Its interrupting capacity hits 52.5 kA at 240 V, 32 kA at 415 V, 13.6 kA at 440 V, and 7.5 kA at 690 V — so it handles fault currents across common low-voltage distribution voltages without cascading upstream. The 70 mm depth and 76.2 mm width fit standard panel-mount cutouts; the IP40 front rating means it's protected against solid objects larger than 1 mm on the operator face, suitable for enclosed switchboards.
Thermal derating — what 40 A means at elevated panel temperatures
At 55 °C it derates to 38.4 A, at 60 °C to 37.6 A, at 65 °C to 36.8 A, and at 70 °C to 36 A. That's a 10 % reduction, so size the continuous load at 36 A or less if the breaker sees 70 °C ambient.
Integrated accessories and release options
The TM210 release is thermal-magnetic, fixed, non-adjustable for short-time pickup.