Siemens 3SK1, 24 V dc Safety Relay, 4 Safety Contacts
- RS Stock No.:
- 784-5800
- Mfr. Part No.:
- 3SK1121-1AB40
- Manufacturer:
- Siemens
Subtotal (1 unit)*
SGD843.88
(exc. GST)
SGD919.83
(inc. GST)
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In Stock
- 4 unit(s) ready to ship from another location
- Plus 9 unit(s) shipping from 20 March 2026
Need more? Click ‘Check delivery dates’ to find extra stock and lead times.
Units | Per unit |
|---|---|
| 1 + | SGD843.88 |
*price indicative
- RS Stock No.:
- 784-5800
- Mfr. Part No.:
- 3SK1121-1AB40
- Manufacturer:
- Siemens
Specifications
Technical data sheets
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 | 22.5 mm | |
| Length | 100mm | |
| Height | 122mm | |
| Hazardous Area Certification | No | |
| Safety Category | 4 | |
| Coil Voltage | 24 V 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 22.5 mm | ||
Length 100mm | ||
Height 122mm | ||
Hazardous Area Certification No | ||
Safety Category 4 | ||
Coil Voltage 24 V dc | ||
- COO (Country of Origin):
- DE
Siemens Safety Relay, 24V DC Supply Voltage, Screw Terminals - SIRIUS 3SK1 Series - 3SK1121-1AB40
Ensure machinery or devices are quickly switched off with this safety relay from Siemens. It’s designed to automate emergency system shutdown in the event of an electrical fault or hazard, protecting both personnel and attached equipment. As the relay is fitted with four safety contacts, you can be sure it will still function should any of its contacts fail. You can easily fit it into awkward or small circuits thanks to its compact dimensions of 22.5 (W) x 100 (L) x 121.7mm (D). To suit your individual requirements, it has two sensor inputs with single or double channel connection options.
• Four LED lights for easy monitoring of your application and operating status
• Automated or manual reset options are available depending on your needs
• Can be used to automate the locking of protective doors in conjunction with a solenoid switch
• Fitted with a potentiometer for setting the delay time for system switch-on
How do I fit this safety relay?
You can install this safety relay securely into your system or onto a machine by way of screw terminals.
Related links
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