4-pole D-curve MCB for high-inrush loads
At 400 V AC (rated voltage) and 440 V AC multi-phase operation, it covers standard three-phase industrial supply. Breaking capacity is 15 kA per EN 60898 and 40 kA per IEC 60947-2, with 15 kA at DC per IEC 60947-2 and 5 kA per UL 1077 / CSA C22.2 No. 235. The 5 kA UL figure confirms suitability for North American control-panel applications under UL 508A.
DIN-rail integration and environment
Vibration resistance per IEC 60068-2-6: ±1 mm at 5–25 Hz, 50 m/s² at 25–150 Hz — adequate for machine-mounted panels on pumps or conveyors. Halogen-free and silicon-free construction, sealable (lockable) for isolation lockout/tagout.
Compliance documentation
The 5SY7403-8 carries IEC 60898 and IEC 60947-2 ratings, plus UL 1077 and CSA C22.2 No. 235 supplementary protection recognition. The SENTRON series is RoHS and REACH compliant. Standard documentation includes the EU Declaration of Conformity, manufacturer test certificates, and the product datasheet with time-current curves.