The 3RB1246-1PM30: The relay mounts individually (not on a base plate) and fits the S00/S0 contactor footprint common in Siemens motor starter assemblies. The screw terminals on the auxiliary circuit accept standard ferrule or solid conductors for control wiring. The ground fault detection circuit monitors for leakage to earth and provides a monostable output signal — useful for early warning on deteriorating motor winding insulation before a hard fault occurs.
Siemens 3RB1246-1PM30 Overload Relay, 1.25-6.3 A, Discontinu
MPN3RB1246-1PM30
Siemens SIRIUS 3RB1246-1PM30 overload relay, 1.25-6.3 A, size S00/S0, Class 5-30, discontinued.
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026
Product details
Frequently asked questions
What replaces the 3RB1246-1PM30?
An official Siemens successor order code is not provided in the available records. A parametric replacement should be selected from the current SIRIUS 3RB3 series, matching the 1.25-6.3 A range, S00/S0 frame size, AC 220-240 V control voltage, and screw terminal auxiliary connections. Verify the reset mode (manual/auto/remote) and ground fault detection functionality against the specific application.
MPN
3RB1246-1PM30