63 A MCCB with TM210 release — line protection for distribution panels
The 3-pole frame carries 52.5 kA breaking capacity at 240 V AC, stepping down to 32 kA at 415 V and 13.6 kA at 440 V, so it coordinates with downstream branch breakers across a range of fault levels.
At 415 V (common in European distribution) it drops to 32 kA, still enough for most transformer-fed secondary panels. The 63 A rating holds flat from 40 °C to 50 °C, then derates gradually: 62 A at 55 °C, 61 A at 60 °C, 60 A at 65 °C, 58 A at 70 °C. If your enclosure ambient runs above 50 °C, size the breaker one frame up or account for the 5 A loss at 70 °C. The rated insulation voltage of 800 V gives headroom for 690 V systems — the 7.5 kA at 690 V confirms it interrupts there too.
The breaker measures 130 mm high, 76.2 mm wide, and 70 mm deep — a standard 3-pole MCCB footprint for DIN-rail or screw-mount panels.