3SK1111-1AW20

The Siemens SIRIUS 3SK1111-1AW20 is the basic unit of the SIRIUS 3SK1 series safety relays. It provides a wide power supply range from 110V to 240V AC/DC, offers 4 sets of safety contacts, screw terminal connections, and can monitor devices such as emergency stops and safety light curtains. It has a switching life of up to 10 million cycles and is suitable for various voltage environments.

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Siemens SIRIUS 3SK1111-1AW20 Wide Voltage Safety Relay Basic Unit

Product Positioning

The Siemens SIRIUS 3SK1111-1AW20 is a basic safety relay unit, suitable for a wide voltage range of 110-240V AC/DC, and provides 4 sets of safety contacts. It can monitor emergency stop, safety light curtain and other devices to protect personnel and equipment.

Core Product Advantages and Features

Wide voltage range power supply

Supports 110V to 240V AC/DC power supply, making it suitable for various voltage environments and reducing the complexity of product selection.

4 sets of safety contacts

It provides a total of 4 sets of safety contacts (3NO+1NC), which can be used to form multiple safety monitoring loops.

Long switching life

With a rated switching life of 10 million cycles, it is suitable for high-frequency operation applications and reduces maintenance frequency.

Screw terminal connection

It adopts a standard screw terminal design, ensuring secure and reliable wiring and facilitating on-site maintenance and replacement.

project	Specification
Power supply voltage	110 V ~ 240 V AC/DC
Number of safe contacts	4 groups (3 NO + 1 NC)
Terminal type	Screw terminals
Protection level	IP20
Switching lifespan	Approximately 10 million times
External dimensions	Approximately 100 (length) × 122 (height) × 22.5 (width) mm

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