Siemens
Siemens SIRIUS 3SK1121-1AB40 safety relay
Manufacturer part number: 3SK1121-1AB40ESYS SKU: 3SK1121-1AB40
Net unit price, VAT 0%
€284.49
VAT 25.5% and delivery are shown separately in the request summary.
Current availability
Current available stock: 0 pcs
- Minimum order
- 1 pcs
- Order increment
- 1 pcs
- Availability checked
- 1 Sept 2026, 08:45
Siemens SIRIUS 3SK1121-1AB40 safety relay. Key selection data: Instantaneous NO safety outputs: 3; NC signaling contacts: 1; SIL level: 3; Supply voltage: 24 V DC; Connector type: screw terminal; Mounting method: screw and snap-on mounting.
Direct ordering is unavailable for this item.
Send the part number and quantity to ESYS for availability or compatibility confirmation.
Information for product selection
Typical applications
- Safety-function signal processing in machine automation
- Emergency-stop and guard circuit implementation
- Replacement in an existing Siemens assembly when article number 3SK1121-1AB40 matches
Key specifications
- Instantaneous NO safety outputs
- 3
- NC signaling contacts
- 1
- Supply voltage
- 24 V DC
- SIL level
- 3
- Connector type
- screw terminal
- Mounting method
- screw and snap-on mounting
Show additional verified specifications
- Protection rating
- IP20
- Mounting position
- any
- Connectable conductor cross-section
- 1x (0.5 ... 2.5 mm²), 2x (0.5 ... 1.0 mm²)
- Insulation voltage
- 300 V
- Width
- 22.5 mm
- Height
- 100 mm
Lifecycle
- Status
- Active
Compatibility and related parts
3SK1121-1AB40
Replacement: Replacement is allowed only when the target article number is exactly 3SK1121-1AB40; this does not establish interchangeability with any other Siemens article.
