Siemens safety relay 24V AC/DC 2NO 1NC
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Product Description
Siemens 3SK1112-2BB40 — SIRIUS 3SK1 safety relay. Compact safety relay for emergency-stop, safety-gate and light-curtain monitoring per EN ISO 13849. SIRIUS 3SK1 safety relay basic unit with 2 enabling paths + 1 signaling. PL e / Cat 4, SIL 3. For emergency-stop and two-hand control. Installed in low-voltage switchgear panels, main and sub-distribution boards, motor control centres and DIN-rail consumer units.
Technical Specifications
- Type
- 3SK1 safety relay
- Performance level
- PL e / Cat 4
- SIL
- 3
- Enabling
- 2NO
- Signaling
- 1NC
- Supply
- 24V AC/DC
- Voltage
- 24 V
- Contact configuration
- 2 NO + 1 NC
Standards & Compliance
- Classification / Approval
- EN ISO 13849-1
- HS Code
- 8536.50
Product Documentation
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Technical guides
Catalogue entry last verified: 2026-08-13. A manufacturer datasheet is attached to this entry — confirm application-critical values against it.
Frequently asked questions
- Where can I buy 3SK1112-2BB40?
- 3SK1112-2BB40 can be ordered from cballast.com as a Siemens catalogue item: request a quotation on this page or email sales@cballast.com, and the order ships worldwide.
- What is the manufacturer part number for this Siemens product?
- The manufacturer part number is 3SK1112-2BB40.
- What is the HS code for 3SK1112-2BB40?
- The customs tariff (HS) code for 3SK1112-2BB40 is 8536.50.
- Who manufactures 3SK1112-2BB40?
- 3SK1112-2BB40 is a Siemens product in the Electrical Components range.
- Is a datasheet available for 3SK1112-2BB40?
- Yes — the 3SK1112-2BB40 datasheet can be viewed and downloaded on this page.
- What is the minimum order quantity for 3SK1112-2BB40?
- The minimum order quantity is 1.
- Is 3SK1112-2BB40 available?
- Yes — 3SK1112-2BB40 is available to order: fulfilment is from supplier stock in cBallast's European network, dispatched directly from the warehouse to the customer, with the exact lead time stated in the quotation (reply within 24 hours).