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. 763-7069
Mfr. Part No.3SE5312-0SF11
BrandSiemens
HK$2,657.77
Each
units
Sirius 3SE5 - - Power to Lock - Various Options M20 54mm 43.8mm 184.1mm 24 V dc - 1NO
RS Stock No. 840-2732
Mfr. Part No.SI-LS42DSH
BrandBanner
HK$2,628.82
Each
units
- SI-LS42 - - Power to Unlock No Various Options M20 42.5mm 170mm 45mm 24 V ac/dc - -
RS Stock No. 820-3803
Mfr. Part No.D4SLN4RDGD
BrandOmron
HK$1,566.40
Each
units
- D4SL-N - - Power to Lock No Various Options M20 39mm 39mm 179.9mm 24 V dc - 3NC
RS Stock No. 826-3975
Mfr. Part No.450001
BrandIDEM
HK$1,457.96
Each
units
RAMZLOCK KLTM - - Power to Unlock No Various Options M20 155mm 105mm 46.5mm 24 V dc - 1NO
RS Stock No. 862-1703
Mfr. Part No.D4SL-N4CFG
BrandOmron
HK$1,304.60
Each
units
- D4SL-N - - Power to Lock No Various Options M20 39mm 179.5mm 39mm 24 V dc - NC/NO
RS Stock No. 892-9031
Mfr. Part No.MA2M6SL411
BrandFortress
HK$4,604.69
Each
units
AmGardpro proAM / proLok - - Power to Unlock Yes Handle M12 182.4mm 80mm 40mm 24 V dc - 1NO
RS Stock No. 198-655
Mfr. Part No.XCSTE7341
HK$1,764.99
Each
units
Preventa XCS TE - - Power to Unlock - - PG11, 1/2 in 94mm 110mm 33mm 230 V ac/dc - NC
RS Stock No. 814-7040
Mfr. Part No.XCSTE7333
HK$2,255.63
Each
units
Preventa XCS-TE - - Power to Unlock Yes Key 1/2 NPT 3.67in 4.32in 1.3in 120 V ac - 1NC
RS Stock No. 763-6952
Mfr. Part No.3SE5322-0SE23
BrandSiemens
HK$2,151.64
Each
units
Sirius 3SE5 - - Power to Lock - Various Options M20 54mm 43.8mm 184.1mm 230 V ac - 1NO
RS Stock No. 498-983
Mfr. Part No.3SE5322-1SD21
BrandSiemens
HK$1,520.00
Each
units
Sirius 3SE5 - - Power to Unlock - Various Options M20 54mm 43.8mm 159mm 24 V dc - 1NO
RS Stock No. 861-4657
Mfr. Part No.D4NL-2EFA-B
BrandOmron
HK$1,579.60
Each
units
- D4NL - - Power to Unlock - Various Options 1/2 NPT 39mm 179.5mm 39mm 24 V dc - NC/NO
RS Stock No. 757-9216
Mfr. Part No.D4NL-1AFG-B
BrandOmron
HK$1,579.60
Each
units
- D4NL - - Power to Lock - Various Options 1/2 NPT 95mm 88.5mm 35.5mm 24 V dc - NC/NO
RS Stock No. 746-7286
Mfr. Part No.D4NL-4CFA-B
BrandOmron
HK$1,802.32
Each
units
- D4NL - - Power to Unlock - Various Options M20 88.5mm 95mm 35.5mm 24 V dc - NC/NO
RS Stock No. 746-7277
Mfr. Part No.D4NL-4AFA-B
BrandOmron
HK$1,802.32
Each
units
- D4NL - - Power to Unlock - Various Options 1/2 NPT 88.5mm 95mm 35.5mm 24 V dc - NC/NO
RS Stock No. 178-3144
Mfr. Part No.8 10 BJ 28
BrandMecalectro
HK$1,499.56
Each
units
- - - - Power to Lock No Various Options - 65mm 30mm 30mm 24 V dc - -
RS Stock No. 739-0574
Mfr. Part No.XCSLF2725312
HK$1,470.00
Each
units
Preventa XCS-LF - - Power to Unlock Yes Key M20 205mm 51mm 43.5mm 24 V ac/dc - -
RS Stock No. 862-1677
Mfr. Part No.D4SL-N4NFA-DN
BrandOmron
HK$1,482.80
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
HK$4,609.70
Each
units
- AZM 300 - - Power to Lock No Various Options 1/2 NPT 85mm 100mm 35mm 24 V dc - 1 PNP
RS Stock No. 826-3993
Mfr. Part No.201001
BrandIDEM
HK$1,273.56
Each
units
SEZYLOCK KLP - - Power to Unlock No Various Options M20 160mm 46mm 45.5mm 24 V ac/dc - 2NO
RS Stock No. 880-1895
Mfr. Part No.MZM 100 ST2-SD2PRE-A
BrandSchmersal
HK$4,681.30
Each
units
- MZM 100 - - Power to Lock No Straight M12 40mm 179mm 40mm 24 V dc - -
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