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Siemens 3RF3125-1AA02 — Solid State Relays

Siemens 3RF3125-1AA02 SIRIUS 3RF31 Solid-State Relay, 25 A

MPN3RF3125-1AA02
Active

Siemens SIRIUS 3RF31 solid-state relay, 1-pole, 22.5 mm width, 25 A, 24-230 V / 24 V DC screw terminal.

Siemens 3RF3125-1AA02 datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

3RF3125-1AA02 — Specifications
ParameterValue
Group codeR711
Product group3725
Product classA: Standard product which is a stock item could be returned within the returns guidelines/period.
SeriesSIRIUS 3RF31 solid-state relays, 1-pole, 22.5 mm
Export control regulationsAL : N / ECCN : N
Compliance with the substance restrictions according to RoHS directiveSince: 15-01-24

Product details

The Siemens 3RF3125-1AA02 is a SIRIUS 3RF31 semiconductor relay, 1-pole, in a 22.5 mm wide housing. This is a solid-state relay — no moving contacts to weld or wear — so it's suited for high-cycle switching of resistive or lightly inductive loads in a control panel. The 22.5 mm width means it fits standard DIN-rail enclosures without crowding adjacent devices.

RoHS compliance is confirmed since 15-01-24, and the part carries a REACH Article 33 declaration for lead (CAS 7439-92-1) above 0.1% w/w. This matters for EU regulatory filings and end-of-life reporting on the equipment it goes into.

Integration notes

The 22.5 mm width and screw terminals are straightforward for panel wiring — strip 8-10 mm, torque to the terminal rating. The 24 V DC control side is common for PLC digital outputs; verify the sink/source polarity against your controller's output card.

Frequently asked questions

What compliance documentation is available for this relay?

RoHS compliance is confirmed since 15-01-24. The part also has a REACH Article 33 declaration for lead content above 0.1% w/w. Standard Siemens documentation (declaration of conformity, material data) is available through the supply channel.

What is the group code and product group for this part?

The group code is R711 and the product group is 3725. These are Siemens internal classification codes used for catalog and ordering system filtering.

MPN
3RF3125-1AA02