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 Power to Lock / Unlock Series Pole Configuration Supply Voltage Normal State Configuration Actuator Included Rated stroke Actuator Type Interface Safety Contacts Conduit Entry Auxiliary Contacts Length
RS Stock No. 537-7119
Mfr. Part No.440G-MT47016
kr 2 446,07
Each
Units
- Power to Unlock 440G-MT - 230 V ac/dc - - - - - 3NC M20 NO 40mm
RS Stock No. 151-2547
Mfr. Part No.440G-LZS21STLA
kr 2 531,42
Each
Units
- Power to Lock 440G-LZ - 24 V dc - Yes - Standard - - - - 45mm
RS Stock No. 742-0717
Mfr. Part No.AZM 170SK-11/11ZRK-2197 24 VAC/DC
BrandSchmersal
kr 2 200,19
Each
Units
- Power to Unlock AZM 170 - 24 V ac/dc - No - Various Options - 2NC 1/2 NPT 2NO 30mm
RS Stock No. 151-2557
Mfr. Part No.440G-LZS21UTLH
kr 2 821,08
Each
Units
- Power to Lock 440G-LZ - 24 V dc - Yes - Unique RFID Coded Bolt - - M12 - 45mm
RS Stock No. 498-987
Mfr. Part No.3SE5312-1SD11
BrandSiemens
kr 3 957,19
Each
Units
Sirius Power to Unlock 3SE5 - 24 V dc - - - Various Options - 2NC M20 1NO 54mm
RS Stock No. 263-3797
Mfr. Part No.XCSE7512
kr 4 267,16
Each
Units
Preventa Power to Lock XCS-E - 24 V ac/dc - Yes - Key - 1NO/1NC PG13.5 - 98mm
RS Stock No. 609-6732
Mfr. Part No.XCSE7511
kr 4 167,46
Each
Units
Preventa Power to Lock XCS-B - 24 V ac/dc - Yes - Key - 1NO/2NC PG13.5 - 98mm
RS Stock No. 873-2184
Mfr. Part No.440G-T27241
kr 4 337,69
Each
Units
TLS-2-GD2 Power to Lock 440G-T - 24 V ac/dc - Yes - Straight - 2NC M23 1NO 126mm
RS Stock No. 357-9228
Mfr. Part No.440G-T27138
kr 2 772,21
Each
Units
TLS-3-GD2 Power to Unlock 440G-T - 110 V ac - No - Various Options - 2NC M20 1NO 126mm
RS Stock No. 814-7078
Mfr. Part No.XCSL764F3
kr 4 805,54
Each
Units
- Power to Unlock XCS-L - 110 V ac - Yes - Key - 1NO/2NC 1/2 NPT - 7.64in
RS Stock No. 810-4059
Mfr. Part No.440G-LZS21SPRB
kr 2 781,41
Each
Units
- Power to Unlock 440G-LZ - 24 V dc - Yes - Standard - 2 PNP 10 m Cable 1 PNP 140mm
RS Stock No. 814-7040
Mfr. Part No.XCSTE7333
kr 2 418,53
Each
Units
Preventa Power to Unlock XCS-TE - 120 V ac - Yes - Key - 2NC 1/2 NPT 1NC 3.67in
RS Stock No. 136-3178
Mfr. Part No.6018169055
kr 2 140,41
Each
Units
- Power to Unlock SLK 4P 110 V ac, 230 V ac - No - Various Options - 2NC M20 2NC 42.5mm
RS Stock No. 746-7223
Mfr. Part No.D4JL-4NFA-C5
BrandOmron
kr 2 489,90
Each
Units
- Power to Unlock D4JL - 24 V dc - - - - - 2NC/1NO 1/2 NPT 2NC/1NO 114mm
RS Stock No. 880-1892
Mfr. Part No.MZM 100 ST2-1P2PWRE-A
BrandSchmersal
kr 6 889,11
Each
Units
- Power to Lock MZM 100 - 24 V dc - No - Straight - 2 PNP M12 1 PNP 40mm
RS Stock No. 880-1703
Mfr. Part No.AZM300Z-ST-1P2P
BrandSchmersal
kr 4 660,38
Each
Units
- Power to Unlock AZM 300 - 24 V dc - No - Various Options - 2 PNP 1/2 NPT 1 PNP 85mm
RS Stock No. 263-3769
Mfr. Part No.XCSE7332
kr 4 057,79
Each
Units
Preventa Power to Unlock XCS-E - 110/120 V ac - Yes - Key - 1NO/2NC PG13.5 - 98mm
RS Stock No. 820-3793
Mfr. Part No.D4SLN4RDAD
BrandOmron
kr 1 680,00
Each
Units
- Power to Unlock D4SL-N - 24 V dc - No - Various Options - 3NC M20 3NC 39mm
RS Stock No. 206-5771
Mfr. Part No.103016780
kr 5 582,13
Each
Units
AZM201 Power to Lock AZM201Z-I2-SK-T-1P2PW-A 1P-Diagnostic, 2P-Safety 26.4 V dc - - 7.5 +0.5/-2.5mm - - - - - -
RS Stock No. 123-7512
Mfr. Part No.202021-SS
BrandIDEM
kr 2 452,59
Each
Units
SAMLOCK Power to Lock KLM-P2L - 24 V dc - No - Various Options - 2NC M20 NC/NO 46mm