It switches a 5.5 kW motor at 400 V under AC-3 duty — that's the standard squirrel-cage induction motor start/stop cycle, not resistive heating. The coil pulls 24 VAC at 50 or 60 Hz, drawing 0.25 A at both frequencies. That's a standard control voltage for panels with a control transformer. The pickup and dropout times — 7 to 13 ms make and 10 to 15 ms arcing — are typical for this class; the contactor is fast enough for most sequencing but not a high-speed application.
The 45 mm width is one standard module — it takes up a single slot in a panel layout. That's useful when the gland plate or busbar layout forces an odd angle. That's tight enough for a crowded enclosure but leaves room for finger-safe wiring duct.
Terminals and wiring
Screw-type terminals on both the main current circuit and the magnet coil. The main contacts accept 2x (0.5 to 1.5 mm²) solid, 2x (0.75 to 2.5 mm²) solid, or 2x 4 mm² stranded. That covers the common motor cable sizes up to about 2.5 mm² for the power feed. The auxiliary switch terminals take the same range. No spring-cage option on this variant — if you prefer push-in, look at the 3RT2...-1A...0 series.