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. 862-1683
Mfr. Part No.D4SL-N4RFA-DN
BrandOmron
HK$1,655.37
Each
units
- D4SL-N - - Power to Unlock No Various Options M20 39mm 155mm 39mm 24 V dc - 3NC
RS Stock No. 757-9200
Mfr. Part No.D4NL-4CFG-B
BrandOmron
HK$1,762.90
Each
units
- - - - - - - - - - - - - -
RS Stock No. 757-9216
Mfr. Part No.D4NL-1AFG-B
BrandOmron
HK$1,762.90
Each
units
- D4NL - - Power to Lock - Various Options 1/2 NPT 95mm 88.5mm 35.5mm 24 V dc - NC/NO
RS Stock No. 739-0638
Mfr. Part No.XCSLE2525342
HK$3,177.30
Each
units
Preventa XCS-LE - - Power to Unlock Yes Key M20 205mm 51mm 43.5mm 230 V ac/dc - -
RS Stock No. 861-4657
Mfr. Part No.D4NL-2EFA-B
BrandOmron
HK$1,762.90
Each
units
- D4NL - - Power to Unlock - Various Options 1/2 NPT 39mm 179.5mm 39mm 24 V dc - NC/NO
RS Stock No. 123-7513
Mfr. Part No.205021
BrandIDEM
HK$2,729.32
Each
units
HYGIELOCK KL3-SS-P2L - - Power to Lock No Various Options M20 48mm 177mm 47mm 24 V dc - NC/NO
RS Stock No. 136-3178
Mfr. Part No.6018169055
HK$1,843.00
Each
units
- SLK 4P - Power to Unlock No Various Options M20 42.5mm 51mm 184mm 110 V ac, 230 V ac 110 V, 230 V 2NC
RS Stock No. 301-9978
Mfr. Part No.XCSTE5332
HK$2,425.28
Each
units
Preventa XCS-TE - - Power to Unlock - - M16 93.5mm 33mm 110mm 120 V ac - NC
RS Stock No. 136-3176
Mfr. Part No.6018119061
HK$2,148.74
Each
units
- SLK DP - Power to Unlock No Various Options M20 42.5mm 51mm 184mm 24 V ac/dc 24V NC/NO
RS Stock No. 826-3975
Mfr. Part No.450001
BrandIDEM
HK$1,478.62
Each
units
RAMZLOCK KLTM - - Power to Unlock No Various Options M20 155mm 105mm 46.5mm 24 V dc - 1NO
RS Stock No. 739-0580
Mfr. Part No.XCSLF2525342
HK$4,065.09
Each
units
Preventa XCS-LF - - Power to Unlock Yes Key M20 205mm 51mm 43.5mm 230 V ac/dc - -
RS Stock No. 739-0656
Mfr. Part No.XCSLE3535312
HK$4,065.09
Each
units
Preventa XCS-LE - - Power to Unlock Yes Key 1/2 NPT 205mm 51mm 43.5mm 24 V ac/dc - -
RS Stock No. 744-8654
Mfr. Part No.570001
BrandPilz
HK$1,720.05
Each
units
- - - - - - - - - - - - - -
RS Stock No. 146-5800
Mfr. Part No.AZM170-11ZRI-B1 24VAC/DC
BrandSchmersal
HK$2,473.80
Each
units
- AZM 170 DP - Power to Unlock Yes Coded M20 90mm 84mm 30mm 24 V ac/dc 24V 1NC
RS Stock No. 862-1670
Mfr. Part No.D4SL-N4PFA-DN
BrandOmron
HK$1,655.37
Each
units
- D4SL-N - - Power to Unlock No Various Options M20 39mm 155mm 39mm 24 V dc - 3NC
RS Stock No. 757-9203
Mfr. Part No.D4NL-4EFG-B
BrandOmron
HK$1,762.90
Each
units
- D4NL - - Power to Lock - Various Options M20 95mm 88.5mm 35.5mm 24 V dc - 2NC/1NO
RS Stock No. 146-5797
Mfr. Part No.AZM170-02ZRIA-B1 24VAC/DC
BrandSchmersal
HK$2,473.80
Each
units
- AZM 170 DP - Power to Lock Yes Coded M20 90mm 84mm 30mm 24 V ac/dc 24V -
RS Stock No. 862-1712
Mfr. Part No.D4SL-N4EFG-D
BrandOmron
HK$1,522.66
Each
units
- - - - - - - - - - - - - -
RS Stock No. 880-1779
Mfr. Part No.AZM 200ST2-T-1P2P
BrandSchmersal
HK$4,685.25
Each
units
- AZM 200 - - Power to Unlock No Various Options M12 40mm 220mm 50mm 24 V dc - 1 PNP
RS Stock No. 146-5795
Mfr. Part No.AZM161SK-12/12RI-024-B1
BrandSchmersal
HK$2,610.93
Each
units
- - - - - - - - - - - - - -
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