Siemens 3RA2921-1AA00 (SIRIUS 3RA2 link modules): Link module for screw terminal electrical and mechanical for 3RV2.1/3RV2.2, and 3RT2.2. AC operation.
Link modules connect a 3RV2 motor starter protector mechanically and electrically to a 3RT2 contactor to form a compact load feeder.
See our Siemens range.
Technical data
| Siemens order number | 3RA2921-1AA00 |
|---|---|
| Product type designation | 3RA29 |
| Weight, approx. | 0.033 kg |
| Product category | Wiring modules, connectors and kits |
| Product designation | link module |
| Design of the product | actuating voltage contactor: AC |
| Size of the circuit-breaker | S00, S0 |
| Size of contactor | S0 |
| Net Weight | 32.58 g |
| Number of poles | 3 |
| Fastening method | screw fixing |
| Environment | General Product Approval; Test Certificates |
| Firmations | ate |
| Other | Railway |
| Confirmation ate | Confirmation; Special Test Certific- |
| Last modified: | 4/2/2025 |
| Condition | New, original Siemens |
Typical applications
- Fuseless load feeders
- Compact motor starters
Compatibility and replacement
Check the sizes of breaker and contactor.
Replacement checklist
- Check the supply voltage and wiring of the old unit before installing the new one.
- Note the firmware version printed on the old unit; TIA Portal or LOGO! Soft Comfort must support it.
- Compare the full order number 3RA2921-1AA00 with the label on the old unit, including the last digits (they identify the version).
Frequently asked questions
What does it connect?
A 3RV2 breaker to a 3RT2 contactor of the matching size, per Siemens.
Is it new and original?
Yes. We supply new, original parts in the manufacturer packaging, with a 1-year warranty.
Can I get a datasheet?
The official manufacturer datasheet is the source of the technical data above; we can send the PDF with the quotation on request.
Do you ship to my country, and what is the warranty?
Yes. RendatSP ships worldwide from Yiwu, China, by air in 5 to 7 days once the part is ready, and every part carries a 1-year warranty. Send the order number and quantity on WhatsApp and we will reply with a quotation.
Ordering tips
Send us the full order number from the label of the old part, or a clear photo of the label, together with the quantity you need. We check the number against the current manufacturer data before we quote and tell you if there is a newer replacement.
RendatSP ships from Yiwu, China, to factories worldwide; air delivery usually takes 5 to 7 days once the part is ready. The part is new and original with a 1-year warranty (shipping, payment and warranty). For a quotation, message us on WhatsApp with the order number and quantity. We also have agents in Saudi Arabia, Iraq, the UAE, Egypt, Oman, Libya, Morocco, Mauritania, Yemen, Algeria and Jordan.
