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 Power to Lock / Unlock Series Supply Voltage Actuator Included Range Actuator Type Safety Contacts Conduit Entry Normal State Configuration Auxiliary Contacts Length Housing Material Rated stroke Width
RS Stock No. 746-7208
Mfr. Part No.D4BL-1CRA-A
BrandOmron
HK$4,682.46
Each
units
Power to Unlock D4BL 24 V dc - - Various Options 1NC/1NO 1/2 NPT - 1NC 116.5mm Metal - 123.5mm
RS Stock No. 263-3769
Mfr. Part No.XCSE7332
HK$3,069.49
Each
units
Power to Unlock XCS-E 110/120 V ac Yes Preventa Key 1NO/2NC PG13.5 - - 98mm Metal - 44mm
RS Stock No. 763-7047
Mfr. Part No.3SE5312-0SB11
BrandSiemens
HK$3,926.13
Each
units
Power to Lock 3SE5 24 V dc - Sirius Various Options 2NC M20 - 1NO 54mm Metal - 43.8mm
RS Stock No. 880-1772
Mfr. Part No.AZM 200SK-T-1P2PW
BrandSchmersal
HK$4,264.50
Each
units
Power to Unlock AZM 200 24 V dc No - Various Options 2 PNP 1/2 NPT - 1 PNP 40mm Plastic - 220mm
RS Stock No. 741-8685
Mfr. Part No.AZM 170-02ZRKA 24 VAC/DC
BrandSchmersal
HK$3,141.12
Each
units
Power to Lock AZM 170 24 V ac/dc No - Various Options 2NC 1/2 NPT - - 30mm Plastic - 90mm
RS Stock No. 617-5144
Mfr. Part No.AZM415-11/11 ZPKE 110VAC-M20
BrandSchmersal
HK$4,283.57
Each
units
Power to Unlock AZM 415 110 V ac No - Various Options 2NC 1/2 NPT - 2NO 100mm Metal - 46.5mm
RS Stock No. 880-1703
Mfr. Part No.AZM300Z-ST-1P2P
BrandSchmersal
HK$5,091.21
Each
units
Power to Unlock AZM 300 24 V dc No - Various Options 2 PNP 1/2 NPT - 1 PNP 85mm Plastic - 100mm
RS Stock No. 397-2188
Mfr. Part No.XCSE7311
HK$3,448.14
Each
units
Power to Unlock XCS-E 24 V ac/dc Yes Preventa Key 1NO/2NC PG13.5 - - 98mm Metal - 44mm
RS Stock No. 617-5122
Mfr. Part No.AZM415-11/11 ZPKE 24VAC/DC-M20
BrandSchmersal
HK$4,283.57
Each
units
Power to Unlock AZM 415 24 V ac/dc No - Various Options 2NC 1/2 NPT - 2NO 100mm Metal - 46.5mm
RS Stock No. 880-1898
Mfr. Part No.MZM 100 ST2-1P2PWREM-A
BrandSchmersal
HK$7,751.08
Each
units
Power to Lock MZM 100 24 V dc No - Straight 2 PNP M12 - 1 PNP 40mm Plastic - 179mm
RS Stock No. 617-5138
Mfr. Part No.AZM415-11/11 ZPKE 230VAC-M20
BrandSchmersal
HK$4,283.57
Each
units
Power to Unlock AZM 415 230 V ac No - Various Options 2NC 1/2 NPT - 2NO 100mm Metal - 46.5mm
RS Stock No. 252-3791
Mfr. Part No.XCSE5311
HK$5,027.03
Each
units
Power to Unlock XCS-E 24 V ac/dc Yes Preventa Key 2NO/1NC PG13.5 - - 98mm Metal - 44mm
RS Stock No. 617-5065
Mfr. Part No.AZM 161SK-12/12RK-024
BrandSchmersal
HK$2,475.08
Each
units
Power to Unlock AZM 161 24 V ac/dc No - Various Options 4NC M16 - 2NO 90mm Plastic - 30mm
RS Stock No. 880-1707
Mfr. Part No.AZM300Z-ST-1P2P-A
BrandSchmersal
HK$4,993.84
Each
units
Power to Lock AZM 300 24 V dc No - Various Options 2 PNP 1/2 NPT - 1 PNP 85mm Plastic - 100mm
RS Stock No. 880-1788
Mfr. Part No.AZM 200ST2-T-1P2PW
BrandSchmersal
HK$6,021.97
Each
units
Power to Unlock AZM 200 24 V dc No - Various Options 2 PNP M12 - 1 PNP 40mm Plastic - 220mm
RS Stock No. 880-1886
Mfr. Part No.MZM 100 ST2-SD2PREM-A
BrandSchmersal
HK$7,093.02
Each
units
Power to Lock MZM 100 24 V dc No - Straight 2 PNP M12 - - 40mm Plastic - 179mm
RS Stock No. 763-6940
Mfr. Part No.3SE5322-0SE21
BrandSiemens
HK$3,277.87
Each
units
Power to Lock 3SE5 24 V dc - Sirius Various Options 2NC M20 - 1NO 54mm Plastic - 43.8mm
RS Stock No. 498-959
Mfr. Part No.3SE5322-0SD21
BrandSiemens
HK$2,353.89
Each
units
Power to Unlock 3SE5 24 V dc - Sirius Various Options 2NC M20 - 1NO 54mm Plastic - 43.8mm
RS Stock No. 826-3965
Mfr. Part No.221307
BrandIDEM
HK$1,443.73
Each
units
Power to Unlock KL1-P 230 V ac No LEILOCK Various Options 2NC M20 - 1NO 143mm Plastic - 63mm
RS Stock No. 763-7038
Mfr. Part No.3SE5312-1SB11
BrandSiemens
HK$4,021.86
Each
units
Power to Lock 3SE5 24 V dc - Sirius Various Options 2NC M20 - 1NO 54mm Metal - 43.8mm