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Siemens 3RU6900-1A — Overload Relays

Siemens 3RU6900-1A SIRIUS Overload Relay, mechanical reset

MPN3RU6900-1A

Siemens SIRIUS 3RU6900-1A overload relay, mechanical reset, size S00 and S0, resetting plunger with holder and funnel.

Siemens 3RU6900-1A datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

3RU6900-1A — Identification
ParameterValue
Product brand nameSIRIUS
Product designationmechanical RESET
Frame size (overload relay)S00, S0
3RU6900-1A — Environmental
ParameterValue
Operating temperature-20 ... +70°C
Storage temperature-50 ... +80°C
3RU6900-1A — Other specifications
ParameterValue
Design of the productresetting plunger, holder and funnel

Product details

Mechanical reset for S00 and S0 contactors

The 3RU6900-1A is a SIRIUS overload relay with a mechanical RESET design — the resetting plunger, holder and funnel let you trip and reset the relay without powering the coil, which matters when you're troubleshooting a stalled conveyor and don't want to cycle the main contactor.

Frequently asked questions

What contactor frames does 3RU6900-1A fit?

It fits both S00 and S0 contactor frames, which covers the most common Siemens SIRIUS compact contactor sizes up to around 22 A AC-3 duty.

MPN
3RU6900-1A