Siemens SIRIUS 3SK1 Safety Relay 24V dc, Single Channel 0 Safety Contacts
- RS Stock No.:
- 202-1668
- Mfr. Part No.:
- 3SK1220-1AB40
- Brand:
- Siemens
Subtotal (1 unit)*
£121.16
(exc. VAT)
£145.39
(inc. VAT)
FREE delivery for orders over £50.00
In Stock
- Plus 3 unit(s) shipping from 01 October 2025
Need more? Click ‘Check delivery dates’ to find extra stock and lead times.
Units | Per unit |
---|---|
1 + | £121.16 |
*price indicative
- RS Stock No.:
- 202-1668
- Mfr. Part No.:
- 3SK1220-1AB40
- 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 | |
Supply Voltage | 24V dc | |
Number of Channels | 1 | |
Safety Contacts | 0 | |
Function | Expansion Module | |
Range | SIRIUS | |
Safety Category ISO 13849-1 | 4 | |
PL ISO 13849-1 | e | |
SIL IEC 61508 | 3 | |
Terminal Type | Screw | |
Standards Met | CSA, UL Listed | |
Series | 3SK1 | |
Width | 17.5mm | |
Depth | 121.6mm | |
Length | 100mm | |
Performance Level | e | |
Select all | ||
---|---|---|
Brand Siemens | ||
Supply Voltage 24V dc | ||
Number of Channels 1 | ||
Safety Contacts 0 | ||
Function Expansion Module | ||
Range SIRIUS | ||
Safety Category ISO 13849-1 4 | ||
PL ISO 13849-1 e | ||
SIL IEC 61508 3 | ||
Terminal Type Screw | ||
Standards Met CSA, UL Listed | ||
Series 3SK1 | ||
Width 17.5mm | ||
Depth 121.6mm | ||
Length 100mm | ||
Performance Level e | ||
- COO (Country of Origin):
- DE
Siemens Safety Relay, Sensor Extension Type, Type-B Safety Device - SIRIUS Series - 3SK1220-1AB40
To protect people and equipment from electrical hazards, wire up this safety relay from Siemens. The device responds to an error detected by a connected sensor by sending a signal to the next layer in your system. It's a versatile unit you can use in conjunction with floating, non-floating, single-channel and dual-channel sensors, among other components. You'll find products like this used in workplaces with automated machinery, including the food processing industry, oil and gas production and automotive manufacturing.
Features & Benefits
• Functions reliably in temperatures ranging between -25°C and +60°C
• Mountable in any position for fitting flexibility
• Protected against voltage surges of up to 800V for electrical safety
• IP20-rated as touch-proof against fingers and tools larger than 12mm
• Small size of 17.5 (W) x 100 (H) x 121.6mm (D), so it's a space-saving component
• Mountable in any position for fitting flexibility
• Protected against voltage surges of up to 800V for electrical safety
• IP20-rated as touch-proof against fingers and tools larger than 12mm
• Small size of 17.5 (W) x 100 (H) x 121.6mm (D), so it's a space-saving component
What response time will I get from this unit?
The device sends a response in just 60ms in both automatic and monitored start applications, saving precious time if there's an incident.
What's the supply voltage rating of this product?
This relay has a 24V DC supply voltage rating, so it's compatible with common energy sources.
Related links
- Siemens SIRIUS 3SK1 Safety Relay 24V dc, Single Channel 0 Safety Contacts
- Siemens SIRIUS 3SK1 Safety Relay 24V dc, Single Channel 3 Safety Contacts
- Siemens SIRIUS 3SK1 Safety Relay 24V dc, Single Channel 4 Safety Contacts
- Siemens SIRIUS 3SK1 Safety Relay 24V dc, Dual-Channel 1 Safety Contacts
- Siemens SIRIUS 3SK1 Safety Relay 24V dc, Single Channel 2 Safety Contacts
- Siemens SIRIUS 3SK1 Safety Relay 110 → 240V ac/dc, Single Channel 4 Safety Contacts
- Siemens SIRIUS 3SK1 Safety Relay 24V ac/dc, Single Channel 4 Safety Contacts
- Siemens SIRIUS 3SK1 Safety Relay 240V ac, Single Channel 4 Safety Contacts