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Siemens 3RF3125-1AA42 — Solid State Relays

Siemens 3RF3125-1AA42 SIRIUS Solid-State Relay, 25 A, 22.5 m

MPN3RF3125-1AA42
Active

Siemens SIRIUS 3RF31 solid-state relay, 1-pole, 22.5 mm width, 25 A, 24-230 V / 4-30 V DC, screw terminal.

Siemens 3RF3125-1AA42 datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

3RF3125-1AA42 — 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 3RF3125-1AA42 is a 1-pole semiconductor relay from the SIRIUS 3RF31 family, packing 25 A switching capacity into a 22.5 mm wide housing with screw terminals. It handles a control voltage range of 24-230 V AC/DC on the coil side and 4-30 V DC on the load side, making it a straight swap for a contactor in applications where you want silent, bounce-free switching and no coil wear.

RoHS compliant since 15 January 2024, with a REACH Article 33 notification for lead (CAS 7439-92-1) above 0.1% w/w. The export control classification is AL: N / ECCN: N, so no special licensing hurdles for cross-border sourcing. Quality and doc control will want that RoHS date on the declaration of conformity.

Frequently asked questions

What compliance documentation is available for this relay?

RoHS compliance is confirmed since 15 January 2024, and the part carries a REACH Article 33 notification for lead content above 0.1% w/w. Export controls are AL: N / ECCN: N.

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

The group code is R711 and the product group is 3725.

What are the key specs for the 3RF3125-1AA42?

It is a 1-pole semiconductor relay rated for 25 A, with a control voltage of 24-230 V AC/DC and a load voltage of 4-30 V DC. The housing is 22.5 mm wide with screw terminals.

MPN
3RF3125-1AA42