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. 826-3953
Mfr. Part No.221301
BrandIDEM
HK$1,182.26
Each
units
LEILOCK KL1-P - - - Power to Unlock No Various Options M20 143mm 63mm 41.5mm 24 V ac/dc -
RS Stock No. 757-9200
Mfr. Part No.D4NL-4CFG-B
BrandOmron
HK$1,880.57
Each
units
- D4NL - - - Power to Lock No Various Options M20 95mm 88.5mm 35.5mm 24 V dc -
RS Stock No. 146-5797
Mfr. Part No.AZM170-02ZRIA-B1 24VAC/DC
BrandSchmersal
HK$2,523.28
Each
units
- AZM 170 DP - - Power to Lock Yes Coded M20 90mm 84mm 30mm 24 V ac/dc 24V
RS Stock No. 749-7694
Mfr. Part No.3SE5322-1SB21
BrandSiemens
HK$1,895.71
Each
units
Sirius 3SE5 - - - Power to Unlock No Various Options M20 184.1mm 54mm 39.1mm 230 V ac -
RS Stock No. 133-0066
Mfr. Part No.XCSLF3737512
HK$2,182.14
Each
units
Preventa XCS-LF 3P - - Power to Lock Yes Key M20 44mm 51mm 205mm 24 V ac/dc 240V
RS Stock No. 862-1715
Mfr. Part No.D4SL-N4AFG
BrandOmron
HK$2,207.45
Each
units
- D4SL-N - - - Power to Lock No Various Options M20 39mm 179.5mm 39mm 24 V dc -
RS Stock No. 814-7078
Mfr. Part No.XCSL764F3
HK$7,112.97
Each
units
- XCS-L - - - Power to Unlock Yes Key 1/2 NPT 7.64in 2.99in 1.73in 110 V ac -
RS Stock No. 814-7040
Mfr. Part No.XCSTE7333
HK$3,739.67
Each
units
Preventa XCS-TE - - - Power to Unlock Yes Key 1/2 NPT 3.67in 4.32in 1.3in 120 V ac -
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 -
RS Stock No. 763-6934
Mfr. Part No.3SE5322-0SB23
BrandSiemens
HK$1,728.89
Each
units
Sirius 3SE5 - - - Power to Lock - Various Options M20 54mm 43.8mm 184.1mm 230 V ac -
RS Stock No. 757-9190
Mfr. Part No.D4NL-4AFG-B
BrandOmron
HK$1,842.96
Each
units
- D4NL - - - Power to Lock - Various Options 1/2 NPT 95mm 88.5mm 35.5mm 24 V dc -
RS Stock No. 146-5796
Mfr. Part No.AZM161SK-12/12RIA-024-B1
BrandSchmersal
HK$2,548.79
Each
units
- AZM 161 3P - - Power to Lock Yes Coded M20 130mm 90mm 30mm 24 V ac/dc 24V
RS Stock No. 880-1719
Mfr. Part No.AZM300Z-I2-ST-1P2PA
BrandSchmersal
HK$4,877.32
Each
units
- AZM 300 - - - Power to Lock No Various Options 1/2 NPT 85mm 100mm 35mm 24 V dc -
RS Stock No. 826-3993
Mfr. Part No.201001
BrandIDEM
HK$1,212.04
Each
units
SEZYLOCK KLP - - - Power to Unlock No Various Options M20 160mm 46mm 45.5mm 24 V ac/dc -
RS Stock No. 862-1692
Mfr. Part No.D4SL-N4RFA-D
BrandOmron
HK$1,587.87
Each
units
- D4SL-N - - - Power to Unlock No Various Options M20 39mm 179.5mm 39mm 24 V dc -
RS Stock No. 763-7053
Mfr. Part No.3SE5312-0SE11
BrandSiemens
HK$2,496.49
Each
units
Sirius 3SE5 - - - Power to Lock - Various Options M20 54mm 43.8mm 184.1mm 24 V dc -
RS Stock No. 880-1781
Mfr. Part No.AZM 200ST2-T-SD2P
BrandSchmersal
HK$4,462.40
Each
units
- AZM 200 - - - Power to Lock No Various Options M12 40mm 220mm 50mm 24 V dc -
RS Stock No. 179-7564
BrandRS PRO
HK$208.37
Each
units
- - - 2NC - - - 90° Key PG 13.5 31mm 31mm 95mm 600 V ac 600V
RS Stock No. 763-7139
Mfr. Part No.3SE5312-0SB13
BrandSiemens
HK$2,410.06
Each
units
Sirius 3SE5 - - - Power to Lock - Various Options M20 54mm 43.8mm 184.1mm 230 V ac -
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