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SI-LS & SI-QM100 Series

Guard Locking Safety Switches

Guard locking safety switches include a machine mounted switch and a guard mounted actuator that prevent access to an area by remaining locked together until the hazardous motion has come to a complete stop.

  • Achieves Cat 4, PL e, or SIL CL 3 safety ratings with a single swicth deployed on a guard
  • Mechanically coded actuators use two independent operating elements, making it difficult to bypass safety functions
  • Rotating head requires little or no tools to adjust to one of four positions
  • Can be used to prevent access to a hazard, ensure critical processes are not interrupted, or secure material and equipment from theft or tampering
  • Once locked, a machine guard door will not open, eliminating an opportunity for nuisance trips, even if exposed to frequent impact or prolonged vibration
  • IP67-rated safety devices that resist dust, dirt, and some exposure to water and similar environmental challenges
  • Design meets positive opening requirements for safety interlocks
  • Available in power-to-lock and power-to-unlock models with rigid and flexible in-line actuators and a wide range of solenoid voltages

Technical Literature

Date
Type
Size
SI-QM100 Locking Style Safety Interlock Switches
31 Aug 2017
Datasheet
284K
SI-LS42 Locking Style Safety Interlock Switches
5 Oct 2016
Datasheet
292K

Marketing Literature

Date
Type
Size
Safety Switches
Safety Switches
6 Sep 2019
Product Brochure
1.7MB
Safety Solutions Brochure
8 May 2019
Product Brochure
10.9MB
Date
Type
Size
Safety Switches
Safety Switches
09/04/19
Product Brochure
1.9MB
Date
Type
Size
Machine Safety Catalog (15) - Locking Style Switches - Japanese
11/18/02
Catalog
460K

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Device Type

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  • (42)

Actuator (Safety) Contacts

  • (12)
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  • (6)

Locking Mechanism

  • (22)
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Actuation

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Feature: Washdown Rated

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  1. SI-LS42DMI

    logo with r symbol

    SI-LS42DMI SI-LS42 Series Safety Interlock Body; Solenoid Lock/Spring Unlock; Two N.C. One N.O.

  2. SI-LS42DMMIF

    logo with r symbol

    Solenoid Locking: Flexible In-line
    Solenoid Voltage: 24 V ac/dc
    Contact Configuration: 2 NC/1 NO; 1 NC
    Dimensions: 170 x 43 x 45 mm; Plastic Housing

  3. SI-LS42DSH

    logo with r symbol

    SI-LS42DSH SI-LS42 Series Safety Interlock Body; Spring Lock/Solenoid Unlock; Two N.C.

  4. SI-LS42DMH

    logo with r symbol

    SI-LS42DMH SI-LS42 Series Safety Interlock Body; Spring Lock/Solenoid Unlock; Two N.C.

  5. SI-LS42DMSHF

    logo with r symbol

    Spring Locking: Flexible In-line
    Solenoid Voltage: 24 V ac/dc
    Contact Configuration: 2 NC; 1 NC/1 NO
    Dimensions: 170 x 43 x 45 mm; Plastic Housing

  6. SI-LS42DSG

    logo with r symbol

    SI-LS42DSG SI-LS42 Series Safety Interlock Body; Spring Lock/Solenoid Unlock; One N.C. One N.O.

  7. SI-LS42DMG

    logo with r symbol

    SI-LS42DMG SI-LS42 Series Safety Interlock Body; Solenoid Lock/Spring Unlock; One N.C. One N.O.

  8. SI-LS42DMJ

    logo with r symbol

    SI-LS42DMJ SI-LS42 Series Safety Interlock Body; Solenoid Lock/Spring Unlock; Three N.C.

  9. SI-LS42DMMHF

    logo with r symbol

    Solenoid Locking: Flexible In-line
    Solenoid Voltage: 24 V ac/dc
    Contact Configuration: 2 NC; 1 NC/1 NO
    Dimensions: 170 x 43 x 45 mm; Plastic Housing

  10. SI-LS42DSI

    logo with r symbol

    SI-LS42DSI SI-LS42 Series Safety Interlock Body; Spring Lock/Solenoid Unlock; Two N.C. One N.O.

  11. SI-LS42WSG

    logo with r symbol

    SI-LS42WSG SI-LS42 Series Safety Interlock Body; Spring Lock/Solenoid Unlock; One N.C. One N.O.

