The TM240 thermal-magnetic release provides fixed overload pickup and magnetic trip coordination — no electronic adjustment, so it's a straight swap-in for legacy panel designs that don't need communication or ground-fault monitoring.
This MCCB delivers 121 kA at 240 V AC, 75.6 kA at 415 V, 25 kA at 440 V, and 11.9 kA at 690 V. For a 415 V distribution board fed by a transformer of 2 MVA or larger, 75.6 kA gives headroom for full selectivity with downstream 25 kA or 36 kA rated breakers, provided the upstream device's let-through energy is coordinated.
Thermal derating — how ambient temperature affects the 200 A rating
Above that, derate linearly: 194 A at 55 °C, 188 A at 60 °C, 182 A at 65 °C, and 176 A at 70 °C. If this breaker lands in a non-ventilated enclosure near transformers or busway, expect to downsize the cable or upsize the breaker frame — a 200 A feeder in a 60 °C panel effectively becomes an 188 A circuit.
Auxiliary contacts and shunt trip — what's on board
For a simple feeder breaker with remote trip capability, this is the right configuration; if you need undervoltage protection or ground-fault sensing, order a different variant.
Dimensions: 140 mm wide, 158 mm high, 70 mm deep. The 4-pole design includes a switched neutral (no N-conductor protection — the neutral pole is switched but not monitored).