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Siemens 3RB1246-1QB00 — Overload Relays

Siemens 3RB1246-1QB00 Overload Relay, 6.3-25 A, DC 24 V

MPN3RB1246-1QB00

Siemens SIRIUS 3RB1246-1QB00 overload relay, 6.3...25 A, size S00/S0, DC 24 V, screw terminals, class 5...30, manual-automatic-remote reset.

Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Product details

The lifecycle stage for this order code is listed as current, meaning it remains in the manufacturer's active portfolio as of the latest data.

The 6.3...25 A setting range covers IEC standard motor full-load currents for small to medium induction motors — think 2.2 kW to 11 kW at 400 V three-phase, depending on the motor's service factor. The size S00/S0 footprint matches the Siemens SIRIUS 3RT2 contactor series, so the relay clips directly onto the contactor or mounts individually on a DIN rail. Class 5...30 means the trip curve is adjustable from 5 to 30 seconds at 7.2× Ie, letting you tune for normal start versus high-inertia loads. The DC 24 V control supply is the standard for modern PLC-driven panels; verify polarity on the screw terminals before energizing.

Frequently asked questions

Where can I buy 3RB1246-1QB00?

This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time.

MPN
3RB1246-1QB00