  12. SI-LS42WSH

    logo with r symbol

    SI-LS42WSH SI-LS42 Series Safety Interlock Body; Spring Lock/Solenoid Unlock; Two N.C.

  13. SI-LS42DMMGF

    logo with r symbol

    Solenoid Locking: Flexible In-line
    Solenoid Voltage: 24 V ac/dc
    Contact Configuration: 1 NC/1 NO; 1 NC/1 NO
    Dimensions: 170 x 43 x 45 mm; Plastic Housing

  14. SI-LS42DMMJF

    logo with r symbol

    Solenoid Locking: Flexible In-line
    Solenoid Voltage: 24 V ac/dc
    Contact Configuration: 3 NC; 1 NC
    Dimensions: 170 x 43 x 45 mm; Plastic Housing

  15. SI-LS42DMSIF

    logo with r symbol

    Spring Locking: Flexible In-line
    Solenoid Voltage: 24 V ac/dc
    Contact Configuration: 2 NC/1 NO; 1 NC
    Dimensions: 170 x 43 x 45 mm; Plastic Housing

  16. SI-LS42DMSGF

    logo with r symbol

    Spring Locking: Flexible In-line
    Solenoid Voltage: 24 V ac/dc
    Contact Configuration: 1 NC/1 NO; 1 NC/1 NO
    Dimensions: 170 x 43 x 45 mm; Plastic Housing

  17. SI-LS42DMSH

    logo with r symbol

    Spring Locking: Standard In-line
    Solenoid Voltage: 24 V ac/dc
    Contact Configuration: 2 NC; 1 NC/1 NO
    Dimensions: 170 x 43 x 45 mm; Plastic Housing

  18. SI-LS42WMSH

    logo with r symbol

    Spring Locking: Straight In-line
    Solenoid Voltage: 110/230VAC
    Contact Configuration: 2 NC; 1 NC/1NO
    Dimensions: 170 x 43 x 45 mm; Plastic Housing

  19. SI-LS42WMSG

    logo with r symbol

    Spring Locking: Straight In-line
    Solenoid Voltage: 110/230VAC
    Contact Configuration: 1 NC/1 NO; 1 NC/1 NO
    Dimensions: 170 x 43 x 46 mm; Plastic Housing

  20. SI-LS42DMMH-803290

    logo with r symbol

    Solenoid Locking: Standard In-line; 8-pin M12 Euro Pigtail
    Solenoid Voltage: 24 V ac/dc
    Contact Configuration: 2 NC; 1 NC/1 NO
    Dimensions: 170 x 43 x 45 mm; Plastic Housing

  21. SI-LS42DSJ

    logo with r symbol

    SI-LS42DSJ SI-LS42 Series Safety Interlock Body; Spring Lock/Solenoid Unlock; Three N.C.

  22. SI-LS42WMG

    logo with r symbol

    SI-LS42WMG SI-LS42 Series Safety Interlock Body; Solenoid Lock/Spring Unlock; One N.C. One N.O.

  23. SI-LS42DMMH

    logo with r symbol

    Solenoid Locking: Standard In-line
    Solenoid Voltage: 24 V ac/dc
    Contact Configuration: 2 NC; 1 NC/1 NO
    Dimensions: 170 x 43 x 45 mm; Plastic Housing

  24. SI-LS42DMSJF

    logo with r symbol

    Spring Locking: Flexible In-line
    Solenoid Voltage: 24 V ac/dc
    Contact Configuration: 3 NC; 1 NC
    Dimensions: 170 x 43 x 45 mm; Plastic Housing

  25. SI-LS42DMSI

    logo with r symbol

    Spring Locking: Straight In-line
    Solenoid Voltage: 24 V ac/dc
    Contact Configuration: 2 NC/1 NO; 1 NC
    Dimensions: 170 x 43 x 45 mm; Plastic Housing

  26. SI-LS42WMI

    logo with r symbol

    SI-LS42WMI INTERLOCK BODY

  27. SI-LS42WMSGF

    logo with r symbol

    Spring Locking: Flexible In-line
    Solenoid Voltage: 110/230VAC
    Contact Configuration: 1 NC/1 NO; 1 NC/1NO
    Dimensions: 170 x 43 x 46 mm; Plastic Housing

