Its 24 VDC coil draws 4.2 W during both closing and holding, so the control transformer or DC supply must be sized for that steady-state draw — no inrush spike to worry about on DC. The varistor surge suppressor is built in, meaning no external snubber needed for coil suppression.
The AC-3 motor-switching rating at 400 V is not directly stated, but the AC-2 rating at 400 V is 5.5 kW and the AC-4 rating at 400 V is 12.5 A. For a typical three-phase induction motor, the AC-3 rating would be higher than AC-2 — expect this contactor to handle a 5.5 kW motor in standard starting duty. For resistive or general-purpose loads (AC-12), the maximum operating current is 10 A. The auxiliary contact ratings span from 10 A at 24 V down to 0.3 A at 220 V and 3 A at 400 V — useful for pilot-duty circuits.
Dimensions are 45 mm wide, 88 mm high, and 100 mm deep — the S0 frame fits standard 45 mm DIN-rail spacing. Main circuit terminals accept screw-type connections: 2x (0.25 to 2.5 mm²) solid, 2x (1 to 2.5 mm²) stranded, up to 2x 10 mm² max. AWG equivalents are 2x (16 to 12) solid, 2x (14 to 10) stranded, or 1x 8. For type 2 coordination, use a gL/gG fuse rated 25 A; for type 1, 63 A. Pollution degree 3.