SIEMENS
Siemens 3SU1950-0FA80-0AA0 Sealing Plug 22mm Metal, Shiny Silver Original Brand New
3SU1950-0FA80-0AA0
Original price was: $5.65.$2.29Current price is: $2.29.
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SIEMENS
Siemens 3RH2921-1DA11 Auxiliary Switch, Lateral, 1 NO + 1 NC Original Brand New
Model / SKU3RH2921-1DA11
Siemens lateral auxiliary switch with 1 NO + 1 NC contacts, designed for reliable operation with 3RT2 contactors and 3RH2 contactor relays. Screw terminal connections ensure easy installation.
Original price was: $26.83.$10.87Current price is: $10.87.
In stockShips in 1–3 business days
- ConditionOriginal Brand New
- Warranty12 months
- Genuine Products
- Up to 1-Year Warranty
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Description
Overview
The Siemens 3RH2921-1DA11 is a lateral auxiliary switch engineered for seamless integration with Siemens contactors and contactor relays. Equipped with 1 normally open (NO) and 1 normally closed (NC) contact, it provides dependable signaling and control in industrial automation applications. The switch features clearly labeled left-side (51/52, 63/64) and right-side (31/32, 43/44) terminals and durable screw terminal connections for secure wiring.
Key Benefit
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Enhanced Control: Adds crucial signalling and interlocking capabilities to your control system, improving safety and automation complexity.
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Reliability: Manufactured by Siemens, guaranteeing consistent performance and long service life in demanding industrial environments.
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Easy Installation: The lateral snap-on mechanism allows for quick and tool-free mounting on compatible devices.
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Versatility: Suitable for a wide range of applications, including status indication, safety interlocks, and control circuit feedback.
Function
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Auxiliary signaling in motor starters and control circuits.
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Monitors the position of main contacts for automation systems.
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Provides 1 NO + 1 NC current path for flexible control configurations.
Technical Specification
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Type: Auxiliary switch, lateral
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Contacts: 1 NO + 1 NC
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Left terminals: 51/52, 63/64
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Right terminals: 31/32, 43/44
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Current path: 1 NC, 1 NO
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Connection: Screw terminal
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Compatible with: Siemens 3RT2 contactors and 3RH2 contactor relays
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Specifications
| SKU / Model | 3RH2921-1DA11 |
|---|---|
| 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 | screw-type terminals |
| type of connectable conductor cross-sections | - |
| ● for auxiliary contacts | - |
| — finely stranded | - |
| — with core end processing | 2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²) |
| ● at AWG cables for auxiliary contacts | 2x (20 ... 16), 2x (18 ... 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 |
| Weight | 0.040 kg |
| Dimensions | 60.00 × 70.00 × 20.00 mm |
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