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

3232 Products showing for Safety Interlock Switches & Components

1 of 162
In Stock
Allen Bradley NO 440K Safety Rated Interlock Switch, Keyed Actuator Included, Fibreglass Reinforced Polybutylene
  • RS Stock No. 178-181
  • Mfr. Part No. 440K-T11090
Subtotal (1 unit)
£47.02(exc. VAT)
In Stock
Allen Bradley Guardmaster 440K Safety Rated Interlock Switch, Keyed Actuator Included, Fibreglass Reinforced
  • RS Stock No. 483-3567
  • Mfr. Part No. 440K-E33040
Subtotal (1 unit)
£34.39(exc. VAT)
In Stock
Allen Bradley Guardmaster 440K Safety Interlock Switch, Keyed Actuator Included, Fibreglass Reinforced Polybutylene
  • RS Stock No. 792-3082
  • Mfr. Part No. 440K-T11467
Subtotal (1 unit)
£53.36(exc. VAT)
In Stock
Bernstein AG SLK Series Solenoid Interlock Switch, Power to Unlock
  • RS Stock No. 136-3174
  • Mfr. Part No. 6018119045
Subtotal (1 unit)
£225.70(exc. VAT)
In Stock
Pilz PSENme Series Solenoid Interlock Switch, Power to Unlock Actuator Included
  • RS Stock No. 744-8651
  • Mfr. Part No. 570000
Subtotal (1 unit)
£147.86(exc. VAT)
In Stock
Allen Bradley Guardmaster 440N Series Magnetic Non-Contact Safety Switch, Plastic Housing, 24V dc, 2 NC, 3 m Cable
  • RS Stock No. 703-4858
  • Mfr. Part No. 440N-Z2NRS1A
Subtotal (1 unit)
£58.84(exc. VAT)
In Stock
Allen Bradley Guardmaster 440N Series Magnetic Non-Contact Safety Switch, Plastic Housing, 24V dc, 2 NC, 10 m Cable
  • RS Stock No. 703-4851
  • Mfr. Part No. 440N-Z2NRS1B
Subtotal (1 unit)
£78.47(exc. VAT)
In Stock
Pilz PSEN Series Magnetic Non-Contact Safety Switch, Plastic Housing, 24V dc, 2 NO, M8
  • RS Stock No. 619-2818
  • Mfr. Part No. 504220
Subtotal (1 unit)
£62.32(exc. VAT)
In Stock
SICK RE21 Safety Interlock Switch, Magnet Actuator Included, Vistal, Magnet
  • RS Stock No. 285-8971
  • Mfr. Part No. RE21-SA03
Subtotal (1 unit)
£41.75(exc. VAT)
In Stock
Allen Bradley 440G-T Series Solenoid Interlock Switch, Power to Unlock
  • RS Stock No. 351-3852
  • Mfr. Part No. 440G-T27121
Subtotal (1 unit)
£239.12(exc. VAT)
In Stock
Allen Bradley Guardmaster 440G-L Series Solenoid Interlock Switch, Power to Unlock Actuator Included
  • RS Stock No. 356-6171
  • Mfr. Part No. 440G-L07264
Subtotal (1 unit)
£535.90(exc. VAT)
In Stock
IDEM KLP-P2L Series Solenoid Interlock Switch, Power to Lock
  • RS Stock No. 123-7511
  • Mfr. Part No. 201021
Subtotal (1 unit)
£165.60(exc. VAT)
In Stock
RS PRO Safety Interlock Switch, Plastic
  • RS Stock No. 179-7564
Subtotal (1 unit)
£30.08(exc. VAT)
In Stock
Schmersal AZM 161 Series Solenoid Interlock Switch, Power to Unlock
  • RS Stock No. 617-5065
  • Mfr. Part No. AZM 161SK-12/12RK-024
Subtotal (1 unit)
£282.03(exc. VAT)
In Stock
Siemens 3SE2 Safety Hinge Switch
  • RS Stock No. 528-0740
  • Mfr. Part No. 3SE2283-0GA43
Subtotal (1 unit)
£182.73(exc. VAT)
In Stock
Allen Bradley Guardmaster 440N Series RFID Non-Contact Safety Switch, Stainless Steel Housing, 24V dc, 2 NC, M12
  • RS Stock No. 215-586
  • Mfr. Part No. 440N-Z21S17H
Subtotal (1 unit)
£194.87(exc. VAT)
In Stock
Allen Bradley Guardmaster 440N Series Magnetic Non-Contact Safety Switch, Plastic Housing, 300V dc, NC, NO, 3 m Cable
  • RS Stock No. 334-0777
  • Mfr. Part No. 440N-S32015
Subtotal (1 unit)
£64.98(exc. VAT)
In Stock
Allen Bradley Guardmaster 440G-T Series Solenoid Interlock Switch, Power to Unlock Actuator Included
  • RS Stock No. 792-3105
  • Mfr. Part No. 440G-T27252
Subtotal (1 unit)
£254.48(exc. VAT)
Limited stock
Telemecanique Sensors Actuator for Use with XCSA Safety Switch, XCSE Safety Switch, XCSB Safety Switch
  • RS Stock No. 252-3858
  • Mfr. Part No. XCSZ03
Subtotal (1 unit)
£31.01(exc. VAT)
In Stock
IDEM KL1-P Series Solenoid Interlock Switch, Power to Unlock
  • RS Stock No. 826-3953
  • Mfr. Part No. 221301
Subtotal (1 unit)
£132.83(exc. VAT)
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