SIEMENS
A front-mounted auxiliary switch block designed for SIRIUS contactor relays. It features a 2 NO + 2 NC contact configuration with high-reliability spring-loaded terminals and physical coding for specific 3RH2 series compatibility.
The Siemens 3RH2911-2GA22 auxiliary switch is a critical expansion component for industrial control systems. Part of the renowned SIRIUS modular system, this block allows for the easy expansion of auxiliary contacts on the front of your contactor.
Specifically engineered for precision and safety, it features physical coding to ensure it is only combined with compatible 3RH2140 and 3RH2440 contactor relays, adhering strictly to EN 50011 standards for terminal marking and identification.
Tool-Free Wiring: Equipped with spring-loaded terminals, allowing for fast, vibration-proof, and maintenance-free connections.
Error-Proof Installation: The physical coding mechanism prevents incorrect mounting, ensuring the safety and integrity of your control circuit.
Space-Saving Design: Front-mounting capability allows you to expand your system's functionality without increasing the footprint on the DIN rail.
High Reliability: Built to Siemens’ rigorous industrial standards, providing long electrical and mechanical service life even in demanding environments.
The Siemens 3RH2911-2GA22 is ideal for:
Expanding feedback signals in motor control centers.
Interlocking circuits in automation panels.
Signaling and status monitoring in industrial processing plants.
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| SKU / Model | 3RH2911-2GA22 |
|---|---|
| Brand | SIEMENS |
| product brand name | SIRIUS |
| suitability for use | Contactor relay |
| protection class IP on the front | IP20 |
| ambient temperature | - |
| ● during storage | -55 ... +80 °C |
| ● during operation | -25 ... +60 °C |
| mechanical service life (switching cycles) typical | 10 000 000 |
| electrical endurance (switching cycles) at AC-15 at 230 V typical | 200 000 |
| contact reliability of auxiliary contacts | 1 faulty switching per 100 million (17 V, 1 mA) |
| insulation voltage with degree of pollution 3 at AC rated value | 690 V |
| surge voltage resistance rated value | 6 kV |
| number of NC contacts for auxiliary contacts | - |
| ● lagging switching | 0 |
| number of NO contacts for auxiliary contacts | - |
| ● instantaneous contact | 2 |
| ● leading contact | 0 |
| operational current of auxiliary contacts at AC-12 | - |
| ● at 24 V | 10 A |
| ● at 230 V | 10 A |
| ● maximum | 10 A |
| ● of auxiliary contacts | - |
| — at AC-14 | - |
| — at 125 V | 6 A |
| — at 250 V | 6 A |
| — at AC-15 | - |
| — at 230 V | 6 A |
| — at 400 V | 3 A |
| ● at AC-15 at 690 V rated value | 1 A |
| ● of auxiliary contacts at DC-12 | - |
| ● with 2 current paths in series at DC-12 | - |
| ● with 3 current paths in series at DC-12 | - |
| operational current | - |
| ● of auxiliary contacts at DC-13 | - |
| — at 24 V | 6 A |
| — at 60 V | 2 A |
| — at 110 V | 1 A |
| — at 220 V | 0.3 A |
| ● with 2 current paths in series at DC-13 | - |
| ● with 3 current paths in series at DC-13 | - |
| — at 24 V rated value | 10 A |
| — at 60 V rated value | 4.7 A |
| — at 110 V rated value | 3 A |
| — at 220 V rated value | 1.2 A |
| — at 440 V rated value | 0.5 A |
| — at 600 V rated value | 0.26 A |
| fastening method | snap-on mounting |
| type of electrical connection for auxiliary and control circuit | spring-loaded terminals |
| type of connectable conductor cross-sections | - |
| ● for auxiliary contacts | - |
| — finely stranded | - |
| — with core end processing | 2x (0.5 ... 1.5 mm²) |
| — without core end processing | 2x (0.5 ... 2.5 mm²) |
| ● at AWG cables for auxiliary contacts | 2x (20 ... 14) |
| product function mirror contact acc. to IEC 60947-4-1 | No |
| product function positively driven operation acc. to IEC 60947-5-1 | Yes |
| ● note | with 3RH2 |
| last modified: | 12/21/2020 |
| Weight | 0.049 kg |
| Dimensions | 52.00 × 61.00 × 50.00 mm |
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