Sirius 3TK28 Safety Relay, Basic Units

Sirius safety relays with relay activation circuits feature normally open (NO) and normally closed (NC) contacts with positive actuation, in pairs. This means that if one contact welds, the other is used to disconnect the circuit. A positive actuation feedback signal contact (NO contact) detects a failure of the faulty NC contact.

Features

• Minimum programming time and ease of use thanks to the parameter adjustment display
• Versatility of the device offers reduced storage requirements
• Compact design
• Electrically isolated safety outputs
• Can be used at ambient temperatures up to 70 °C
• Standard relay activation circuits (positive actuation)
• Suitable for 3TK28 30 expansion modules

Standards

EN 60204-1, EN 92, EN 954-1