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. 179-7564
BrandRS PRO
SGD36.33
Each
units
- - - 2NC - - - 90° Key PG 13.5 31mm 31mm 95mm 600 V ac 600V
RS Stock No. 617-5065
Mfr. Part No.AZM 161SK-12/12RK-024
BrandSchmersal
SGD407.00
Each
units
- AZM 161 - - - Power to Unlock No Various Options M16 90mm 30mm 130mm 24 V ac/dc -
RS Stock No. 862-1712
Mfr. Part No.D4SL-N4EFG-D
BrandOmron
SGD266.72
Each
units
- D4SL-N - - - Power to Lock No Various Options M20 39mm 179.5mm 39mm 24 V dc -
RS Stock No. 741-8685
Mfr. Part No.AZM 170-02ZRKA 24 VAC/DC
BrandSchmersal
SGD313.97
Each
units
- AZM 170 - - - Power to Lock No Various Options 1/2 NPT 30mm 90mm 84mm 24 V ac/dc -
RS Stock No. 178-3144
Mfr. Part No.8 10 BJ 28
BrandMecalectro
SGD280.93
Each
units
- - - - - Power to Lock No Various Options - 65mm 30mm 30mm 24 V dc -
RS Stock No. 617-5087
Mfr. Part No.AZM 161SK-12/12RKA-024
BrandSchmersal
SGD343.74
Each
units
- AZM 161 - - - Power to Lock No Various Options M16 90mm 30mm 130mm 24 V ac/dc -
RS Stock No. 617-5122
Mfr. Part No.AZM415-11/11 ZPKE 24VAC/DC-M20
BrandSchmersal
SGD694.27
Each
units
- AZM 415 - - - Power to Unlock No Various Options 1/2 NPT 100mm 46.5mm 130mm 24 V ac/dc -
RS Stock No. 744-8651
Mfr. Part No.570000
BrandPilz
SGD279.10
Each
units
PSENmech PSENme - - - Power to Unlock Yes Standard M20 184mm 42.5mm 51mm 24 V ac/dc -
RS Stock No. 742-0726
Mfr. Part No.AZM 170SK-11/02ZRK-2197 24VAC/DC
BrandSchmersal
SGD447.96
Each
units
- AZM 170 - - - Power to Unlock No Various Options 1/2 NPT 30mm 108mm 100.5mm 24 V ac/dc -
RS Stock No. 862-1715
Mfr. Part No.D4SL-N4AFG
BrandOmron
SGD258.91
Each
units
- D4SL-N - - - Power to Lock No Various Options M20 39mm 179.5mm 39mm 24 V dc -
RS Stock No. 880-1707
Mfr. Part No.AZM300Z-ST-1P2P-A
BrandSchmersal
SGD797.45
Each
units
- AZM 300 - - - Power to Lock No Various Options 1/2 NPT 85mm 100mm 35mm 24 V dc -
RS Stock No. 880-1779
Mfr. Part No.AZM 200ST2-T-1P2P
BrandSchmersal
SGD738.63
Each
units
- AZM 200 - - - Power to Unlock No Various Options M12 40mm 220mm 50mm 24 V dc -
RS Stock No. 746-7283
Mfr. Part No.D4NL-4EFA-B
BrandOmron
SGD313.42
Each
units
- D4NL - - - Power to Unlock - Various Options M20 88.5mm 95mm 35.5mm 24 V dc -
RS Stock No. 617-5100
Mfr. Part No.AZM 161SK-12/12RKA-110/230
BrandSchmersal
SGD337.78
Each
units
- AZM 161 - - - Power to Lock No Various Options M16 90mm 30mm 130mm 110 V ac, 230 V ac -
RS Stock No. 263-3725
Mfr. Part No.XCSE5312
SGD681.16
Each
units
Preventa XCS-E - - - Power to Unlock Yes Key M20 98mm 44mm 146mm 24 V ac/dc -
RS Stock No. 178-3150
Mfr. Part No.8 10 BM 28
BrandMecalectro
SGD329.97
Each
units
- - - - - Power to Unlock No Various Options - 60mm 30mm 30mm 24 V dc -
RS Stock No. 746-7223
Mfr. Part No.D4JL-4NFA-C5
BrandOmron
SGD396.20
Each
units
- D4JL - - - Power to Unlock - - 1/2 NPT 114mm 132.9mm 36.5mm 24 V dc -
RS Stock No. 824-4920
Mfr. Part No.570800
BrandPilz
SGD1,086.31
Each
units
PSENsgate PSEN sg2c - - - - Yes Handle M12 465mm 200mm 108mm 24 V dc -
RS Stock No. 763-6984
Mfr. Part No.3SE5322-1SE21
BrandSiemens
SGD521.18
Each
units
Sirius 3SE5 - - - Power to Lock - Various Options M20 54mm 43.8mm 184.1mm 24 V dc -
RS Stock No. 880-1842
Mfr. Part No.EX-AZM 161SK-12/12RK-024-3D
BrandSchmersal
SGD543.18
Each
units
- EX-AZM 161 - - - Power to Unlock No Various Options M16 130mm 114mm 30mm 24 V ac/dc -
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