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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

3385 Products showing for Safety Interlock Switches & Components

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1 of 170
In Stock
Allen Bradley Guardmaster 440N Series Magnetic Non-Contact Safety Switch, Plastic Housing, 300V dc, NC, NO, 3 m Cable
  • RS Stock No. 334-0761
  • Mfr. Part No. 440N-S32014
Subtotal (1 unit)
£67.81(exc. VAT)
£67.81/unit
In Stock
Allen Bradley Guardmaster Elf Safety Rated Interlock Switch, Keyed Actuator Included, Fibreglass Reinforced Polybutylene
  • RS Stock No. 489-4887
  • Mfr. Part No. 440K-E33041
Subtotal (1 unit)
£35.83(exc. VAT)
£35.83/unit
In Stock
Allen Bradley 440K Safety Rated Interlock Switch, Keyed Actuator Included, Fibreglass Reinforced Polybutylene
  • RS Stock No. 178-181
  • Mfr. Part No. 440K-T11090
Subtotal (1 unit)
£49.01(exc. VAT)
£49.01/unit
In Stock
Allen Bradley Guardmaster 440K Safety Interlock Switch, Keyed Actuator Included, Metal, Keyed
  • RS Stock No. 350-074
  • Mfr. Part No. 440K-B04025
Subtotal (1 unit)
£168.93(exc. VAT)
£168.93/unit
In Stock
Pilz PSEN Series Transponder Non-Contact Safety Switch, Polybutylene Terephthalate Housing, 24V dc, 2, M12
  • RS Stock No. 191-9809
  • Mfr. Part No. 541209
Subtotal (1 unit)
£146.88(exc. VAT)
£146.88/unit
In Stock
Pilz PSEN Series Magnetic Non-Contact Safety Switch, Plastic Housing, 24V dc, NC, NO, M8
  • RS Stock No. 824-4914
  • Mfr. Part No. 506405
Subtotal (1 unit)
£51.68(exc. VAT)
£51.68/unit
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)
£55.61(exc. VAT)
£55.61/unit
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)
£558.59(exc. VAT)
£558.59/unit
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)
£291.66(exc. VAT)
£291.66/unit
In Stock
Omron D40A-2 Series Non-Contact Non-Contact Safety Switch, PBT Housing, 24V, Cable
  • RS Stock No. 873-947
  • Mfr. Part No. D40A-2C2
Subtotal (1 unit)
£31.48(exc. VAT)
£31.48/unit
In Stock
Allen Bradley Non-Contact Safety Switch, Polyester Housing
  • RS Stock No. 334-0783
  • Mfr. Part No. 440N-S32016
Subtotal (1 unit)
£91.79(exc. VAT)
£91.79/unit
In Stock
Allen Bradley Guardmaster 440N Series Magnetic Non-Contact Safety Switch, Plastic Housing, 300V dc, NC, 3 m Cable
  • RS Stock No. 335-5763
  • Mfr. Part No. 440N-S32023
Subtotal (1 unit)
£88.42(exc. VAT)
£88.42/unit
In Stock
Allen Bradley Guardmaster 440K Safety Interlock Switch, Key Actuator Included, Fibreglass Reinforced Polybutylene
  • RS Stock No. 792-3089
  • Mfr. Part No. 440K-T11338
Subtotal (1 unit)
£66.55(exc. VAT)
£66.55/unit
Limited stock
Telemecanique Sensors XCS-DMP Series Magnetic Non-Contact Safety Switch, Plastic Housing, 100V dc, 1 NO/2 NC, Cable
  • RS Stock No. 422-5102
  • Mfr. Part No. XCSDMP7012
Subtotal (1 unit)
£103.00(exc. VAT)
£103.00/unit
In Stock
IDEM SMR Series Magnetic Non-Contact Safety Switch, 316 Stainless Steel Housing, 24V dc, 2 NC, 5 m Cable
  • RS Stock No. 826-4299
  • Mfr. Part No. 139014
Subtotal (1 unit)
£127.24(exc. VAT)
£127.24/unit
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)
£81.85(exc. VAT)
£81.85/unit
In Stock
IDEM SPF-RFID-M Series Non-Contact Safety Switch, Plastic Housing, 24V dc, 2 NC, 2 m Cable
  • RS Stock No. 826-4338
  • Mfr. Part No. 405101
Subtotal (1 unit)
£89.01(exc. VAT)
£89.01/unit
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)
£249.24(exc. VAT)
£249.24/unit
Temporarily out of stock
IDEM SMR Series Magnetic Non-Contact Safety Switch, 316 Stainless Steel Housing, 24V dc, 2 NC, 1 NO, 10 m Cable
  • RS Stock No. 826-4293
  • Mfr. Part No. 139015
Subtotal (1 unit)
£138.25(exc. VAT)
£138.25/unit
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)
£62.32/unit
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