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 Actuator Type Interface Conduit Entry Length Width Depth Supply Voltage Maximum AC Voltage
RS Stock No. 739-0640
Mfr. Part No.XCS LE2727313
£121.00
Each
Units
Preventa XCS-LE - - Power to Unlock Yes Key - 1/2 in 205mm 51mm 43.5mm 24 V ac/dc -
RS Stock No. 742-0707
Mfr. Part No.AZM 170-11ZRK 230 VAC
BrandSchmersal
£170.76
Each
Units
- AZM 170 - - Power to Unlock No Various Options - 1/2 NPT 30mm 90mm 84mm 230 V ac -
RS Stock No. 763-7038
Mfr. Part No.3SE5312-1SB11
BrandSiemens
£222.95
Each
Units
Sirius 3SE5 - - Power to Lock - Various Options - M20 54mm 43.8mm 184.1mm 24 V dc -
RS Stock No. 746-7198
Mfr. Part No.D4BL-1CRA
BrandOmron
£238.50
Each
Units
- D4BL - - Power to Unlock - Various Options - 1/2 NPT 116.5mm 123.5mm 46.3mm 24 V dc -
RS Stock No. 252-3820
Mfr. Part No.XCSE5511
£314.45
Each
Units
Preventa XCS-E - - Power to Lock Yes Key - PG13.5 98mm 44mm 146mm 24 V ac/dc -
RS Stock No. 757-9207
Mfr. Part No.D4NL-1CFG-B
BrandOmron
£154.10
Each
Units
- D4NL - - Power to Lock No Various Options - 1/2 NPT 95mm 88.5mm 35.5mm 24 V dc -
RS Stock No. 263-3769
Mfr. Part No.XCSE7332
£323.00
Each
Units
Preventa XCS-E - - Power to Unlock Yes Key - PG13.5 98mm 44mm 146mm 110/120 V ac -
RS Stock No. 810-4074
Mfr. Part No.440G-LZS21UPRH
£209.00
Each
Units
- 440G-LZ - - Power to Unlock Yes Unique Guardlink M12 140mm 45mm 50mm 24 V dc -
RS Stock No. 739-0600
Mfr. Part No.XCS LF3737313
£267.00
Each
Units
Preventa XCS-LF - - Power to Unlock Yes Key - 1/2 in 205mm 51mm 43.5mm 24 V ac/dc -
RS Stock No. 739-0559
Mfr. Part No.XCSLF2727312
£130.00
Each
Units
Preventa XCS-LF - - Power to Unlock Yes Key - M20 205mm 51mm 43.5mm 24 V ac/dc -
RS Stock No. 749-7690
Mfr. Part No.3SE5312-0SD13
BrandSiemens
£204.53
Each
Units
Sirius 3SE5 - - Power to Unlock No Various Options - M20 184.1mm 54mm 55.7mm 230 V ac -
RS Stock No. 763-7053
Mfr. Part No.3SE5312-0SE11
BrandSiemens
£229.71
Each
Units
Sirius 3SE5 - - Power to Lock - Various Options - M20 54mm 43.8mm 184.1mm 24 V dc -
RS Stock No. 763-7075
Mfr. Part No.3SE5312-0SG11
BrandSiemens
£265.33
Each
Units
Sirius 3SE5 - - Power to Lock - Various Options - M20 54mm 43.8mm 184.1mm 24 V dc -
RS Stock No. 880-1905
Mfr. Part No.MZM 100 B ST2-SD2PRE-A
BrandSchmersal
£606.55
Each
Units
- MZM 100 B - - Power to Lock No Straight - M12 40mm 179mm 40mm 24 V dc -
RS Stock No. 880-1892
Mfr. Part No.MZM 100 ST2-1P2PWRE-A
BrandSchmersal
£556.43
Each
Units
- MZM 100 - - Power to Lock No Straight - M12 40mm 179mm 40mm 24 V dc -
RS Stock No. 880-1738
Mfr. Part No.AZM300B-ST-1P2P
BrandSchmersal
£397.95
Each
Units
- AZM 300 - - Power to Unlock No Various Options - M12 85mm 100mm 35mm 24 V dc -
RS Stock No. 763-6996
Mfr. Part No.3SE5322-1SG21
BrandSiemens
£230.94
Each
Units
Sirius 3SE5 - - Power to Lock - Various Options - M20 54mm 43.8mm 184.1mm 24 V dc -
RS Stock No. 757-9190
Mfr. Part No.D4NL-4AFG-B
BrandOmron
£154.10
Each
Units
- D4NL - - Power to Lock - Various Options - 1/2 NPT 95mm 88.5mm 35.5mm 24 V dc -
RS Stock No. 862-1706
Mfr. Part No.D4SL-N4CFA
BrandOmron
£127.30
Each
Units
- D4SL-N - - Power to Unlock No Various Options - M20 39mm 179.5mm 39mm 24 V dc -
RS Stock No. 617-5138
Mfr. Part No.AZM415-11/11 ZPKE 230VAC-M20
BrandSchmersal
£341.35
Each
Units
- AZM 415 - - Power to Unlock No Various Options - 1/2 NPT 100mm 46.5mm 130mm 230 V ac -
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