Safety Interlock Switches & Components

An industrial switch is a device used to interrupt or redirect the flow of electricity within a circuit. The electronic switch is a simple binary device as it can only be 'open' or 'closed'. Open allows electrons to flow and closed stops the flow. Industrial switches operate in the same manner as household switches but are offered in different styles to suite the industrial applications.

Industrial switch types

We stock a wide range of industrial switches, below we have covered the most popular types:

  • Limit switches - used when a presence or position of an object is required. They're usually electromagnetically operated, activating when an object makes physical contact with the actuator.
  • Reed switches - composed of two ferrous reeds in a small glass casing. The switches are magnetised and move when the magnetic field is moved towards the switch. You can see this if you place a tablet inside a protective case, it switches off as the magnet activates the reed switch.
  • Rotary switches - an alternative to a toggle or side switches, rotary switches allow the user to turn a knob or shaft that increases or decreases the resistance conducted through the contacts dependant on the direction of turn. Rotary switches allow different actuation positions, turning different circuits on/off or increasing/decreasing the value of the circuit. Some rotary switches can be configured to control multiple contacts simultaneously at a single switch position.
  • Thermistors - turn circuits on and off dependent on changes in temperature. NTC (Negative Temperature Coefficient) thermistors resistance changes as the temperature drops and are commonly used as a temperature sensor. PTC (Positive Temperature Coefficient) thermistors resistance increases as temperature rises, commonly used to provide over current protection.
  • Thermostats - used to regulate temperatures of liquid or gas. There are two main types of thermostats, capillary and bimetallic.
  • Isolator & switch disconnectors - used to ensure that a circuit is completely powered down in order for it to be serviced. They isolate a given part of the circuit by cutting off its electrical supply, making it safe to work on.
  • Non-fused switch disconnectors - provide the same functionality as switch disconnectors but instead of using a fuse to break the circuit, they use either a rotary or knife-blade disconnect.
Hinge Switches
Hinge Switches
Non Contact Safety Switches
Non Contact Safety Switches
Safety Interlock Actuators & Magnets
Safety Interlock Actuators & Magnets
Safety Interlock Adapters & Mounts
Safety Interlock Adapters & Mounts
Safety Interlock Components
Safety Interlock Components
Safety Interlock Switches
Safety Interlock Switches
Solenoid Interlock Switches
Solenoid Interlock Switches

2800 Products showing for Safety Interlock Switches & Components

1 of 140
Limited stock
Telemecanique Sensors XCSPA Interlock Safety Interlock Switch, Keyed, Polyamide, Key
  • RS Stock No. 132-9174
  • Mfr. Part No. XCSPA492
Subtotal (1 unit)
HK$672.30
Temporarily out of stock
Schmersal AZM 161 Series Solenoid Interlock Switch, Power to Lock
  • RS Stock No. 617-5100
  • Mfr. Part No. AZM 161SK-12/12RKA-110/230
Subtotal (1 unit)
HK$2,740.60
In Stock
Pilz PSEN Series Magnetic Non-Contact Safety Switch, Plastic Housing, 24V dc, NC, NO, M8
  • RS Stock No. 824-4918
  • Mfr. Part No. 506406
Subtotal (1 unit)
HK$889.80
Stocked by manufacturer
Bernstein AG MA-42 Series Magnetic Non-Contact Safety Switch, Polyamide 6 Housing, 170V dc, 1 NO/1 NC, M8
  • RS Stock No. 210-1938
  • Mfr. Part No. 6490642321
Subtotal (1 unit)
HK$457.48
In Stock
Omron D4NS Series Solenoid Interlock Switch Power to Lock/Unlock
  • RS Stock No. 549-552
  • Mfr. Part No. D4NS-4DF
Subtotal (1 unit)
HK$548.60
In Stock
Omron D4NL Series Solenoid Interlock Switch, Power to Unlock
  • RS Stock No. 214-7549
  • Mfr. Part No. D4NL-4FFA-B
Subtotal (1 unit)
HK$2,408.40
In Stock
ABB MKey5 Safety Interlock Switch, Plastic
  • RS Stock No. 232-0002
  • Mfr. Part No. 2TLA050003R0100 MKEY5
Subtotal (1 unit)
HK$715.20
In Stock
Omron D40A Series Magnetic Non-Contact Safety Switch, Polybutylene Terephthalate Housing, 125V dc, 1 NO, Cable
  • RS Stock No. 746-7191
  • Mfr. Part No. D40A-1C5
Subtotal (1 unit)
HK$1,516.20
Limited stock
Telemecanique Sensors XCS-DMP Series Magnetic Non-Contact Safety Switch, Plastic Housing, 100V dc, 1 NO/2 NC, M12
  • RS Stock No. 766-1661
  • Mfr. Part No. XCSDMP701L01M12
Subtotal (1 unit)
HK$1,190.20
In Stock
Telemecanique Sensors XCS TE Series Solenoid Interlock Switch, Power to Unlock Actuator Included
  • RS Stock No. 198-655
  • Mfr. Part No. XCSTE7341
Subtotal (1 unit)
HK$2,915.30
Stocked by manufacturer
Schmersal Safety Switch with Separate Actuator
  • RS Stock No. 335-638
  • Mfr. Part No. AZ 17-02ZI-ST B5
Subtotal (1 unit)
HK$1,005.04
In Stock
Siemens 3SE5 Safety Interlock Switch, Keyed Actuator Included, Metal, Key
  • RS Stock No. 498-915
  • Mfr. Part No. 3SE5112-1QV10
Subtotal (1 unit)
HK$2,607.70
In Stock
Omron D4NH Hinge Switch 2 NC
  • RS Stock No. 215-5047
  • Mfr. Part No. D4NH-1BAS
Subtotal (1 unit)
HK$687.20
In Stock
IDEM SPR Series Magnetic Non-Contact Safety Switch, Plastic Housing, 24V dc, 2 NC, M12
  • RS Stock No. 826-4280
  • Mfr. Part No. 111014
Subtotal (1 unit)
HK$765.90
In Stock
Siemens 3SE5 Series Solenoid Interlock Switch, Power to Unlock Actuator Included
  • RS Stock No. 498-983
  • Mfr. Part No. 3SE5322-1SD21
Subtotal (1 unit)
HK$5,481.60
In Stock
Schmersal RST Series Magnetic Actuator, Plastic Housing, Screw
  • RS Stock No. 880-1845
  • Mfr. Part No. RST-16-1
Subtotal (1 unit)
HK$206.00
In Stock
Bernstein AG Actuator for Use with SLM Safety Switches, SLK Safety Switches, ENM2-VTW Safety Switches, ENK-VTU Safety
  • RS Stock No. 177-9029
  • Mfr. Part No. 3911702230
Subtotal (1 unit)
HK$723.20
In Stock
IDEM KL1-P Series Solenoid Interlock Switch, Power to Unlock
  • RS Stock No. 826-3965
  • Mfr. Part No. 221307
Subtotal (1 unit)
HK$1,280.30
In Stock
SMC Bracket for use with Pressure Vacuum Switches
  • RS Stock No. 847-7048
  • Mfr. Part No. ZS-38-A1
Subtotal (1 unit)
HK$50.30
In Stock
SICK RE11 Series Magnetic Non-Contact Safety Switch, Plastic Housing, 30V dc, NC, 5 m Cable
  • RS Stock No. 797-4850
  • Mfr. Part No. RE11-SA05
Subtotal (1 unit)
HK$484.60
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