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. 880-1902
Mfr. Part No.MZM 100 B ST2-SD2PREM-A
BrandSchmersal
TWD28,485.00
Each
units
- MZM 100 B - - Power to Lock No Straight M12 40mm 179mm 40mm 24 V dc - -
RS Stock No. 746-7223
Mfr. Part No.D4JL-4NFA-C5
BrandOmron
TWD8,760.00
Each
units
- D4JL - - Power to Unlock - - 1/2 NPT 114mm 132.9mm 36.5mm 24 V dc - 2NC/1NO
RS Stock No. 146-5797
Mfr. Part No.AZM170-02ZRIA-B1 24VAC/DC
BrandSchmersal
TWD9,677.00
Each
units
- AZM 170 DP - Power to Lock Yes Coded M20 90mm 84mm 30mm 24 V ac/dc 24V -
RS Stock No. 178-3150
Mfr. Part No.8 10 BM 28
BrandMecalectro
TWD6,066.00
Each
units
- - - - Power to Unlock No Various Options - 60mm 30mm 30mm 24 V dc - -
RS Stock No. 132-9971
Mfr. Part No.XCSPL761
TWD1,709.00
Each
units
Preventa XCSPL - NC/NO - Yes Straight Lever - 30mm 103mm 88mm - - -
RS Stock No. 826-3953
Mfr. Part No.221301
BrandIDEM
TWD5,051.00
Each
units
LEILOCK KL1-P - - Power to Unlock No Various Options M20 143mm 63mm 41.5mm 24 V ac/dc - 1NO
RS Stock No. 301-9962
Mfr. Part No.XCSTE5312
TWD6,231.00
Each
units
Preventa XCS-TE - - Power to Unlock - - M16 93.5mm 33mm 110mm 24 V ac/dc - NC
RS Stock No. 763-6940
Mfr. Part No.3SE5322-0SE21
BrandSiemens
TWD8,175.00
Each
units
Sirius 3SE5 - - Power to Lock - Various Options M20 54mm 43.8mm 184.1mm 24 V dc - 1NO
RS Stock No. 862-1699
Mfr. Part No.D4SL-N4QFA-D
BrandOmron
TWD6,241.00
Each
units
- D4SL-N - - Power to Unlock No Various Options M20 39mm 179.5mm 39mm 24 V dc - 2NC/1NO
RS Stock No. 814-7087
Mfr. Part No.XCSL761B3
TWD13,760.00
Each
units
- XCS-L - - Power to Unlock Yes Key 1/2 NPT 7.64in 2.99in 1.73in 24 V dc - -
RS Stock No. 123-7512
Mfr. Part No.202021-SS
BrandIDEM
TWD7,195.00
Each
units
SAMLOCK KLM-P2L - - Power to Lock No Various Options M20 46mm 176mm 47mm 24 V dc - NC/NO
RS Stock No. 739-0580
Mfr. Part No.XCSLF2525342
TWD6,206.00
Each
units
Preventa XCS-LF - - Power to Unlock Yes Key M20 205mm 51mm 43.5mm 230 V ac/dc - -
RS Stock No. 742-0713
Mfr. Part No.AZM 170-11ZRKA 230 VAC
BrandSchmersal
TWD7,564.00
Each
units
- AZM 170 - - Power to Lock No Various Options 1/2 NPT 30mm 90mm 84mm 230 V ac - 1NO
RS Stock No. 763-7053
Mfr. Part No.3SE5312-0SE11
BrandSiemens
TWD10,329.00
Each
units
Sirius 3SE5 - - Power to Lock - Various Options M20 54mm 43.8mm 184.1mm 24 V dc - 1NO
RS Stock No. 739-0638
Mfr. Part No.XCSLE2525342
TWD4,991.00
Each
units
Preventa XCS-LE - - Power to Unlock Yes Key M20 205mm 51mm 43.5mm 230 V ac/dc - -
RS Stock No. 826-3962
Mfr. Part No.221304
BrandIDEM
TWD5,168.00
Each
units
LEILOCK KL1-P - - Power to Unlock No Various Options M20 143mm 63mm 41.5mm 110 V ac - 1NO
RS Stock No. 749-7694
Mfr. Part No.3SE5322-1SB21
BrandSiemens
TWD7,844.00
Each
units
Sirius 3SE5 - - Power to Unlock No Various Options M20 184.1mm 54mm 39.1mm 230 V ac - 1NO
RS Stock No. 744-8651
Mfr. Part No.570000
BrandPilz
TWD6,309.00
Each
units
PSENmech PSENme - - Power to Unlock Yes Standard M20 184mm 42.5mm 51mm 24 V ac/dc - -
RS Stock No. 880-1785
Mfr. Part No.AZM 200ST2-T-SD2PA
BrandSchmersal
TWD20,001.00
Each
units
- AZM 200 - - Power to Lock No Various Options M12 40mm 220mm 20mm 24 V dc - -
RS Stock No. 133-0066
Mfr. Part No.XCSLF3737512
TWD9,712.00
Each
units
Preventa XCS-LF 3P - Power to Lock Yes Key M20 44mm 51mm 205mm 24 V ac/dc 240V -