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 Rated stroke Power to Lock / Unlock Actuator Included Actuator Type Interface Conduit Entry Length Width Depth Supply Voltage
New
RS Stock No. 206-5774
Mfr. Part No.103013909
£482.89
Each
Units
AZM201 AZM201Z-ST2-T-1P2PW 1P-Diagnostic, 2P-Safety - 7.5 +0.5/-2.5mm Power to Unlock - - - - - - - 26.4 V dc
RS Stock No. 151-2401
Mfr. Part No.442G-MABH-L
£279.15
Each
Units
- 442G - - - - - - - - 289.3mm 114mm 174mm -
RS Stock No. 151-2449
Mfr. Part No.442G-MABL-UT-C05
£763.77
Each
Units
- 442G - - - Power to Lock Yes Unique RFID Coded Bolt - M20 285.3mm 114mm 174mm 5 → 24 V dc
RS Stock No. 151-2467
Mfr. Part No.442G-MABLB-UL-E0JP4679
£1,691.51
Each
Units
- 442G - - - Power to Lock Yes Unique RFID Coded Bolt - M12 x 2 285.3mm 114mm 174mm 5 → 24 V dc
RS Stock No. 151-2442
Mfr. Part No.442G-MABL-UT-C04
£759.62
Each
Units
- 442G - - - Power to Lock Yes Unique RFID Coded Bolt - M20 285.3mm 114mm 174mm 5 → 24 V dc
RS Stock No. 133-0066
Mfr. Part No.XCSLF3737512
£214.70
Each
Units
Preventa XCS-LF 3P - - Power to Lock Yes Key - M20 44mm 51mm 205mm 24 V ac/dc
New
RS Stock No. 206-5771
Mfr. Part No.103016780
£430.72
Each
Units
AZM201 AZM201Z-I2-SK-T-1P2PW-A 1P-Diagnostic, 2P-Safety - 7.5 +0.5/-2.5mm Power to Lock - - - - - - - 26.4 V dc
RS Stock No. 151-2464
Mfr. Part No.442G-MABRB-UR-E0JP4679
£1,691.51
Each
Units
- 442G - - - Power to Unlock Yes Unique RFID Coded Bolt - M12 x 2 285.3mm 114mm 113.9mm 5 → 24 V dc
RS Stock No. 151-2426
Mfr. Part No.442G-MABL-URM-C00
£658.96
Each
Units
- 442G - - - Power to Lock Yes Unique RFID Coded Bolt - M23 285.3mm 114mm 113.9mm 5 → 24 V dc
RS Stock No. 151-2551
Mfr. Part No.440G-LZS21UTRA
£232.45
Each
Units
- 440G-LZ - - - Power to Unlock Yes Unique RFID Coded Bolt - - 45mm 162.9mm 50mm 24 V dc
RS Stock No. 151-2438
Mfr. Part No.442G-MABL-ULM-C02
£792.83
Each
Units
- 442G - - - Power to Lock Yes Unique RFID Coded Bolt - M23 285.3mm 114mm 174mm 5 → 24 V dc
RS Stock No. 151-2555
Mfr. Part No.440G-LZS21UTLA
£135.52
Each
Units
- 440G-LZ - - - Power to Lock Yes Unique RFID Coded Bolt - - 45mm 162.9mm 50mm 24 V dc
RS Stock No. 136-3176
Mfr. Part No.6018119061
£190.44
Each
Units
- SLK DP - - Power to Unlock No Various Options - M20 42.5mm 51mm 184mm 24 V ac/dc
RS Stock No. 146-5797
Mfr. Part No.AZM170-02ZRIA-B1 24VAC/DC
BrandSchmersal
£215.22
Each
Units
- AZM 170 DP - - Power to Lock Yes Coded - M20 90mm 84mm 30mm 24 V ac/dc
RS Stock No. 151-2433
Mfr. Part No.442G-MABR-ULM-C00
£658.96
Each
Units
- 442G - - - Power to Unlock Yes Unique RFID Coded Bolt - M23 285.3mm 114mm 174mm 5 → 24 V dc
RS Stock No. 151-2416
Mfr. Part No.442G-MABL-UT-C00
£563.49
Each
Units
- 442G - - - Power to Lock Yes Unique RFID Coded Bolt - M20 285.3mm 114mm 174mm 5 → 24 V dc
RS Stock No. 151-2547
Mfr. Part No.440G-LZS21STLA
£208.58
Each
Units
- 440G-LZ - - - Power to Lock Yes Standard - - 45mm 162.9mm 50mm 24 V dc
RS Stock No. 151-2544
Mfr. Part No.440G-LZS21STRA
£208.58
Each
Units
- 440G-LZ - - - Power to Unlock Yes Standard - - 45mm 162.9mm 50mm 24 V dc
RS Stock No. 739-0561
Mfr. Part No.XCSLF2727313
£162.00
Each
Units
Preventa XCS-LF - - - Power to Unlock Yes Key - 1/2 in 205mm 51mm 43.5mm 24 V ac/dc
RS Stock No. 151-2557
Mfr. Part No.440G-LZS21UTLH
£232.45
Each
Units
- 440G-LZ - - - Power to Lock Yes Unique RFID Coded Bolt - M12 45mm 162.9mm 50mm 24 V dc