The D-curve (10–20× In magnetic trip) means it holds through the start-up surge and clears only on a hard fault, so you don't chase false trips on a conveyor or compressor line. For UL 1077 / CSA C22.2 No. 235 supplementary protection, it carries a 5 kA interrupting rating — enough for secondary panel protection behind a branch-circuit fuse or larger breaker.
Depth of 76 mm (70 mm installation depth) means it clears most standard enclosure back-panels without hitting the door or rear-mounted busbars — check your gland plate clearance if the panel is shallow. The 90 mm height and 18 mm width are the standard 1-MW footprint, so it drops into any existing SENTRON or third-party distribution board without re-drilling the DIN rail. The humidity derating curve maxes at 95% RH up to 55 °C, then drops — if your panel sits near a washdown zone at 70 °C and high humidity, the 55% RH limit at that temperature applies.
Installable accessories and compliance
Rated for 50/60 Hz AC supply, single-phase up to 440 V or phase-to-phase up to 440 V. For DC applications, the maximum operating voltage is 72 V — this is not a general-purpose DC breaker for higher voltages like 125 VDC battery banks.