Siemens 3SK1, 24V dc Safety Relay, 4 Safety Contacts
- RS Stock No.:
- 784-5807
- Distrelec Article No.:
- 304-02-187
- Mfr. Part No.:
- 3SK1121-1CB42
- Brand:
- Siemens
Subtotal (1 unit)*
£239.95
(exc. VAT)
£287.94
(inc. VAT)
FREE delivery for orders over £60.00
Limited stock
- Plus 11 left, shipping from 20 April 2026
- Plus 1 left, shipping from 20 April 2026
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Units | Per unit |
|---|---|
| 1 + | £239.95 |
*price indicative
- RS Stock No.:
- 784-5807
- Distrelec Article No.:
- 304-02-187
- Mfr. Part No.:
- 3SK1121-1CB42
- Brand:
- Siemens
Specifications
Technical Reference
Legislation and Compliance
Product Details
Find similar products by selecting one or more attributes.
Select all | Attribute | Value |
|---|---|---|
| Brand | Siemens | |
| Product Type | Safety Relay | |
| Safety Contacts | 4 | |
| Series | 3SK1 | |
| Terminal Type | Screw | |
| IP Rating | IP20 | |
| Minimum Operating Temperature | -25°C | |
| Standards/Approvals | RoHS | |
| Maximum Operating Temperature | 60°C | |
| Width | 22.5mm | |
| Length | 100mm | |
| Height | 122mm | |
| Safety Category | 4 | |
| Hazardous Area Certification | No | |
| Coil Voltage | 24V dc | |
| Select all | ||
|---|---|---|
Brand Siemens | ||
Product Type Safety Relay | ||
Safety Contacts 4 | ||
Series 3SK1 | ||
Terminal Type Screw | ||
IP Rating IP20 | ||
Minimum Operating Temperature -25°C | ||
Standards/Approvals RoHS | ||
Maximum Operating Temperature 60°C | ||
Width 22.5mm | ||
Length 100mm | ||
Height 122mm | ||
Safety Category 4 | ||
Hazardous Area Certification No | ||
Coil Voltage 24V dc | ||
- COO (Country of Origin):
- DE
Siemens Safety Relay, Configurable Type, Integrated Potentiometer - SIRIUS Series - 3SK1121-1CB42
For maximum workplace safety with minimum hassle, try this single-channel relay from Siemens. It monitors your industrial processes and helps prevent dangerous situations when it finds an error. Important functions like emergency stop switches and protective door monitors are quick and easy to set up without programming and without compromising on performance. For flexibility, the four safety contacts include two instantaneous enabling circuits and two time-delayed enabling circuits. This means you can precisely tailor your safety solutions for situations where a few seconds can make a big difference. Use this versatile device with both electromechanical switches and contact-free protection equipment such as light barriers and laser scanners.
Features & Benefits
• Simple screw termination offers secure connections in a matter of moments
• Compact dimensions of just 121.7 (D) x 100 (L) x 22.5mm (W) means it'll fit comfortably even where space is tight
• Integrated potentiometer lets you set a time delay between 0.5 and 30 seconds to help avoid nuisance activations
• 4-way DIP switch makes function-setting easy
Can I customise this unit?
Because the SIRIUS 3SK1 range is fully modular, you can pick and choose from a selection of expansion components to ensure your industrial safety equipment does exactly what you need it to do.