Product Description
Siemens 3SK1121-2AB40
The Siemens 3SK1121-2AB40 is a SIRIUS 3SK1 Advanced Basic Unit safety relay designed for monitoring safety-related circuits in industrial applications. It provides a reliable and efficient solution for implementing safety functions such as emergency stop (E-STOP) pushbuttons and safety gate monitoring. This compact 22.5 mm unit operates on a 24V DC supply and features screw-type terminals for easy and secure wiring. With two enabling paths (NO contacts) and one signaling path (NC contact), it offers flexible integration into machine control systems, ensuring compliance with high safety standards like PLe (ISO 13849-1) and SIL 3 (IEC 61508).
Technical Specifications:
- Product Type: SIRIUS 3SK1 Safety Relay, Advanced Basic Unit
- Control Supply Voltage: 24 V DC
- Outputs: 2 NO contacts (enabling paths), 1 NC contact (signaling path), relay-based
- Connection Type: Screw terminals
- Safety Integrity Level: SIL 3 according to IEC 61508, PL e according to ISO 13849-1
- Start Type: Monitored or automatic start
- Overall Width: 22.5 mm
Siemens 3SK1121-2AB40
Shop the Siemens 3SK1121-2AB40 SIRIUS Safety Relay. This 24V DC advanced basic unit with screw terminals is ideal for E-STOP and safety gate applications, certified up to PLe and SIL 3 for maximum machine safety.
