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 Interface Conduit Entry Length Width Depth Supply Voltage Maximum AC Voltage
RS Stock No. 862-1692
Mfr. Part No.D4SL-N4RFA-D
BrandOmron
kr 1 481,00
Each
Units
- D4SL-N - - Power to Unlock No Various Options - M20 39mm 179.5mm 39mm 24 V dc -
RS Stock No. 357-9212
Mfr. Part No.440G-T27134
kr 2 352,74
Each
Units
TLS-3-GD2 440G-T - - Power to Unlock - - - M20 126mm 86mm 33mm 24 V ac/dc -
RS Stock No. 820-3783
Mfr. Part No.D4SLN4PDAD
BrandOmron
kr 1 570,00
Each
Units
- D4SL-N - - Power to Unlock No Various Options - M20 39mm 39mm 179.9mm 24 V dc -
RS Stock No. 357-9290
Mfr. Part No.440G-T27123
kr 2 352,74
Each
Units
TLS-1-GD2 440G-T - - Power to Unlock - - - M20 126mm 86mm 33mm 230 V ac -
RS Stock No. 826-3981
Mfr. Part No.450201
BrandIDEM
kr 2 951,75
Each
Units
RAMZLOCK KLTM-RFID - - Power to Unlock Yes Coded RFID - M20 155mm 105mm 46.5mm 24 V dc -
RS Stock No. 151-2435
Mfr. Part No.442G-MABR-ULM-C01
kr 8 566,56
Each
Units
Guard Master 442G - - Power to Unlock Yes Unique RFID Coded Bolt - M23 285.3mm 114mm 174mm 5 24 V dc -
RS Stock No. 617-5093
Mfr. Part No.AZM190-02/01RK-24VDC
BrandSchmersal
kr 2 166,50
Each
Units
- AZM 190 - - Power to Unlock No Various Options - M20 41mm 29.5mm 178mm 24 V dc -
RS Stock No. 792-3105
Mfr. Part No.440G-T27252
kr 2 272,98
Each
Units
TLS-1-GD2 440G-T - - Power to Unlock Yes Fully Flexible - M20 126mm 86mm 43mm 24 V ac/dc -
RS Stock No. 820-3787
Mfr. Part No.D4SLN4PDGD
BrandOmron
kr 1 570,00
Each
Units
- D4SL-N - - Power to Lock No Various Options - M20 39mm 39mm 179.9mm 24 V dc -
RS Stock No. 880-1892
Mfr. Part No.MZM 100 ST2-1P2PWRE-A
BrandSchmersal
kr 6 889,11
Each
Units
- MZM 100 - - Power to Lock No Straight - M12 40mm 179mm 40mm 24 V dc -
RS Stock No. 810-4087
Mfr. Part No.440G-LZS21UPLB
kr 3 050,58
Each
Units
- 440G-LZ - - Power to Lock Yes Unique - 10 m Cable 140mm 45mm 50mm 24 V dc -
RS Stock No. 609-6726
Mfr. Part No.XCSE5331
kr 3 958,09
Each
Units
Preventa XCS-E - - Power to Unlock Yes Key - M20 98mm 44mm 146mm 110/120 V ac -
RS Stock No. 763-6984
Mfr. Part No.3SE5322-1SE21
BrandSiemens
kr 3 160,49
Each
Units
Sirius 3SE5 - - Power to Lock - Various Options - M20 54mm 43.8mm 184.1mm 24 V dc -
RS Stock No. 151-2462
Mfr. Part No.442G-MABRB-UL-E0P49
kr 18 403,20
Each
Units
Guard Master 442G - - Power to Unlock Yes Unique RFID Coded Bolt - M12 x 2 285.3mm 114mm 174mm 5 24 V dc -
RS Stock No. 880-1716
Mfr. Part No.AZM300Z-I2-ST-1P2P
BrandSchmersal
kr 5 090,83
Each
Units
- AZM 300 - - Power to Unlock No Various Options - M12 85mm 100mm 35mm 24 V dc -
RS Stock No. 151-2430
Mfr. Part No.442G-MABL-URM-C02
kr 8 864,64
Each
Units
Guard Master 442G - - Power to Lock Yes Unique RFID Coded Bolt - M23 285.3mm 114mm 113.9mm 5 24 V dc -
RS Stock No. 178-3150
Mfr. Part No.8 10 BM 28
BrandMecalectro
kr 1 748,31
Each
Units
- - - - Power to Unlock No Various Options - - 60mm 30mm 30mm 24 V dc -
RS Stock No. 151-2556
Mfr. Part No.440G-LZS21UTLB
kr 2 851,20
Each
Units
Guard Master 440G-LZ - - Power to Lock Yes Unique RFID Coded Bolt - - 45mm 162.9mm 50mm 24 V dc -
RS Stock No. 890-2985
Mfr. Part No.440G-TZS21UPLH
kr 3 299,82
Each
Units
- 440G-TZ - - Power to Lock Yes Straight Guardlink - 92mm 39mm 126mm 24 V dc -
RS Stock No. 749-7690
Mfr. Part No.3SE5312-0SD13
BrandSiemens
kr 3 320,01
Each
Units
Sirius 3SE5 - - Power to Unlock No Various Options - M20 184.1mm 54mm 55.7mm 230 V ac -
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