Siemens 3SK2122-2AA10 SIRIUS Safety Relay Basic Unit
Siemens 3SK2122-2AA10 SIRIUS safety relay with 20 F-DI, spring-loaded terminals.
The Siemens 3SK2122-2AA10 is a versatile basic unit within the SIRIUS 3SK2 safety relay series, offering 20 fail-safe digital inputs (F-DI), 4 fail-safe digital outputs (F-DQ), and 2 standard digital outputs (DQ), all operating on a 24 V DC power supply. This model features spring-loaded (push-in) terminals for faster and more reliable wiring. It is fully parameterizable using the SIRIUS Safety ES software and has a compact 45 mm width. The unit complies with up to SIL 3 (IEC 62061) and Performance Level e (ISO 13849-1). Expansions like 3SK1 output modules, 3RQ1 coupling relays, and 3RM1 fail-safe motor starters can be connected via a device connector.
This safety relay is designed for critical safety applications in industries such as manufacturing, automotive, and material handling. Its push-in terminals reduce installation time and ensure secure connections for emergency stop functions, safety gates, and light curtain systems.
Stanlo Automation, a veteran-owned surplus distributor, offers the Siemens 3SK2122-2AA10. Secure reliable safety components for your automation needs with confidence, knowing you're working with a trusted supplier.
| Series | SIRIUS 3SK2 |
| Type | Safety Relay Basic Unit |
| Inputs | 20 F-DI |
| Outputs | 4 F-DQ, 2 DQ |
| Voltage | 24 V DC |
| Width | 45 mm |
| Terminal Type | Spring-loaded (Push-in) |
| Safety Level | SIL 3 (IEC 62061), PL e (ISO 13849-1) |
| Parameterization | SIRIUS Safety ES |