Breaking capacity and voltage ratings
It also carries a multi-phase AC rating of 440 V, so it handles 400 V line-to-line systems with headroom. The DC maximum operating voltage is 72 V — relevant if the circuit includes a rectified supply or battery-backed control voltage. For purely resistive loads or long cable runs, a B-curve would trip faster; for high-inrush transformers, a D-curve would be the usual choice.
Panel fit and environmental tolerance
Installation depth is 70 mm. Mounting position is any. The operating temperature range spans -40 °C to 75 °C, with humidity derating: up to 95% relative humidity at 55 °C, tapering to 35% at 75 °C. Vibration resistance per IEC 60068-2-6 is ±1 mm at 5–25 Hz and 50 m/s² at 25–150 Hz, adequate for general industrial machinery but not for direct mounting on a high-vibration pump skid without isolation.
Compliance documentation per IEC/EN 60947-2 is the governing standard. The part is sealable — a feature for utility-metering or warranty-seal applications where tamper evidence is required.