What this MCCB delivers
It carries a continuous current rating of 160 A at 40 °C, with thermal derating to 150 A at 70 °C — so the full 160 A holds across typical panel ambient temperatures up to 50 °C, and only drops 5 A by 60 °C. That thermal curve matters when you're packing breakers into a confined enclosure. The TM240 overcurrent release combines a thermal-magnetic trip with a fixed 240 A magnetic pickup. This is a line-protection device, not a motor-protective breaker — it's sized for cable and busbar protection, not overload relay curves. The 4-pole configuration suits three-phase plus neutral or switched-neutral applications.
Rated short-circuit breaking capacity (Icu) is 75.6 kA at 240 V AC, 52.5 kA at 415 V, 32 kA at 440 V, and 11.9 kA at both 500 V and 690 V. At typical 400 V class distribution voltages, the 52.5 kA rating covers most industrial service-entrance and sub-distribution fault levels.
Width at 101.6 mm is standard for a 4-pole MCCB in this class — verify the mounting centres match your existing busbar or DIN-rail adapter before committing the BOM line. Maximum power loss is 38 W. In a sealed, non-ventilated enclosure with multiple breakers, that heat adds up — factor it into your thermal calculation if the panel is densely populated.