Siemens 3RH2911-1DA11 Auxiliary Switch Lateral 1NO + 1NC for 3RT2.1 Contactors Original Brand New
$12.76
Siemens lateral auxiliary switch block featuring a 1 NO and 1 NC contact configuration with secure screw terminals. It is specifically designed for quick and easy side-mounting onto 3RT2.1 contactors, providing essential control paths (e.g., 41/42, 53/54 on the left; 21/22, 33/34 on the right) for industrial control and feedback circuits.
Availability: In stock
Overview
The Siemens 3RH2911-1DA11 auxiliary switch is a vital component for extending the functionality of your 3RT2.1 series contactors. This robust, lateral (side-mounted) auxiliary switch block provides the necessary feedback and control paths required in complex industrial automation and motor control circuits.
Featuring a reliable 1 Normally Open (NO) and 1 Normally Closed (NC) configuration, this accessory ensures precise signaling of the contactor’s status. Its screw terminal design guarantees a secure and straightforward electrical connection, saving time during installation and maintenance. Upgrade your control system reliability with this genuine Siemens accessory.
Benefit
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Enhanced Circuit Visibility: Provides immediate, reliable signaling (1 NO and 1 NC) of the contactor’s switching status, essential for interlocking and PLC inputs.
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Seamless Compatibility: Specifically designed for the Siemens 3RT2.1 contactor line, ensuring a perfect fit and dependable mechanical operation.
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Durable Connections: High-quality screw terminals offer a secure, vibration-resistant connection for long-term operational integrity in demanding industrial environments.
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Flexible Mounting: Lateral mounting allows for stacking multiple auxiliary blocks or accommodating other front-mounted accessories like surge suppressors.
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Genuine Siemens Quality: Manufactured to the highest standards, guaranteeing reliability and longevity for critical control applications.
Function
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Provides additional auxiliary contacts for control and signaling
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Enables monitoring of contactor status
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Supports automation logic and interlocking systems
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Enhances operational safety and system efficiency
Technical Specification
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Product Number: 3RH2911-1DA11
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Contact Configuration: 1 NO + 1 NC
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Mounting Type: Lateral
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Left Side Terminals: 41/42, 53/54
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Right Side Terminals: 21/22, 33/34
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Current Path: 1 NC, 1 NO
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Terminal Type: Screw terminal
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Compatible Contactors: Siemens 3RT2.1 series
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| Weight | 0.040 kg |
|---|---|
| Dimensions | 60.00 × 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 | 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 |
| Functional Safety/Safety of Machinery | Marine / Shipping Test Certificates |
| last modified: | 12/21/2020 |
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