What this 2-pole C-curve MCB does for your panel
Rated 400 V AC (single- or multi-phase) and 440 V DC, with a maximum DC operating voltage of 500 V. Breaking capacity hits 10 kA per IEC/EN 60898-2 and UL 1077, and 15 kA per IEC 60947-2 at DC — enough to clear a hard fault on a 400 V distribution board without cascading upstream. The dual-standard listing (IEC 60898-2 plus UL 1077) means this part is accepted in both European and North American panels, though UL 1077 is a supplementary protector, not a branch-circuit breaker — check your local code for the distinction.
DIN-rail fit and panel integration
Environmental and compliance specs
Ambient temperature range spans -40 °C to +75 °C, with derating above 55 °C: max 95% RH at 55 °C, tapering to 35% RH at 75 °C. Vibration resistance per IEC 60068-2-6 (±1 mm at 5–25 Hz, 50 m/s² at 25–150 Hz) means it holds up on a machine-mounted sub-panel near a press or conveyor drive.