Siemens 3RH2911-2FA22 Auxiliary Switch Block, 2 NO + 2 NC, Spring-Loaded Terminal Original Brand New
$36.12
High-reliability auxiliary switch block designed for front mounting on SIRIUS 3RT2 contactors and 3RH2 contactor relays. It features a 2 NO + 2 NC contact configuration and vibration-proof spring-loaded terminals for secure electrical connections in demanding industrial environments.
Availability: In stock
Overview
Enhance your control system’s versatility with the Siemens 3RH2911-2FA22 auxiliary switch. This front-mounting block provides additional signaling and interlocking capabilities without increasing the footprint of your contactor. As part of the Siemens SIRIUS Innovation family, it ensures seamless integration, high contact reliability, and a long mechanical service life in demanding industrial environments.
Key Benefit
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Space-Saving Design: Front-mounting allows for easy expansion without taking up additional DIN rail space.
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Vibration Resistant: The spring-loaded terminal technology ensures a secure connection even in high-vibration machinery, reducing maintenance needs.
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High Reliability: Engineered for millions of switching cycles, ensuring long-term operational stability.
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Universal Compatibility: Specifically designed for use with 3RT2 series contactors and 3RH2 contactor relays.
Function & Features
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Contact Configuration: 4-pole design (2 Normally Open + 2 Normally Closed).
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Current Paths: Precisely mapped paths (1 NO, 1 NC, 1 NC, 1 NO) for versatile logic wiring.
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Compatibility: Seamlessly fits Siemens SIRIUS Type 3RT2 (Power Contactors) and 3RH2 (Contactor Relays).
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Terminal Type: Spring-type terminals for fast, vibration-resistant wiring.
Technical Specification
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Product Brand: Siemens SIRIUS
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Model Number: 3RH2911-2FA22
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Number of Contacts: 4 (2 NO + 2 NC)
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Mounting Position: Front
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Connection Method: Spring-loaded
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Suitable for: 3RT2 Contactors / 3RH2 Relays
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| Weight | 0.064 kg |
|---|---|
| Dimensions | 55.00 × 58.00 × 48.00 mm |
| Brand | SIEMENS |
| product brand name | SIRIUS |
| suitability for use | Contactor relay and power contactor |
| 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 | Yes |
| product function positively driven operation acc. to IEC 60947-5-1 | Yes |
| ● note | with 3RH2 |
| Functional Safety/Safety of Machinery | Marine / Shipping Test Certificates |
| last modified: | 1/18/2021 |
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