Breaking capacity — what it means for panel coordination
At 415 V the 121 kA still covers most industrial main switchboards.
Thermal-magnetic release and derating curve
TM240 release means the thermal element is calibrated for a 25 A continuous load at 40 °C ambient. The current rating holds flat at 25 A from 40 °C to 50 °C, then drops to 24 A at 55–60 °C, and 23 A at 65–70 °C.
Undervoltage release and line protection design
The product design is explicitly line protection, not motor protection, so the TM240 curve is sized for cable and busbar protection, not motor thermal overload. If you are replacing a motor-circuit protector, check the trip curve against your motor's locked-rotor time.
Physical fit — DIN-rail and panel layout
Width 76.2 mm (3 inches), depth 70 mm, height 130 mm.