating above 55 °C
Rated current holds at 125 A from 40 °C through 50 °C, then derates: 122 A at 55 °C, 120 A at 60 °C, 117 A at 65 °C, and 114 A at 70 °C.
