Safety Interlock Switches

Safety interlock switches respond when a mechanical guard opens. Interlock switches feature "positive opening" contacts for high reliability regardless of environmental conditions and withstand attempts to override the switch and defeat the system. 

Dozens of configurations are available.

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  1. Magnet Style Safety Switches: SI-MAG Series

    SI Series Safety Limit (position) Switches expand solutions for monitoring the position of a wide variety of guards, gates, covers and other movable machine fixtures/tooling.

  2. Compact Metal Style Safety Interlock Switches

    Small switches housed in metal are available in limit switch and trumpet styles, with a choice of actuators.

  3. Compact Plastic Style Safety Interlock Switches

    Small switches housed in plastic are available in limit switch and flat-pack styles, with a choice of actuators.

  4. Hinge Style Safety Interlock Switches

    Load-bearing hinge, rotary and standard hinge style switches provide an adjustable range of operation.

  5. Locking Style Switches (Power to Lock)

    Safety interlocking switches with guard locking capability ensure that a hazard has been stopped before the guard is opened. The fully inserted actuator is locked when voltage is applied to the solenoid. and unlocked when voltage is removed.

  6. Locking Style Switches (Power to Unlock)

    Safety interlocking switches with guard locking capability ensure that a hazard has been stopped before the guard is opened. The actuator is mechanically locked when it is fully inserted into the actuator head and unlocked by applying voltage to the solenoid.

  7. Lever Style Safety Limit Switches: SI Series

    SI Series Lever Style Safety Limit Switches are lever actuated Type 1 interlocking devices used to monitor the position of a guard, gate, door, or other physical barrier separating an individual from a hazard.

  8. Plunger Style Safety Limit Switches: SI Series

    SI Series Plunger Style Safety Limit Switches are plunger actuated Type 1 interlocking devices used to monitor the position of a guard, gate, door, or other physical barrier separating an individual from a hazard.

  9. Roller Style Safety Limit Switches: SI Series

    SI Series Roller Style Safety Limit Switches are roller actuated Type 1 interlocking devices used to monitor the position of a guard, gate, door, or other physical barrier separating an individual from a hazard.

  10. Spindle-Mount Lever Style Safety Limit Switches: SI Series

    SI Series Spindle-Mount Lever Style Safety Limit Switches are spindle-mount lever actuated Type 1 interlocking devices used to monitor the position of a guard, gate, door, or other physical barrier separating an individual from a hazard.