The breaker carries a 121 kA breaking capacity at 240 V AC and 75.6 kA at 415 V AC, so it can safely interrupt high fault currents without upstream coordination issues in most commercial and light industrial panels.
The 40 A rating holds across 40 °C to 50 °C ambient (no derating needed up to 50 °C), then drops to 39 A at 55 °C and 37 A at 70 °C. The 121 kA at 240 V AC is the interrupting rating; at 415 V AC it's still 75.6 kA, which covers most transformer-fed secondary faults. The front panel carries IP40 protection — fine for a dry indoor panel, not for washdown areas.
Panel integration
The breaker measures 70 mm deep, 50.8 mm wide, and 130 mm high — a 2-pole footprint that fits standard DIN-rail or panel-mount enclosures. The TM210 release is fixed, so coordination studies should account for its thermal-magnetic curve.