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 Safety Contacts Conduit Entry Length Housing Material Width
RS Stock No. 136-3174
Mfr. Part No.6018119045
MYR1,305.61
Each
units
- SLK DP - Power to Unlock No - 24 V ac/dc Various Options 1NO/1NC M20 42.5mm Plastic 51mm
RS Stock No. 179-7564
BrandRS PRO
MYR146.70
Each
units
- - - 2NC - - - 600 V ac 90° Key - PG 13.5 31mm Plastic 31mm
RS Stock No. 880-1716
Mfr. Part No.AZM300Z-I2-ST-1P2P
BrandSchmersal
MYR3,095.41
Each
units
- AZM 300 - - Power to Unlock No - 24 V dc Various Options 2 PNP M12 85mm Plastic 100mm
New
RS Stock No. 214-6736
Mfr. Part No.D4SL-N4DFA
BrandOmron
MYR758.71
Each
units
- D4SL - 2NC + 2NC Power to Unlock - - 24 V dc - - - - - -
RS Stock No. 136-3175
Mfr. Part No.6018119046
MYR1,338.83
Each
units
- SLK DP - Power to Unlock No - 110 V ac, 230 V ac Various Options 1NO/1NC M20 42.5mm Plastic 51mm
RS Stock No. 880-1738
Mfr. Part No.AZM300B-ST-1P2P
BrandSchmersal
MYR2,833.92
Each
units
- AZM 300 - - Power to Unlock No - 24 V dc Various Options 2 PNP M12 85mm Plastic 100mm
RS Stock No. 880-1905
Mfr. Part No.MZM 100 B ST2-SD2PRE-A
BrandSchmersal
MYR4,319.42
Each
units
- MZM 100 B - - Power to Lock No - 24 V dc Straight 2 PNP M12 40mm Plastic 179mm
RS Stock No. 146-5798
Mfr. Part No.AZM170-02ZRI-B1 24VAC/DC
BrandSchmersal
MYR1,532.64
Each
units
- AZM 170 DP - Power to Unlock Yes - 24 V ac/dc Coded 2NC M20 90mm Plastic 84mm
RS Stock No. 880-1719
Mfr. Part No.AZM300Z-I2-ST-1P2PA
BrandSchmersal
MYR3,095.41
Each
units
- AZM 300 - - Power to Lock No - 24 V dc Various Options 2 PNP 1/2 NPT 85mm Plastic 100mm
RS Stock No. 198-740
Mfr. Part No.XCSE7321
MYR2,015.32
Each
units
Preventa XCS E - - Power to Unlock Yes - 48 V ac/dc Key 1NO/2NC PG13.5 146mm Metal 98mm
RS Stock No. 814-7078
Mfr. Part No.XCSL764F3
MYR1,881.02
Each
units
- XCS-L - - Power to Unlock Yes - 110 V ac Key 1NO/2NC 1/2 NPT 7.64in Metal 2.99in
RS Stock No. 826-3981
Mfr. Part No.450201
BrandIDEM
MYR1,621.94
Each
units
RAMZLOCK KLTM-RFID - - Power to Unlock Yes - 24 V dc Coded RFID 2NC M20 155mm Metal 105mm
RS Stock No. 880-1788
Mfr. Part No.AZM 200ST2-T-1P2PW
BrandSchmersal
MYR3,420.71
Each
units
- AZM 200 - - Power to Unlock No - 24 V dc Various Options 2 PNP M12 40mm Plastic 220mm
RS Stock No. 763-6940
Mfr. Part No.3SE5322-0SE21
BrandSiemens
MYR1,836.82
Each
units
Sirius 3SE5 - - Power to Lock - - 24 V dc Various Options 2NC M20 54mm Plastic 43.8mm
RS Stock No. 763-7090
Mfr. Part No.3SE5312-1SG11
BrandSiemens
MYR2,798.67
Each
units
Sirius 3SE5 - - Power to Lock - - 24 V dc Various Options 2NC M20 54mm Metal 43.8mm
RS Stock No. 206-5774
Mfr. Part No.103013909
MYR3,438.80
Each
units
AZM201 AZM201Z-ST2-T-1P2PW 1P-Diagnostic, 2P-Safety - Power to Unlock - 7.5 +0.5/-2.5mm 26.4 V dc - - - - - -
RS Stock No. 133-0066
Mfr. Part No.XCSLF3737512
MYR1,468.61
Each
units
Preventa XCS-LF 3P - Power to Lock Yes - 24 V ac/dc Key 1NO/2NC M20 44mm Zamak 51mm
RS Stock No. 609-6732
Mfr. Part No.XCSE7511
MYR2,001.57
Each
units
Preventa XCS-B - - Power to Lock Yes - 24 V ac/dc Key 1NO/2NC PG13.5 98mm Metal 44mm
RS Stock No. 146-5795
Mfr. Part No.AZM161SK-12/12RI-024-B1
BrandSchmersal
MYR1,617.60
Each
units
- AZM 161 3P - Power to Unlock Yes - 24 V ac/dc Coded 4NC M20 130mm Plastic 90mm
RS Stock No. 814-7062
Mfr. Part No.XCSE5313
MYR2,287.91
Each
units
Preventa XCS-E - - Power to Unlock Yes - 24 V ac/dc Key 2NO/1NC M20 146mm Metal 98mm