Capacitor switching contactor for power factor correction banks
Unlike a standard contactor, a capacitor contactor includes pre-charge resistors to limit inrush current when energising a discharged capacitor bank. The 3RT2625-1AB05 handles the high peak currents without welding its main contacts, provided the capacitor bank capacitance does not exceed the manufacturer's recommended value for the S0 frame.
Mounting and terminal details for panel integration
The 1×6 mm² at 40 °C and 1×10 mm² / 2×6 mm² at 60 °C ratings give the wireman a clear derating table for the power circuit.
Switching performance and operating limits
The arcing time is a tight 10–10 ms, and the closing time at AC is 4–16 ms — consistent with the SIRIUS capacitor contactor family's fast make/break characteristic. Auxiliary contact configuration: one instantaneous contact (NO or NC depending on variant) — the 3RT2625-1AB05 ships with a single auxiliary block as standard.
Lifecycle and sourcing for the BOM line
No stock-holding claim is made; the supply posture is RFQ-grounded.