Siemens Auxiliary Switch Module - 1NC + 1NO
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eBayAuxilary contact block Siemens 3RH2911-1HA11 3RH29111HA11
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Product Information
Full details
This Siemens Auxiliary Switch Module (MPN: 3RH2911-1HA11) is for industrial automation professionals seeking to expand the control and indication capabilities of Siemens contactors. Its key benefit is providing one normally closed (NC) and one normally open (NO) contact for versatile signaling. A minor caveat is its specific compatibility with Siemens Sirius Innovation 3RH2 series contactors.
All features
| Series | Sirius Innovation 3RH2 |
|---|---|
| Model Part Number | 3RH2911-1HA11 |
| Brand | Siemens |
Extended Product Information
FAQs
What is the primary function of this auxiliary switch module?
Its primary function is to expand the control and signaling capabilities of a Siemens contactor by adding one normally closed (NC) and one normally open (NO) contact.
What is the voltage and current rating for the contacts?
The contacts are rated for 250 V dc and 690 V ac, with a contact current rating of 6 A dc and 10 A ac.
How is this module mounted?
It is designed for front-side mounting directly onto compatible Siemens contactors.
Can I use this module with any Siemens contactor?
No, this module is specifically designed for the Siemens Sirius Innovation 3RH2 series contactors.
What is the operating temperature range?
The module operates reliably within a temperature range of -25°C to +60°C.
How many NC and NO contacts does this specific module provide?
This module provides one normally closed (NC) and one normally open (NO) contact.
Troubleshooting
Module not providing correct NC/NO signal
Verify wiring connections against the circuit diagram. Ensure the module is correctly seated on the contactor. Check if the contactor is properly energized/de-energized.
Module fails to make or break contact
Ensure the contactor it's attached to is functioning correctly. Check for any physical obstructions or damage to the module's contacts. Confirm the connected load is within the module's voltage and current ratings.
Module does not attach to contactor
Confirm you are using a compatible Siemens Sirius Innovation 3RH2 series contactor. Ensure no foreign material is blocking the mounting interface.
Pros and Cons
Pros
- Enhances control system flexibility by adding signaling contacts.
- Easy installation with front-side mounting and screw terminals.
- Robust build suitable for demanding industrial conditions.
- Compatible with Siemens Sirius 3RH2 contactors for system integration.
- Provides reliable switching for control circuits.
Cons
- Limited to one NC and one NO contact, may require multiple modules for complex logic.
- Primarily designed for Siemens Sirius 3RH2 contactors; may not be compatible with other brands or series.
- Requires manual wiring and connection.
Setup, Compatibility & Care
Setup: Mount the auxiliary switch module directly onto the front of a compatible Siemens Sirius Innovation 3RH2 series contactor. Ensure the contactor is de-energized before installation. Connect the control and signaling wires to the designated screw terminals for the NC and NO contacts as per your circuit diagram.
Compatibility: This module is designed specifically for Siemens Sirius Innovation 3RH2 series contactors. Verify the contactor model compatibility before purchase. It is not intended for use with contactors from other manufacturers or different Siemens series.
Care: Keep the module clean and free from dust and debris. Periodically check electrical connections for tightness. Avoid exposing the module to excessive moisture or corrosive environments.