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 Rated stroke Supply Voltage Actuator Type Interface Safety Contacts Conduit Entry Length Housing Material
RS Stock No. 357-9290
Mfr. Part No.440G-T27123
kr 2 848,31
Each
Units
TLS-1-GD2 440G-T - - Power to Unlock - - 230 V ac - - 2NC M20 126mm Plastic
RS Stock No. 251-1978
Mfr. Part No.440G-S36005
kr 4 272,46
Each
Units
Spartan 440G-S - - Power to Unlock Yes - 230 V ac Standard - 2NC M20 58mm Plastic
RS Stock No. 151-2444
Mfr. Part No.442G-MABR-ULM-C04
kr 10 390,13
Each
Units
- 442G - - Power to Unlock Yes - 5 → 24 V dc Unique RFID Coded Bolt - - M23 285.3mm Glass Fibre Reinforced Plastic
RS Stock No. 822-3860
Mfr. Part No.D4SL-N3NFG-DN
BrandOmron
kr 1 264,67
Each
Units
- D4SL-N - - Power to Lock - - 24 V dc Various Options - 2NC/1NO 1/2-14 NPT 39mm Metal
RS Stock No. 617-5071
Mfr. Part No.AZM 161SK-12/12RK-110/230
BrandSchmersal
kr 1 800,75
Each
Units
- AZM 161 - - Power to Unlock No - 110 V ac, 230 V ac Various Options - 4NC M16 90mm Plastic
RS Stock No. 357-9199
Mfr. Part No.440G-T27127
kr 2 489,55
Each
Units
TLS-2-GD2 440G-T - - Power to Lock - - 24 V ac/dc - - 2NC M20 126mm Plastic
RS Stock No. 880-1738
Mfr. Part No.AZM300B-ST-1P2P
BrandSchmersal
kr 5 090,83
Each
Units
- AZM 300 - - Power to Unlock No - 24 V dc Various Options - 2 PNP M12 85mm Plastic
New
RS Stock No. 214-6733
Mfr. Part No.D4NL-1HFG-B
BrandOmron
kr 2 208,38
Each
Units
- D4NL - 3NC + 2NC Power to Lock - - 24 V dc - - - - - -
RS Stock No. 763-7075
Mfr. Part No.3SE5312-0SG11
BrandSiemens
kr 4 826,90
Each
Units
Sirius 3SE5 - - Power to Lock - - 24 V dc Various Options - 2NC M20 54mm Metal
RS Stock No. 617-5138
Mfr. Part No.AZM415-11/11 ZPKE 230VAC-M20
BrandSchmersal
kr 3 889,53
Each
Units
- AZM 415 - - Power to Unlock No - 230 V ac Various Options - 2NC 1/2 NPT 100mm Metal
RS Stock No. 739-0583
Mfr. Part No.XCSLF3535312
kr 2 861,39
Each
Units
Preventa XCS-LF - - Power to Unlock Yes - 24 V ac/dc Key - 2NO/1NC M20 205mm Metal
RS Stock No. 151-2551
Mfr. Part No.440G-LZS21UTRA
kr 2 821,08
Each
Units
- 440G-LZ - - Power to Unlock Yes - 24 V dc Unique RFID Coded Bolt - - - 45mm ABS
RS Stock No. 617-5087
Mfr. Part No.AZM 161SK-12/12RKA-024
BrandSchmersal
kr 1 954,98
Each
Units
- AZM 161 - - Power to Lock No - 24 V ac/dc Various Options - 4NC M16 90mm Plastic
RS Stock No. 357-9313
Mfr. Part No.440G-T27132
kr 2 772,21
Each
Units
TLS-2-GD2 440G-T - - Power to Lock - - 110 V ac - - 2NC M20 126mm Plastic
RS Stock No. 862-1683
Mfr. Part No.D4SL-N4RFA-DN
BrandOmron
kr 1 849,66
Each
Units
- D4SL-N - - Power to Unlock No - 24 V dc Various Options - 3NC M20 39mm Metal
RS Stock No. 826-3962
Mfr. Part No.221304
BrandIDEM
kr 1 647,13
Each
Units
LEILOCK KL1-P - - Power to Unlock No - 110 V ac Various Options - 2NC M20 143mm Plastic
RS Stock No. 880-1842
Mfr. Part No.EX-AZM 161SK-12/12RK-024-3D
BrandSchmersal
kr 2 891,15
Each
Units
- EX-AZM 161 - - Power to Unlock No - 24 V ac/dc Various Options - 2NC/2NO M16 130mm Plastic
New
RS Stock No. 214-6734
Mfr. Part No.D4NL-2AFA-B4
BrandOmron
kr 1 997,14
Each
Units
- D4NL - 1NC/1NO + 1NC/1NO Power to Unlock - - 24 V dc - - - - - -
RS Stock No. 617-5144
Mfr. Part No.AZM415-11/11 ZPKE 110VAC-M20
BrandSchmersal
kr 2 212,83
Each
Units
- AZM 415 - - Power to Unlock No - 110 V ac Various Options - 2NC 1/2 NPT 100mm Metal
RS Stock No. 739-0640
Mfr. Part No.XCS LE2727313
kr 1 645,05
Each
Units
Preventa XCS-LE - - Power to Unlock Yes - 24 V ac/dc Key - 2NC 1/2 in 205mm Plastic