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. 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. 198-655
Mfr. Part No.XCSTE7341
MYR1,375.03
Each
units
Preventa XCS TE - - Power to Unlock - - 1/2 in, PG11 94mm 110mm 33mm 230 V ac/dc - NC
RS Stock No. 763-6934
Mfr. Part No.3SE5322-0SB23
BrandSiemens
MYR1,072.25
Each
units
Sirius 3SE5 - - Power to Lock - Various Options M20 54mm 43.8mm 184.1mm 230 V ac - 1NO
RS Stock No. 862-1677
Mfr. Part No.D4SL-N4NFA-DN
BrandOmron
MYR1,042.83
Each
units
- D4SL-N - - Power to Unlock No Various Options M20 39mm 155mm 39mm 24 V dc - 2NC/1NO
RS Stock No. 739-0656
Mfr. Part No.XCSLE3535312
MYR1,004.31
Each
units
Preventa XCS-LE - - Power to Unlock Yes Key 1/2 NPT 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. 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. 123-7512
Mfr. Part No.202021-SS
BrandIDEM
MYR1,078.52
Each
units
SAMLOCK KLM-P2L - - Power to Lock No Various Options M20 46mm 176mm 47mm 24 V dc - NC/NO
RS Stock No. 739-0669
Mfr. Part No.XCSLE3737312
MYR885.76
Each
units
Preventa XCS-LE - - Power to Unlock Yes Key M20 205mm 51mm 43.5mm 24 V ac/dc - -
RS Stock No. 739-0631
Mfr. Part No.XCSLE2525312
MYR610.83
Each
units
Preventa XCS-LE - - Power to Unlock No Key M20 205mm 51mm 43.5mm 24 V ac/dc - -
RS Stock No. 742-0713
Mfr. Part No.AZM 170-11ZRKA 230 VAC
BrandSchmersal
MYR1,133.86
Each
units
- AZM 170 - - Power to Lock No Various Options 1/2 NPT 30mm 90mm 84mm 230 V ac - 1NO
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. 820-3771
Mfr. Part No.D4SLN4NDAD
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. 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. 739-0619
Mfr. Part No.XCSLF3737332
MYR1,557.02
Each
units
Preventa XCS-LF - - Power to Unlock Yes Key M20 205mm 51mm 43.5mm 120 V ac/dc - -
RS Stock No. 739-0666
Mfr. Part No.XCSLE3838312
MYR885.76
Each
units
Preventa XCS-LE - - Power to Unlock Yes Key M20 205mm 51mm 43.5mm 24 V ac/dc - -
RS Stock No. 301-9978
Mfr. Part No.XCSTE5332
MYR1,428.95
Each
units
Preventa XCS-TE - - Power to Unlock - - M16 93.5mm 33mm 110mm 120 V ac - NC
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. 763-6937
Mfr. Part No.3SE5322-0SB21
BrandSiemens
MYR1,072.25
Each
units
Sirius 3SE5 - - Power to Lock - Various Options M20 54mm 43.8mm 184.1mm 24 V dc - 1NO
RS Stock No. 739-0583
Mfr. Part No.XCSLF3535312
MYR1,256.92
Each
units
Preventa XCS-LF - - Power to Unlock Yes Key M20 205mm 51mm 43.5mm 24 V ac/dc - -
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