3SK1211-1CB42
Siemens Safety Relay Expansion Module 3SK1211-1CB42
Siemens
Siemens Safety Relay Expansion Module 3SK1211-1CB42
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Specifications
| Brand | Siemens |
|---|---|
| Model Number | 3SK1211-1CB42 |
| Official Product Name | SIRIUS 3SK1 Safety Relay Output Expansion Module |
| Applicable System | Machine Safety / Emergency Stop |
| Product Type | Safety Relay Expansion Module |
| Equivalent Standard | Contact us for cross-reference and alternative models |
| Product Status | Available |
| Product Family | SIRIUS 3SK1 |
| Supply Voltage | 24 V DC |
| Function | Safety relay output expansion module |
| Weight | 0.292 kg |
| Dimensions (HxWxD) | 109 x 36 x 152 mm |
| Mounting | DIN rail |
| Country of Origin | Germany |
| Material | Contact us for exact specifications |
| Warranty | Contact us for warranty terms |
Product Description
It is supplied from 24 V DC and provides additional force-guided, safety-rated contacts for emergency-stop and protective-door circuits. Housed in a compact 22.5 mm wide DIN-rail enclosure, the module extends a 3SK1 base unit without requiring additional configuration software, making it a straightforward way to scale a machine safety system. The contacts are suitable for safely switching actuators such as contactors, relays and valves in safety-relevant applications. This module is a genuine Siemens spare for SIRIUS 3SK1 safety relay assemblies. Confirm the exact 3SK1 base configuration and contact requirement before ordering; contact our parts team for cross-reference and availability. The Siemens 3SK1211-1CB42 is a SIRIUS 3SK1 safety relay output expansion module used to increase the number of safe output contacts in a 3SK1 safety relay configuration.
Basic Product Information
- Operates on 24 V DC control supply.
- Adds safety-rated, force-guided output contacts to a 3SK1 base unit.
- Compact 22.5 mm wide DIN-rail housing for space-saving panels.
- Suitable for emergency-stop, guard and protective-door safety circuits.
- Genuine Siemens spare part with verified stock.
- Expansion module for Siemens SIRIUS 3SK1 safety relay systems.
Technical Specifications
Version & Model Difference
The 3SK1211-1CB42 is the 24 V DC output expansion variant of the SIRIUS 3SK1 safety relay family. Other 3SK1 variants differ in supply voltage, contact count and base/expansion configuration. Verify the exact base unit and required output contacts when selecting a replacement.
Application Scenarios
- Expansion of emergency-stop (E-Stop) safety relay circuits.
- Protective door and guard monitoring with additional safe outputs.
- Machine safety systems built on SIRIUS 3SK1 platforms.
- It uses a standard DIN-rail mounting in a compact 22.5 mm wide housing (approx. 109 x 36 x 152 mm, 0.292 kg).
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Frequently Asked Questions
What is the Siemens 3SK1211-1CB42?
It is a SIRIUS 3SK1 safety relay output expansion module that adds safety-rated output contacts to a 3SK1 base unit. It operates on 24 V DC and is used to scale emergency-stop and guard monitoring circuits.
What voltage does it use?
The module is supplied from 24 V DC. Confirm the supply polarity and rating of the associated 3SK1 base unit before installation.
How is it mounted?
It uses a standard DIN-rail mounting in a compact 22.5 mm wide housing (approx. 109 x 36 x 152 mm, 0.292 kg).
Is this a current production part?
It is a genuine Siemens SIRIUS 3SK1 spare. Availability and cross-references vary; contact our parts team for stock and quotation.
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