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 Power to Lock / Unlock Series Pole Configuration Supply Voltage Normal State Configuration Actuator Included Rated stroke Actuator Type Interface Safety Contacts Conduit Entry Auxiliary Contacts Length
RS Stock No. 739-0669
Mfr. Part No.XCSLE3737312
£151.00
Each
Units
Preventa Power to Unlock XCS-LE - 24 V ac/dc - Yes - Key - 2NC/1NO M20 - 205mm
RS Stock No. 357-9313
Mfr. Part No.440G-T27132
£192.85
Each
Units
TLS-2-GD2 Power to Lock 440G-T - 110 V ac - - - - - 2NC M20 NO 126mm
RS Stock No. 263-3797
Mfr. Part No.XCSE7512
£334.00
Each
Units
Preventa Power to Lock XCS-E - 24 V ac/dc - Yes - Key - 1NO/1NC PG13.5 - 98mm
RS Stock No. 357-9290
Mfr. Part No.440G-T27123
£197.93
Each
Units
TLS-1-GD2 Power to Unlock 440G-T - 230 V ac - - - - - 2NC M20 NO 126mm
RS Stock No. 198-728
Mfr. Part No.XCSTE5511
£221.00
Each
Units
Preventa Power to Lock XCS TE - 24 V ac/dc - - - - - 1NO/1NC PG11 NC 94mm
RS Stock No. 617-5122
Mfr. Part No.AZM415-11/11 ZPKE 24VAC/DC-M20
BrandSchmersal
£341.35
Each
Units
- Power to Unlock AZM 415 - 24 V ac/dc - No - Various Options - 2NC 1/2 NPT 2NO 100mm
RS Stock No. 498-959
Mfr. Part No.3SE5322-0SD21
BrandSiemens
£160.31
Each
Units
Sirius Power to Unlock 3SE5 - 24 V dc - - - Various Options - 2NC M20 1NO 54mm
RS Stock No. 263-3725
Mfr. Part No.XCSE5312
£292.60
Each
Units
Preventa Power to Unlock XCS-E - 24 V ac/dc - Yes - Key - 2NO/1NC M20 - 98mm
RS Stock No. 826-3953
Mfr. Part No.221301
BrandIDEM
£116.36
Each
Units
LEILOCK Power to Unlock KL1-P - 24 V ac/dc - No - Various Options - 2NC M20 1NO 143mm
RS Stock No. 356-6193
Mfr. Part No.440G-L07262
£396.93
Each
Units
Atlas 5 Power to Unlock 440G-L - 230 V ac/dc - Yes - Standard - 2NC M20 NO 90mm
RS Stock No. 178-3144
Mfr. Part No.8 10 BJ 28
BrandMecalectro
£133.13
Each
Units
- Power to Lock - - 24 V dc - No - Various Options - - - - 65mm
RS Stock No. 301-9962
Mfr. Part No.XCSTE5312
£200.00
Each
Units
Preventa Power to Unlock XCS-TE - 24 V ac/dc - - - - - 1NO/1NC M16 NC 93.5mm
RS Stock No. 814-7087
Mfr. Part No.XCSL761B3
£306.00
Each
Units
- Power to Unlock XCS-L - 24 V dc - Yes - Key - 1NO/2NC 1/2 NPT - 7.64in
RS Stock No. 252-3791
Mfr. Part No.XCSE5311
£285.95
Each
Units
Preventa Power to Unlock XCS-E - 24 V ac/dc - Yes - Key - 2NO/1NC PG13.5 - 98mm
RS Stock No. 742-0726
Mfr. Part No.AZM 170SK-11/02ZRK-2197 24VAC/DC
BrandSchmersal
£220.25
Each
Units
- Power to Unlock AZM 170 - 24 V ac/dc - No - Various Options - 3NC 1/2 NPT 1NO 30mm
RS Stock No. 862-1715
Mfr. Part No.D4SL-N4AFG
BrandOmron
£129.90
Each
Units
- Power to Lock D4SL-N - 24 V dc - No - Various Options - 1NC/1NO M20 NC/NO 39mm
RS Stock No. 746-7286
Mfr. Part No.D4NL-4CFA-B
BrandOmron
£157.20
Each
Units
- Power to Unlock D4NL - 24 V dc - - - Various Options - 2NC M20 NC/NO 88.5mm
RS Stock No. 880-1902
Mfr. Part No.MZM 100 B ST2-SD2PREM-A
BrandSchmersal
£633.47
Each
Units
- Power to Lock MZM 100 B - 24 V dc - No - Straight - 2 PNP M12 - 40mm
RS Stock No. 880-1842
Mfr. Part No.EX-AZM 161SK-12/12RK-024-3D
BrandSchmersal
£301.18
Each
Units
- Power to Unlock EX-AZM 161 - 24 V ac/dc - No - Various Options - 2NC/2NO M16 NC/NO 130mm
RS Stock No. 880-1703
Mfr. Part No.AZM300Z-ST-1P2P
BrandSchmersal
£397.95
Each
Units
- Power to Unlock AZM 300 - 24 V dc - No - Various Options - 2 PNP 1/2 NPT 1 PNP 85mm