Its breaking capacity reaches 187 kA at 240 VAC, dropping to 121 kA at 415 VAC and 75.6 kA at 440 VAC — figures that govern selectivity coordination with downstream breakers. Rated current holds at 40 A from 40 °C through 50 °C ambient, then derates gradually: 39 A at 55–60 °C, 38 A at 65 °C, and 37 A at 70 °C. Power dissipation at rated load is 13.3 W — a figure to include in enclosure thermal calculations when grouping several breakers.
Integration — Panel Fit and Wiring Notes
Dimensions are 130 mm high, 76.2 mm wide (3 inches), and 70 mm deep. The breaker accepts screw-clamp terminals for cable or busbar connection; the UVR coil terminals are separate and polarity-sensitive if DC-supplied. Mounting is screw-fixed to a mounting plate or DIN rail adapter (not included).