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 Rated stroke Supply Voltage Actuator Type Interface Safety Contacts Conduit Entry Length Housing Material
New
RS Stock No. 214-6731
Mfr. Part No.D4NL-1CFA-B
BrandOmron
kr 1 997,14
Each
Units
- D4NL - 2NC + 1NC/1NO Power to Unlock - - 24 V dc - - - - - -
RS Stock No. 357-9313
Mfr. Part No.440G-T27132
kr 2 772,21
Each
Units
TLS-2-GD2 440G-T - - Power to Lock - - 110 V ac - - 2NC M20 126mm Plastic
RS Stock No. 820-3771
Mfr. Part No.D4SLN4NDAD
BrandOmron
kr 1 680,00
Each
Units
- D4SL-N - - Power to Unlock No - 24 V dc Various Options - 2NC/1NO M20 39mm Metal
RS Stock No. 814-7040
Mfr. Part No.XCSTE7333
kr 2 418,53
Each
Units
Preventa XCS-TE - - Power to Unlock Yes - 120 V ac Key - 2NC 1/2 NPT 3.67in Plastic
RS Stock No. 151-2550
Mfr. Part No.440G-LZS21STLH
kr 2 946,15
Each
Units
- 440G-LZ - - Power to Lock Yes - 24 V dc Standard - 2 PNP (0.2A max) M12 45mm ABS
RS Stock No. 739-0656
Mfr. Part No.XCSLE3535312
kr 1 954,12
Each
Units
Preventa XCS-LE - - Power to Unlock Yes - 24 V ac/dc Key - 1NC/2NO 1/2 NPT 205mm Plastic
RS Stock No. 356-6171
Mfr. Part No.440G-L07264
kr 5 740,10
Each
Units
Atlas 5 440G-L - - Power to Unlock Yes - 24 V ac/dc Standard - 2NC M20 90mm Metal
RS Stock No. 880-1905
Mfr. Part No.MZM 100 B ST2-SD2PRE-A
BrandSchmersal
kr 6 889,11
Each
Units
- MZM 100 B - - Power to Lock No - 24 V dc Straight - 2 PNP M12 40mm Plastic
RS Stock No. 151-2438
Mfr. Part No.442G-MABL-ULM-C02
kr 9 621,88
Each
Units
- 442G - - Power to Lock Yes - 5 → 24 V dc Unique RFID Coded Bolt - - M23 285.3mm Glass Fibre Reinforced Plastic
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 - 24 V dc Straight - 2 PNP M12 40mm Plastic
RS Stock No. 890-2989
Mfr. Part No.440G-TZS21UPRH
kr 3 761,50
Each
Units
- 440G-TZ - - Power to Unlock Yes - 24 V dc Straight Guardlink 2 PNP - 92mm Plastic
RS Stock No. 746-7277
Mfr. Part No.D4NL-4AFA-B
BrandOmron
kr 2 085,00
Each
Units
- D4NL - - Power to Unlock - - 24 V dc Various Options - 1NC/1NO 1/2 NPT 88.5mm Plastic
RS Stock No. 749-7690
Mfr. Part No.3SE5312-0SD13
BrandSiemens
kr 3 718,02
Each
Units
Sirius 3SE5 - - Power to Unlock No - 230 V ac Various Options - 2NC M20 184.1mm Metal
RS Stock No. 252-3814
Mfr. Part No.XCSE5341
kr 3 958,09
Each
Units
Preventa XCS-E - - Power to Unlock Yes - 230 V ac Key - 2NO/1NC PG13.5 98mm Metal
RS Stock No. 151-2555
Mfr. Part No.440G-LZS21UTLA
kr 2 821,08
Each
Units
- 440G-LZ - - Power to Lock Yes - 24 V dc Unique RFID Coded Bolt - - - 45mm ABS
RS Stock No. 133-0067
Mfr. Part No.XCSLF3737412
kr 3 678,93
Each
Units
Preventa XCSLF DP 2NC (Main), 2NC (Safety) Power to Lock Yes - 24 V ac/dc Key - 2NC M20 x 1.5 44mm Polyamide
RS Stock No. 862-1712
Mfr. Part No.D4SL-N4EFG-D
BrandOmron
kr 1 585,00
Each
Units
- D4SL-N - - Power to Lock No - 24 V dc Various Options - 2NC/1NO M20 39mm Metal
RS Stock No. 880-1779
Mfr. Part No.AZM 200ST2-T-1P2P
BrandSchmersal
kr 4 796,23
Each
Units
- AZM 200 - - Power to Unlock No - 24 V dc Various Options - 2 PNP M12 40mm Plastic
RS Stock No. 151-2430
Mfr. Part No.442G-MABL-URM-C02
kr 9 621,88
Each
Units
- 442G - - Power to Lock Yes - 5 → 24 V dc Unique RFID Coded Bolt - - M23 285.3mm Glass Fibre Reinforced Plastic
RS Stock No. 880-1851
Mfr. Part No.EX-AZM 161SK-12/12RKA-024-3D
BrandSchmersal
kr 2 891,15
Each
Units
- EX-AZM 161 - - Power to Lock No - 24 V ac/dc Various Options - 2NC/2NO M16 130mm Plastic