Siemens SIRIUS 3RQ1 are coupling relays with force-guided contacts for coupling to and from safety-related control systems. Versions certified up to SIL2/PL c or SIL3/PL e according to IEC 62061 / ISO 13849-1 are available in 17.5 and 22.5 mm widths with screw or spring-loaded (push-in) terminals.
Technical data
| Width | 17.5 mm or 22.5 mm |
|---|---|
| Safety level | SIL2 / PL c or SIL3 / PL e (IEC 62061 / ISO 13849-1) |
| Control supply voltage | 24 V DC or 24–240 V AC/DC |
| Thermal current of contact blocks | max. 5 A |
| Mechanical endurance | 10,000,000 operating cycles (typical) |
| Ambient temperature | Operation −25…+60 °C, storage −40…+80 °C |
| Degree of protection | IP20 |
| Approvals | UL, TÜV |
Article numbers
| Width | Safety | Uc AC | Uc DC | NO | NC | Depth (mm) | 3ZY12 device connector | PCB protective coating | Screw | Spring-loaded (push-in) |
|---|---|---|---|---|---|---|---|---|---|---|
| 17.5 mm | SIL2 / PL c | — | 24 V DC | 1 | 1 | 120 | Yes | No | 3RQ1000-1EB00 | 3RQ1000-2EB00 |
| 17.5 mm | SIL2 / PL c | — | 24 V DC | 2 | 1 | 120 | Yes | No | 3RQ1000-1GB00 | 3RQ1000-2GB00 |
| 17.5 mm | SIL2 / PL c | 24–240 V AC | 24–240 V DC | 1 | 1 | 90 | No | No | 3RQ1000-1EW00 | 3RQ1000-2EW00 |
| 17.5 mm | SIL2 / PL c | 24–240 V AC | 24–240 V DC | 2 | 1 | 90 | No | No | 3RQ1000-1GW00 | 3RQ1000-2GW00 |
| 17.5 mm | SIL3 / PL e | — | 24 V DC | 1 | 0 (1 NC feedback) | 120 | Yes | No | 3RQ1200-1EB00 | 3RQ1200-2EB00 |
| 17.5 mm | SIL3 / PL e | 24–240 V AC | 24–240 V DC | 1 | 1 | 90 | No | No | 3RQ1200-1EW00 | 3RQ1200-2EW00 |
| 22.5 mm | SIL2 / PL c | — | 24 V DC | 2 | 2 | 120 | Yes | No | 3RQ1000-1HB00 | 3RQ1000-2HB00 |
| 22.5 mm | SIL2 / PL c | — | 24 V DC | 4 | 1 | 120 | Yes | No | 3RQ1000-1LB00 | 3RQ1000-2LB00 |
| 22.5 mm | SIL2 / PL c | 24–240 V AC | 24–240 V DC | 2 | 2 | 90 | No | No | 3RQ1000-1HW00 | 3RQ1000-2HW00 |
| 22.5 mm | SIL2 / PL c | 24–240 V AC | 24–240 V DC | 2 | 2 | 90 | No | Yes | – | 3RQ1000-2HW00-0AX0 |
| 22.5 mm | SIL2 / PL c | 24–240 V AC | 24–240 V DC | 4 | 1 | 90 | No | No | 3RQ1000-1LW00 | 3RQ1000-2LW00 |
Technical data and article numbers are based on Siemens catalog IC 10 · 2026 (chapter 5, contactor relays and relays) and are for information only. Image is representative.
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