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 Conduit Entry Length Width Depth Supply Voltage Maximum AC Voltage Auxiliary Contacts
RS Stock No. 617-5100
Mfr. Part No.AZM 161SK-12/12RKA-110/230
BrandSchmersal
$401.08
Each
units
- AZM 161 - - Power to Lock No Various Options M16 90mm 30mm 130mm 110 V ac, 230 V ac - 2NO
RS Stock No. 746-7223
Mfr. Part No.D4JL-4NFA-C5
BrandOmron
$508.52
Each
units
- D4JL - - Power to Unlock - - 1/2 NPT 114mm 132.9mm 36.5mm 24 V dc - 2NC/1NO
RS Stock No. 498-971
Mfr. Part No.3SE5312-1SJ11
BrandSiemens
$552.99
Each
units
Sirius 3SE5 - - Power to Unlock - Various Options M20 54mm 43.8mm 159mm 24 V dc - 1NO
RS Stock No. 739-0600
Mfr. Part No.XCS LF3737313
$605.23
Each
units
Preventa XCS-LF - - Power to Unlock Yes Key 1/2 in 205mm 51mm 43.5mm 24 V ac/dc - -
RS Stock No. 739-0583
Mfr. Part No.XCSLF3535312
$473.83
Each
units
Preventa XCS-LF - - Power to Unlock Yes Key M20 205mm 51mm 43.5mm 24 V ac/dc - -
RS Stock No. 757-9190
Mfr. Part No.D4NL-4AFG-B
BrandOmron
$374.25
Each
units
- D4NL - - Power to Lock - Various Options 1/2 NPT 95mm 88.5mm 35.5mm 24 V dc - NC/NO
RS Stock No. 763-6934
Mfr. Part No.3SE5322-0SB23
BrandSiemens
$340.67
Each
units
Sirius 3SE5 - - Power to Lock - Various Options M20 54mm 43.8mm 184.1mm 230 V ac - 1NO
RS Stock No. 263-3775
Mfr. Part No.XCSE5512
$681.34
Each
units
Preventa XCS-E - - Power to Lock Yes Key PG13.5 98mm 44mm 146mm 24 V ac/dc - -
RS Stock No. 820-3787
Mfr. Part No.D4SLN4PDGD
BrandOmron
$429.96
Each
units
- D4SL-N - - Power to Lock No Various Options M20 39mm 39mm 179.9mm 24 V dc - 3NC
RS Stock No. 880-1738
Mfr. Part No.AZM300B-ST-1P2P
BrandSchmersal
$852.21
Each
units
- AZM 300 - - Power to Unlock No Various Options M12 85mm 100mm 35mm 24 V dc - 1 PNP
RS Stock No. 880-1895
Mfr. Part No.MZM 100 ST2-SD2PRE-A
BrandSchmersal
$992.61
Each
units
- MZM 100 - - Power to Lock No Straight M12 40mm 179mm 40mm 24 V dc - -
RS Stock No. 880-1766
Mfr. Part No.RSS 36-SD-ST
BrandSchmersal
$254.66
Each
units
- RSS 36 - - - No - M12 27mm 108.2mm 35mm 24 V dc - -
RS Stock No. 826-4016
Mfr. Part No.209001-PB
BrandIDEM
$576.11
Each
units
HYGIELOCK KL4-SS - - Power to Unlock No Various Options M20 198mm 48mm 47mm 24 V ac/dc - 1NO
RS Stock No. 862-1683
Mfr. Part No.D4SL-N4RFA-DN
BrandOmron
$309.88
Each
units
- D4SL-N - - Power to Unlock No Various Options M20 39mm 155mm 39mm 24 V dc - 3NC
RS Stock No. 263-3797
Mfr. Part No.XCSE7512
$704.55
Each
units
Preventa XCS-E - - Power to Lock Yes Key PG13.5 98mm 44mm 146mm 24 V ac/dc - -
RS Stock No. 862-1677
Mfr. Part No.D4SL-N4NFA-DN
BrandOmron
$376.22
Each
units
- D4SL-N - - Power to Unlock No Various Options M20 39mm 155mm 39mm 24 V dc - 2NC/1NO
RS Stock No. 746-7198
Mfr. Part No.D4BL-1CRA
BrandOmron
$510.75
Each
units
- D4BL - - Power to Unlock - Various Options 1/2 NPT 116.5mm 123.5mm 46.3mm 24 V dc - 1NC
RS Stock No. 880-1707
Mfr. Part No.AZM300Z-ST-1P2P-A
BrandSchmersal
$852.21
Each
units
- AZM 300 - - Power to Lock No Various Options 1/2 NPT 85mm 100mm 35mm 24 V dc - 1 PNP
RS Stock No. 862-1674
Mfr. Part No.D4SL-N4QFA-DN
BrandOmron
$309.88
Each
units
- D4SL-N - - Power to Unlock No Various Options M20 39mm 155mm 39mm 24 V dc - 2NC/1NO
RS Stock No. 880-1719
Mfr. Part No.AZM300Z-I2-ST-1P2PA
BrandSchmersal
$930.85
Each
units
- AZM 300 - - Power to Lock No Various Options 1/2 NPT 85mm 100mm 35mm 24 V dc - 1 PNP
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