Safety & Glass Relays

Siemens SIRIUS 3SK1 Safety Relays

Compact Safety with Reliable Control | 9A to 150A

The SIRIUS 3SK1 safety relay range by Siemens offers dependable motor protection and control in a compact footprint. Designed for applications up to 150A, it ensures safe shutdown and control of motors, machinery, and equipment in industrial environments.

Key Features

• Current range: 9A to 150A
• Compact DIN-rail mounting design
• Direct connection with SIRIUS contactors and starters
• Integrated monitoring of emergency stop, light curtains, and safety gates
• Flexible expansion modules for additional safety circuits
• LED status indication for fast diagnostics
• Certified according to EN ISO 13849-1, IEC 62061

Benefits

• Streamlined safety integration into new or existing systems
• Saves panel space with a compact footprint
• Modular design supports easy expansion
• Enhances operator safety and process reliability
• Ideal for compliance with international safety standards

Applications

• Motor-driven machinery
• Conveyors and packaging lines
• Processing plants
• Control panels requiring Category 3/4 safety compliance
• General industrial automation