Contactor Relay Enabling Circuits

The Complete 3-in-1 Device

Siemens - Safety Relays with Contactor Relay Enabling Circuits

The safety relay with contactor relay enable circuit provides you with the perfect combination of electronic safety functionality and two redundant SIRIUS contactor relays with contacts. Premounted, wired-up, tested and certified as a unit. 3TK28 5. devices are available both as basic units and expansion units (for all safety switching devices).

Advantages at a glance

  • Electrically isolated enable circuits

  • AC-15/DC-13 switching capacity

  • Safe separation

  • High mechanical and electrical endurance

  • Certified as complete unit

  • Faults are minimized and costs reduced as they are pre-wired in the factory

  • Low mounting and installation costs