3SK2122-1AA10

The Siemens SIRIUS 3SK2122-1AA10 is a basic safety relay unit, powered by 24VDC, and equipped with 20 F-DI, 4 F-DQ, and 2 DQ relays. It can monitor up to 4 safety circuits, with a safety level of PLe/SIL3, and is suitable for monitoring emergency stop, light curtain, and other protective devices.

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Siemens SIRIUS 3SK2122-1AA10 Safety Relay Basic Unit, PLe/SIL3

Product Positioning

The 3SK2122-1AA10 is the basic unit of the Siemens SIRIUS 3SK2 series safety relays. It can monitor up to 4 independent safety circuits simultaneously, with a safety level of PLe/SIL3. It is suitable for safety applications such as emergency stop and protection devices.

Core Product Advantages and Features

Multi-channel security monitoring

It supports up to 4 independent safety channels and can simultaneously monitor multiple circuits such as emergency stop and protective door.

20 F-DI/4 F-DQ/2 DQ configuration

It provides 20 safety inputs, 4 safety outputs and 2 standard outputs to meet the needs of complex safety circuits.

PLe/SIL3 security level

Its safety performance meets PLe (EN ISO13849-1) and SIL3 (IEC61508) standards, making it suitable for high-risk applications.

Software parameterization settings

It can be parameterized through SIRIUS Safety ES software, eliminating the need for traditional hard-wiring changes.

project	Specification
Product Type	SIRIUS 3SK2 Safety Relay Basic Unit
model	3SK2122-1AA10
Power supply voltage	24V DC
Safe Input/Output	20 F-DI, 4 F-DQ, 2 DQ
Number of safe passages	Up to 4 channels
Security level	PLe(EN ISO13849-1), SIL3(IEC61508)
Power consumption	4.5W
Contact current	11A
Protection level	IP20
Wiring method	Screw terminals
Installation method	DIN rail
Applicable Applications	Emergency stop circuit, photoelectric protection device, valve and position switch monitoring

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