The 3RT2316-1BF40: The AC-3 rating at 400 V is 4 kW — that's the load it handles switching a squirrel-cage motor on and off under full load. The AC-4 rating is also 4 kW at 400 V, covering plugging and inching duty. The rated operational current at 400 V is 9 A. The impulse withstand voltage for the main circuit is 6 kV, and the auxiliary circuit shares the same 6 kV rating — both match typical panel coordination levels for 400 V distribution. Mechanical endurance is 30 million operations. DC switching delay (break time) is 7 to 13 ms.
Width is 45 mm, depth 73 mm, height 58 mm. Side-by-side mounting is allowed. Terminals accept solid conductors 2x (0.5 to 1.5 mm²) and 2x (0.75 to 2.5 mm²); stranded accepts 0.5 to 4 mm². An auxiliary switch is attachable.
Relative humidity minimum is 10%. RoHS compliance date for substance prohibitance is October 1, 2009 — the part is RoHS-compliant.
This is a current-production part. No end-of-life notice or successor has been issued.