Frame size S3, 230 V coil, active production
The 3RT2545-1AL20: The coil draws 0.35 VA holding power at 50 Hz and 0.41 VA at 60 Hz — a low continuous drain that keeps the control transformer lightly loaded when the contactor is sealed in.
Mounting and clearances for panel integration
At 152 mm deep, 70 mm wide, and 140 mm tall, it fits a standard S3 footprint without surprises.
Terminal capacity and auxiliary contact ratings
Main power terminals accept stranded wire from 6 mm² up to 70 mm² (single conductor), or dual conductors from 6–16 mm² and 10–50 mm². Auxiliary terminals handle solid or stranded 0.5–2.5 mm². All are screw-type — no special crimp tooling needed for field replacement. The 10 A at 24 V rating holds the unit on the grid for PLC-level pilot duty without an interposing relay.
Thermal and mechanical endurance
The arcing time at AC is 10–20 ms, and the maximum switching rate in AC-1 duty is 900 operations per hour — sufficient for most motor starting and resistive load switching.