Siemens 3RH2921-2DA11 Auxiliary Switch, Lateral, 1 NO + 1 NC, Spring-Loaded Terminal Original Brand New
$13.09
High-performance lateral auxiliary switch block featuring 1 NO and 1 NC contacts. Designed for SIRIUS 3RT2 contactors and 3RH2 contactor relays, it utilizes vibration-resistant spring-loaded terminals for secure, maintenance-free connections.
Availability: In stock
Overview
The Siemens 3RH2921-2DA11 is an auxiliary switch block from the SIRIUS innovation range, designed for lateral mounting on the side of contactors. This compact unit expands the control capabilities of your motor starter setup by providing additional signaling and interlocking contacts. With its spring-loaded terminal system, it is ideal for environments prone to high vibration, ensuring constant contact pressure without the need for periodic re-tightening.
Key Features & Function
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Lateral auxiliary switch with 1 NO + 1 NC contacts
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Left contacts: 51/52, 63/64
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Right contacts: 31/32, 43/44
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Current path configuration: 1 NC, 1 NO
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Spring-loaded terminal design for fast, secure wiring
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Ideal for 3RT2 contactors and 3RH2 contactor relays
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Robust design for reliable industrial automation performance
Benefit
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Space-Efficient Design: Lateral mounting allows for expansion without increasing the depth of the control cabinet.
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Vibration Resistance: Spring-loaded terminals provide a “gas-tight” connection that is superior to screw terminals in high-movement applications.
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Versatile Compatibility: Seamlessly integrates with the entire Siemens 3RT2 and 3RH2 product families.
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High Reliability: Built to industrial standards for long mechanical and electrical service life.
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| Weight | 0.049 kg |
|---|---|
| Dimensions | 68.00 × 70.00 × 20.00 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 | 1 |
| ● 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 |
| ● note | with 3RT2 |
| product function positively driven operation acc. to IEC 60947-5-1 | No |
| Test Certificates | Marine / Shipping |
| Special Test Certificate | Type Test Certificates/Test Report |
| last modified: | 1/18/2021 |
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