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 Conduit Entry Length Width Depth Supply Voltage Maximum AC Voltage
RS Stock No. 820-3783
Mfr. Part No.D4SLN4PDAD
BrandOmron
TWD6,903.00
Each
units
- D4SL-N - - - Power to Unlock No Various Options M20 39mm 39mm 179.9mm 24 V dc -
RS Stock No. 814-7078
Mfr. Part No.XCSL764F3
TWD26,849.00
Each
units
- XCS-L - - - Power to Unlock Yes Key 1/2 NPT 7.64in 2.99in 1.73in 110 V ac -
RS Stock No. 763-7139
Mfr. Part No.3SE5312-0SB13
BrandSiemens
TWD13,747.00
Each
units
Sirius 3SE5 - - - Power to Lock - Various Options M20 54mm 43.8mm 184.1mm 230 V ac -
RS Stock No. 862-1699
Mfr. Part No.D4SL-N4QFA-D
BrandOmron
TWD6,156.00
Each
units
- D4SL-N - - - Power to Unlock No Various Options M20 39mm 179.5mm 39mm 24 V dc -
RS Stock No. 861-4657
Mfr. Part No.D4NL-2EFA-B
BrandOmron
TWD7,145.00
Each
units
- D4NL - - - Power to Unlock - Various Options 1/2 NPT 39mm 179.5mm 39mm 24 V dc -
RS Stock No. 739-0656
Mfr. Part No.XCSLE3535312
TWD6,697.00
Each
units
Preventa XCS-LE - - - Power to Unlock Yes Key 1/2 NPT 205mm 51mm 43.5mm 24 V ac/dc -
RS Stock No. 739-0666
Mfr. Part No.XCSLE3838312
TWD5,928.00
Each
units
Preventa XCS-LE - - - Power to Unlock Yes Key M20 205mm 51mm 43.5mm 24 V ac/dc -
RS Stock No. 862-1670
Mfr. Part No.D4SL-N4PFA-DN
BrandOmron
TWD6,537.00
Each
units
- D4SL-N - - - Power to Unlock No Various Options M20 39mm 155mm 39mm 24 V dc -
RS Stock No. 198-655
Mfr. Part No.XCSTE7341
TWD9,216.00
Each
units
Preventa XCS TE - - - Power to Unlock - - PG11, 1/2 in 94mm 110mm 33mm 230 V ac/dc -
RS Stock No. 862-1706
Mfr. Part No.D4SL-N4CFA
BrandOmron
TWD5,646.00
Each
units
- D4SL-N - - - Power to Unlock No Various Options M20 39mm 179.5mm 39mm 24 V dc -
RS Stock No. 741-8679
Mfr. Part No.AZM 170-02ZRK 24 VAC/DC
BrandSchmersal
TWD6,694.00
Each
units
- AZM 170 - - - Power to Unlock No Various Options 1/2 NPT 30mm 90mm 84mm 24 V ac/dc -
RS Stock No. 133-0068
Mfr. Part No.XCSLE2727512
TWD5,383.00
Each
units
Preventa XCS-LE DP - - Power to Lock No Key M20 44mm 51mm 205mm 24 V ac/dc 240V
RS Stock No. 820-3796
Mfr. Part No.D4SLN4QDAD
BrandOmron
TWD6,776.00
Each
units
- D4SL-N - - - Power to Unlock No Various Options M20 39mm 39mm 179.9mm 24 V dc -
RS Stock No. 739-0603
Mfr. Part No.XCS LF3535343
TWD24,062.00
Each
units
Preventa XCS-LF - - - Power to Unlock Yes Key 1/2 in 205mm 51mm 43.5mm 230 V ac/dc -
RS Stock No. 617-5144
Mfr. Part No.AZM415-11/11 ZPKE 110VAC-M20
BrandSchmersal
TWD15,349.00
Each
units
- AZM 415 - - - Power to Unlock No Various Options 1/2 NPT 100mm 46.5mm 130mm 110 V ac -
RS Stock No. 862-1686
Mfr. Part No.D4SL-N4NFA-D
BrandOmron
TWD6,156.00
Each
units
- D4SL-N - - - Power to Unlock No Various Options M20 39mm 179.5mm 39mm 24 V dc -
RS Stock No. 746-7286
Mfr. Part No.D4NL-4CFA-B
BrandOmron
TWD7,099.00
Each
units
- D4NL - - - Power to Unlock - Various Options M20 88.5mm 95mm 35.5mm 24 V dc -
RS Stock No. 739-0669
Mfr. Part No.XCSLE3737312
TWD6,166.00
Each
units
Preventa XCS-LE - - - Power to Unlock Yes Key M20 205mm 51mm 43.5mm 24 V ac/dc -
RS Stock No. 178-3144
Mfr. Part No.8 10 BJ 28
BrandMecalectro
TWD6,699.00
Each
units
- - - - - Power to Lock No Various Options - 65mm 30mm 30mm 24 V dc -
RS Stock No. 749-7694
Mfr. Part No.3SE5322-1SB21
BrandSiemens
TWD11,382.00
Each
units
Sirius 3SE5 - - - Power to Unlock No Various Options M20 184.1mm 54mm 39.1mm 230 V ac -