Solenoid Interlock Switches

Solenoid interlock switches allow guards or gates to be securely locked while dangerous processes are in operation. They require an internal solenoid to be energised before the guard can be opened and remain locked until all equipment has ceased moving.

What are solenoid interlock switches used for?

Solenoid interlock switches are widely used in machinery where an interruption could cause damage. This kind of switch mechanism is crucial when operating machinery where the hazard continues even after power supply to a device is stopped, for example when using circular saw blades. Solenoid interlock switches are also used where there is regular entry to dangerous areas, such as high temperature or pressurised sites.

How do solenoid interlock switches work?

Solenoid interlock switches are operated by magnetic force and respond when a guard opens. A machine can't start until the switch's guard is closed and locked, and it will hold the guard closed until dangerous processes are complete. Interlock switches use positive opening safety contacts for high reliability and can only be operated with one of the keys provided.


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Description Price Range Series Pole Configuration Normal State Configuration Power to Lock / Unlock Actuator Included Actuator Type Conduit Entry Length Width Depth Supply Voltage Maximum AC Voltage Auxiliary Contacts
RS Stock No. 820-3796
Mfr. Part No.D4SLN4QDAD
BrandOmron
MYR1,191.80
Each
units
- D4SL-N - - Power to Unlock No Various Options M20 39mm 39mm 179.9mm 24 V dc - 2NC/1NO
RS Stock No. 820-3803
Mfr. Part No.D4SLN4RDGD
BrandOmron
MYR1,191.80
Each
units
- D4SL-N - - Power to Lock No Various Options M20 39mm 39mm 179.9mm 24 V dc - 3NC
RS Stock No. 862-1699
Mfr. Part No.D4SL-N4QFA-D
BrandOmron
MYR1,117.31
Each
units
- D4SL-N - - Power to Unlock No Various Options M20 39mm 179.5mm 39mm 24 V dc - 2NC/1NO
RS Stock No. 749-7694
Mfr. Part No.3SE5322-1SB21
BrandSiemens
MYR1,175.72
Each
units
Sirius 3SE5 - - Power to Unlock No Various Options M20 184.1mm 54mm 39.1mm 230 V ac - 1NO
RS Stock No. 739-0571
Mfr. Part No.XCSLF2525312
MYR862.76
Each
units
Preventa XCS-LF - - Power to Unlock Yes Key M20 205mm 51mm 43.5mm 24 V ac/dc - -
RS Stock No. 739-0577
Mfr. Part No.XCSLF2725342
MYR710.66
Each
units
Preventa XCS-LF - - Power to Unlock Yes Key M20 205mm 51mm 43.5mm 230 V ac/dc - -
RS Stock No. 263-3810
Mfr. Part No.XCSE7532
MYR2,413.04
Each
units
Preventa XCS-E - - Power to Lock Yes Key PG13.5 98mm 44mm 146mm 120 V ac - -
RS Stock No. 749-7690
Mfr. Part No.3SE5312-0SD13
BrandSiemens
MYR1,378.60
Each
units
Sirius 3SE5 - - Power to Unlock No Various Options M20 184.1mm 54mm 55.7mm 230 V ac - 1NO
RS Stock No. 739-0574
Mfr. Part No.XCSLF2725312
MYR823.85
Each
units
Preventa XCS-LF - - Power to Unlock Yes Key M20 205mm 51mm 43.5mm 24 V ac/dc - -
RS Stock No. 178-3150
Mfr. Part No.8 10 BM 28
BrandMecalectro
MYR909.27
Each
units
- - - - Power to Unlock No Various Options - 60mm 30mm 30mm 24 V dc - -
RS Stock No. 746-7283
Mfr. Part No.D4NL-4EFA-B
BrandOmron
MYR1,038.68
Each
units
- D4NL - - Power to Unlock - Various Options M20 88.5mm 95mm 35.5mm 24 V dc - NC/NO
RS Stock No. 498-959
Mfr. Part No.3SE5322-0SD21
BrandSiemens
MYR1,051.56
Each
units
Sirius 3SE5 - - Power to Unlock - Various Options M20 54mm 43.8mm 159mm 24 V dc - 1NO
RS Stock No. 133-0068
Mfr. Part No.XCSLE2727512
MYR615.26
Each
units
Preventa XCS-LE DP - Power to Lock No Key M20 44mm 51mm 205mm 24 V ac/dc 240V -
RS Stock No. 814-6996
Mfr. Part No.XCSE5513
MYR2,614.78
Each
units
Preventa XCS-E - - Power to Lock Yes Key 1/2 NPT 146mm 98mm 44mm 24 V ac/dc - -
RS Stock No. 826-3997
Mfr. Part No.202001-SS
BrandIDEM
MYR972.77
Each
units
SAMLOCK KLM - - Power to Unlock No Various Options M20 176mm 46mm 47mm 24 V ac/dc - 1NO
RS Stock No. 820-3793
Mfr. Part No.D4SLN4RDAD
BrandOmron
MYR1,191.80
Each
units
- D4SL-N - - Power to Unlock No Various Options M20 39mm 39mm 179.9mm 24 V dc - 3NC
RS Stock No. 763-6946
Mfr. Part No.3SE5322-0SD23
BrandSiemens
MYR1,051.56
Each
units
Sirius 3SE5 - - Power to Lock - Various Options M20 54mm 43.8mm 184.1mm 230 V ac - 1NO
RS Stock No. 617-5138
Mfr. Part No.AZM415-11/11 ZPKE 230VAC-M20
BrandSchmersal
MYR2,300.82
Each
units
- AZM 415 - - Power to Unlock No Various Options 1/2 NPT 100mm 46.5mm 130mm 230 V ac - 2NO
RS Stock No. 742-0717
Mfr. Part No.AZM 170SK-11/11ZRK-2197 24 VAC/DC
BrandSchmersal
MYR1,375.85
Each
units
- AZM 170 - - Power to Unlock No Various Options 1/2 NPT 30mm 108mm 100.5mm 24 V ac/dc - 2NO
RS Stock No. 123-7511
Mfr. Part No.201021
BrandIDEM
MYR882.78
Each
units
SEZYLOCK KLP-P2L - - Power to Lock No Various Options M20 46mm 160mm 45.5mm 24 V dc - NC/NO
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