Order number 3RH2122-1AP00 is a genuine Siemens part from the SIRIUS 3RH2 control relays / auxiliary switches range. Official description: contactor relay, 2 NO + 2 NC, 230 V AC, 50/60 Hz, screw terminal, frame size S00.
SIRIUS 3RH2 contactor relays and auxiliary switch blocks are used in control circuits to multiply contacts, interlock starters and interface PLC outputs with higher-power coils.
See our Siemens range.
Technical data
| Siemens order number | 3RH2122-1AP00 |
|---|---|
| Product type designation | 3RH2 |
| Ambient temperature (operation) | -25 … +60 °C |
| Dimensions (W x H x D) | 45 x 57.5 x 73 mm |
| Weight, approx. | 0.22 kg |
| Condition | New, original Siemens |
Key features (per Siemens)
- Contactor relay
- 2 NO + 2 NC
- 230 V AC
- 50/60 Hz
- Screw terminal
- Frame size S00
Typical applications
- Replacement of a worn relay or block
- Signalling and auxiliary functions on 3RT2 contactors
- Control circuits and interlocking
- Contact multiplication for PLC outputs
Compatibility and replacement
Check the coil voltage (for contactor relays) or the contactor size (for auxiliary blocks) against the old part before ordering.
Replacement checklist
- Note the firmware version printed on the old unit; TIA Portal or LOGO! Soft Comfort must support it.
- Back up the program and parameters from the old device if it still runs.
- Compare the full order number 3RH2122-1AP00 with the label on the old unit, including the last digits (they identify the version).
Frequently asked questions
What contacts does it have?
See the contact arrangement in the Siemens title and table above.
Does it fit 3RT2 contactors?
3RH29 auxiliary switch blocks fit 3RT2 contactors of the sizes listed by Siemens in the data sheet.
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 supply larger quantities for projects?
Yes. For panel builders and plant projects we quote complete lists; send the bill of materials on WhatsApp or through the inquiry form.
How fast can you deliver, and is there a warranty?
Air shipping usually takes 5 to 7 days once the part is ready, to almost any country. Each part is new and original with a 1-year warranty. Message us on WhatsApp with the order number for a quotation.
How to order
Message us the order number and quantity. For breakdowns, tell us the delivery address and we will offer the fastest shipping option. If the exact part is discontinued, we confirm the official successor before quoting.
Every part RendatSP supplies is new and original, carries a 1-year warranty and ships worldwide by air in 5 to 7 days once ready (shipping, payment and warranty). Send us the order number and quantity on WhatsApp or through the inquiry form and we will quote the same working day. Agents in Saudi Arabia, Iraq, the UAE, Egypt, Oman, Libya, Morocco, Mauritania, Yemen, Algeria and Jordan.
