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Siemens 3RF3050-1AA02 — Solid State Relays

Siemens 3RF3050-1AA02 SIRIUS 3RF30 SSR, 50 A, 24-230 VAC/24

MPN3RF3050-1AA02
Active

Siemens SIRIUS 3RF30 solid-state relay, 1-pole, 45 mm width, 50 A, 24-230 V / 24 V DC screw terminal.

Siemens 3RF3050-1AA02 datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

3RF3050-1AA02 — Specifications
ParameterValue
Group codeR711
Product group3725
Product classA: Standard product which is a stock item could be returned within the returns guidelines/period.
SeriesSIRIUS 3RF30 solid-state relays, 1-pole, 45 mm
Export control regulationsAL : N / ECCN : N
Compliance with the substance restrictions according to RoHS directiveSince: 15-01-24

Product details

What the 50 A rating means for fit

The 3RF3050-1AA02: The 50 A continuous rating is the maximum steady-state current the solid-state relay can carry through its output without exceeding the junction temperature limit. For motor loads, the inrush during start-up can be 5-7x the FLA, so this relay is sized for a motor whose full-load amps stay below 50 A — typically a 15-20 kW induction motor on 400 V three-phase, depending on duty cycle. For resistive loads (heaters, lamps), the 50 A rating is the direct selection number.

Control voltage flexibility

The control input accepts 24-230 VAC or 24 VDC, which covers the two most common PLC and relay logic levels in industrial panels. The 24 VDC option is useful for direct connection to a 24 VDC PLC output card without an interposing relay. The AC range (24-230 V) allows the same part to be used across different line voltages in a facility, reducing spare-part variety.

RoHS compliance is documented from 15 January 2024. No UL or CSA listing is stated in the available record, so verify local code acceptance with the project's electrical inspector if the installation requires third-party certification.

Frequently asked questions

What compliance documentation is available for this relay?

RoHS compliance is documented from 15 January 2024. A REACH Article 33 declaration for lead content above 0.1% w/w is also on file. No UL or CSA listing is stated in the available record.

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 cataloging codes used for cross-referencing in their SIRIUS product system.

What is the closest pin-compatible alternative in the same family?

Within the SIRIUS 3RF30 family, the 45 mm width and screw terminal format are shared across the 1-pole variants. The main selection difference is the continuous current rating — the 3RF3050-1AA02 is the 50 A variant. A lower-current sibling (e.g., 25 A or 40 A) would be pin-compatible but would limit the load capacity. No direct 50 A alternative with different control voltage exists in the same 45 mm screw-terminal format.

MPN
3RF3050-1AA02