MCCB for line protection — 80 A, 3-pole
Its TM240 thermal-magnetic release handles overload and short-circuit conditions up to 75.6 kA at 240 V and 52.5 kA at 415 V, with an insulation voltage of 800 V.
At 240 V the interrupting rating is 75.6 kA; at 415 V it drops to 52.5 kA; at 440 V it is 32 kA; and at 500 V and 690 V it holds at 11.9 kA.
The breaker carries 80 A continuously at ambient up to 50 °C. Above that, it derates: 78 A at 55 °C, 77 A at 60 °C, 75 A at 65 °C, and 74 A at 70 °C.
