Safety relays

Your Benefits

  • Complete monitoring and evaluation of sensors
  • Time delay provides optimal protection of brake applications
  • Adjustable time delay at the front of the device (up to 30 s) makes it easy for the user to change settings
  • Fast, tool-free exchange via coded, plug-in screw-type terminals
  • Combines the advantages of classic relays and easy circuitry


The UE45-3S1 safety relay monitors safety switches and emergency stop pushbuttons in applications with a safety brake.

It offers 2 safety contacts, which directly switch off some of the actuators. The other actuators must be active until the machine has come to a complete stop. These actuators can be deactivated after a certain time.

This ensures the brake stops the machine, allowing access once the machine has come to a complete stop.

At a glance
  • Ideal for evaluating emergency stop pushbuttons and safety switches
  • Cross-circuit detection and sequence monitoring at the dual-channel input signal
  • 2 N/O contacts for direct integration into a machine environment
  • 1 N/O time for stop category 1 applications, time delayed up 30 s
  • Manual or automated reset
  • External device monitoring (EDM)
  • Coded version for all slots


Technical overview

  • Technical data overview

    Technical data overview

    ApplicationsEvaluation unit
    Safety integrity level

    SILCL3 (EN 62061) 1)

    SILCL2 (EN 62061) 2)


    Category 4 (EN ISO 13849) 1)

    Category 3 (EN ISO 13849) 2)

    Performance level

    PL e (EN ISO 13849) 1)

    PL d (EN ISO 13849) 2)

    Sensor monitoring

    Sequence monitoring

    Cross-circuit detection

    Delay time
    Typical response time25 ms
    Number of enable current contacts3
    Housing width22.5 mm
    • 1) For contacts 13/14, 23/24.
    • 2) For time contacts 37/38.
All technical data can be found accompanying the individual product