Rated at 1000 A continuously at 40 °C, it holds that rating through 50 °C before derating to 960 A at 55 °C and 900 A at 70 °C — the full thermal curve matters when the breaker sits in a warm enclosure alongside other heat sources. Interrupting capacity reaches 187 kA at 240 V, 121 kA at 415 V, 75.6 kA at 500 V, and 52.5 kA at 690 V, giving selectivity headroom for high-fault utility feeds or transformer secondaries.
Key Ratings & Fit
The TM240 release means the thermal pickup is fixed at 1000 A (the breaker frame rating), with magnetic trip set at 2400 A (2.4× In). That magnetic threshold suits motor-starting inrush or transformer energization where a lower magnetic setting would nuisance-trip. The undervoltage release drops the breaker when control voltage falls below a threshold — specify the coil voltage separately; it is not included in this order code.
Dimensions: 320 mm height, 210 mm width, 120 mm depth. The 3-pole footprint is standard for SENTRON 3VA frame sizes in this rating class. Mounts via the rear panel or a DIN-rail adapter (not included). The undervolture release wiring terminates at the breaker's auxiliary terminal block — confirm polarity and voltage rating against the coil spec before panel wiring.