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. 746-7289
Mfr. Part No.D4NL-4CFA-B4
BrandOmron
MYR1,038.68
Each
units
- D4NL - - Power to Unlock - Various Options M20 88.5mm 95mm 35.5mm 24 V dc - NC/NO
RS Stock No. 814-7031
Mfr. Part No.XCSTE7313
MYR1,208.17
Each
units
Preventa XCS-TE - - Power to Unlock Yes Key 1/2 NPT 94mm 110mm 33mm 24 V ac/dc - 1NC
RS Stock No. 763-6996
Mfr. Part No.3SE5322-1SG21
BrandSiemens
MYR1,556.61
Each
units
Sirius 3SE5 - - Power to Lock - Various Options M20 54mm 43.8mm 184.1mm 24 V dc - 1NO
RS Stock No. 263-3769
Mfr. Part No.XCSE7332
MYR1,795.30
Each
units
Preventa XCS-E - - Power to Unlock Yes Key PG13.5 98mm 44mm 146mm 110/120 V ac - -
RS Stock No. 826-4000
Mfr. Part No.205001
BrandIDEM
MYR1,496.16
Each
units
HYGIELOCK KL3-SS - - Power to Unlock No Various Options M20 177mm 48mm 47mm 24 V ac/dc - 1NO
RS Stock No. 880-1719
Mfr. Part No.AZM300Z-I2-ST-1P2PA
BrandSchmersal
MYR2,899.38
Each
units
- AZM 300 - - Power to Lock No Various Options 1/2 NPT 85mm 100mm 35mm 24 V dc - 1 PNP
RS Stock No. 123-7513
Mfr. Part No.205021
BrandIDEM
MYR1,600.49
Each
units
HYGIELOCK KL3-SS-P2L - - Power to Lock No Various Options M20 48mm 177mm 47mm 24 V dc - NC/NO
RS Stock No. 880-1886
Mfr. Part No.MZM 100 ST2-SD2PREM-A
BrandSchmersal
MYR3,809.84
Each
units
- MZM 100 - - Power to Lock No Straight M12 40mm 179mm 40mm 24 V dc - -
RS Stock No. 198-728
Mfr. Part No.XCSTE5511
MYR1,234.64
Each
units
Preventa XCS TE - - Power to Lock - - PG11 94mm 110mm 33mm 24 V ac/dc - NC
RS Stock No. 763-7053
Mfr. Part No.3SE5312-0SE11
BrandSiemens
MYR1,548.32
Each
units
Sirius 3SE5 - - Power to Lock - Various Options M20 54mm 43.8mm 184.1mm 24 V dc - 1NO
RS Stock No. 746-7201
Mfr. Part No.D4BL-2CRA
BrandOmron
MYR1,936.68
Each
units
- D4BL - - Power to Unlock - Various Options 1/2 NPT 116.5mm 123.5mm 46.3mm 24 V dc - 1NC
RS Stock No. 136-3177
Mfr. Part No.6018169054
MYR1,069.05
Each
units
- SLK 4P - Power to Unlock No Various Options M20 42.5mm 51mm 184mm 24 V ac/dc 24V 2NC
RS Stock No. 133-0067
Mfr. Part No.XCSLF3737412
MYR1,587.70
Each
units
Preventa XCSLF DP 2NC (Main), 2NC (Safety) Power to Lock Yes Key M20 x 1.5 44mm 51mm 205mm 24 V ac/dc 240V -
RS Stock No. 263-3797
Mfr. Part No.XCSE7512
MYR2,217.57
Each
units
Preventa XCS-E - - Power to Lock Yes Key PG13.5 98mm 44mm 146mm 24 V ac/dc - -