  28. SI-LS42DMMG

    logo with r symbol

    Solenoid Locking: Standard In-line
    Solenoid Voltage: 24 V ac/dc
    Contact Configuration: 1 NC/1 NO; 1 NC/1 NO
    Dimensions: 170 x 43 x 45 mm; Plastic Housing

  29. SI-LS42DMMI

    logo with r symbol

    Solenoid Locking: Straight In-line
    Solenoid Voltage: 24 V ac/dc
    Contact Configuration: 2 NC/1 NO; 1 NC
    Dimensions: 170 x 43 x 45 mm; Plastic Housing

  30. SI-LS42WMH

    logo with r symbol

    SI-LS42WMH INTERLOCK BODY

  31. SI-LS42WMSIF

    logo with r symbol

    Spring Locking: Flexible In-line
    Solenoid Voltage: 110/230VAC
    Contact Configuration: 2 NC/1 NO; 1 NC
    Dimensions: 170 x 43 x 45 mm; Plastic Housing

  32. SI-LS42WSI

    logo with r symbol

    SI-LS42WSI INTERLOCK BODY

  33. SI-LS42DMMJ

    logo with r symbol

    Solenoid Locking: Straight In-line
    Solenoid Voltage: 24 V ac/dc
    Contact Configuration: 3 NC; 1 NC
    Dimensions: 170 x 43 x 45 mm; Plastic Housing

  34. SI-LS42DMSG

    logo with r symbol

    Spring Locking: Standard In-line
    Solenoid Voltage: 24 V ac/dc
    Contact Configuration: 1 NC/1 NO; 1 NC/1 NO
    Dimensions: 170 x 43 x 45 mm; Plastic Housing

  35. SI-LS42DMSJ

    logo with r symbol

    Spring Locking: Straight In-line
    Solenoid Voltage: 24 V ac/dc
    Contact Configuration: 3 NC; 1 NC
    Dimensions: 170 x 43 x 45 mm; Plastic Housing

  36. SI-LS42WMMG

    logo with r symbol

    Solenoid Locking: Straight In-line
    Solenoid Voltage: 110/230VAC
    Contact Configuration: 1 NC/1 NO; 1 NC/1 NO
    Dimensions: 170 x 43 x 45 mm; Plastic Housing

  37. SI-LS42WMMGF

    logo with r symbol

    Solenoid Locking: Flexible In-line
    Solenoid Voltage: 110/230VAC
    Contact Configuration: 1 NC/1 NO; 1 NC/1 NO
    Dimensions: 170 x 43 x 46 mm; Plastic Housing

  38. SI-LS42WMMH

    logo with r symbol

    Solenoid Locking: Straight In-line
    Solenoid Voltage: 110/230VAC
    Contact Configuration: 2 NC; 1 NC/1 NO
    Dimensions: 170 x 43 x 45 mm; Plastic Housing

  39. SI-LS42WMMIF

    logo with r symbol

    Solenoid Locking: Flexible In-line
    Solenoid Voltage: 110/230VAC
    Contact Configuration: 2 NC/1NO; 1 NC
    Dimensions: 170 x 43 x 46 mm; Plastic Housing

  40. SI-LS42WMSHF

    logo with r symbol

    Spring Locking: Flexible In-line
    Solenoid Voltage: 110/230VAC
    Contact Configuration: 2 NC; 1 NC/1 NO
    Dimensions: 170 x 43 x 46 mm; Plastic Housing

  41. SI-LS42WMMHF

    logo with r symbol

    Solenoid Locking: Flexible In-line
    Solenoid Voltage: 110/230VAC
    Contact Configuration: 2 NC; 1 NC/1 NO
    Dimensions: 170 x 43 x 46 mm; Plastic Housing

  42. SI-LS42WMMI

    logo with r symbol

    Solenoid Locking: Straight In-line
    Solenoid Voltage: 110/230VAC
    Contact Configuration: 2 NC/1 NO; 1 NC
    Dimensions: 170 x 43 x 45 mm; Plastic Housing

  43. SI-LS42WMSI

    logo with r symbol

    Spring Locking: Straight In-line
    Solenoid Voltage: 110/230VAC
    Contact Configuration: 2 NC/1 NO; 1 NC
    Dimensions: 170 x 43 x 46 mm; Plastic Housing