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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

    2743 Products showing for Safety Interlock Switches & Components

    1 of 138
    Pilz PSENhinge Safety Hinge Switch, 2NC
    • RS Stock No. 744-8692
    • Mfr. Part No. 570271
    Each
    £154.51
    Schmersal Actuator
    • RS Stock No. 742-0754
    • Mfr. Part No. AZ 3350-B6
    Each
    £51.68
    SICK Non-Contact Safety Switch
    • RS Stock No. 797-4888
    • Mfr. Part No. RE21-SK
    Each
    £8.14
    Pilz Transponder Non-Contact Safety Switch, 24V dc, Plastic Housing, M12
    • RS Stock No. 918-6655
    • Mfr. Part No. 541009
    Each
    £100.64
    SICK Non-Contact Safety Switch
    • RS Stock No. 797-4885
    • Mfr. Part No. RE13-SK
    Each
    £8.89
    Allen Bradley Guardmaster 440K Safety Interlock Switch, 2NC/1NO, Keyed Actuator Included, Glass Filled PBT
    • RS Stock No. 792-3082
    • Mfr. Part No. 440K-T11467
    Each
    £52.83
    RS PRO Safety Interlock Switch, 2NC, Plastic
    • RS Stock No. 179-7564
    Each
    £28.91
    Schmersal Actuator
    • RS Stock No. 880-1909
    • Mfr. Part No. MZM 100-B1.1
    Each
    £142.48
    Schmersal Standard Actuator for Use with AZM 161 Safety Switch
    • RS Stock No. 362-2732
    • Mfr. Part No. AZM 161-B1
    Each
    £11.73
    Schmersal Standard Actuator for Use with AZ 17 Safety Switch
    • RS Stock No. 623-2887
    • Mfr. Part No. AZ 17/170-B1
    Each
    £9.38
    Pilz PSEN sg2c Series Solenoid Interlock Switch, 24V dc, Actuator Included
    • RS Stock No. 824-4920
    • Mfr. Part No. 570800
    Each
    £691.99
    SICK RE21 Safety Interlock Switch, 1NC/1NO, Magnet, Vistal
    • RS Stock No. 285-8971
    • Mfr. Part No. RE21-SA03
    Each
    £40.11
    Allen Bradley Guardmaster 440K Safety Interlock Switch, 2NC, Keyed Actuator Included, Glass Filled PBT
    • RS Stock No. 489-4887
    • Mfr. Part No. 440K-E33041
    Each
    £34.05
    Pilz Magnetic Non-Contact Safety Switch, 24V dc, Plastic Housing, 2NO, M8
    • RS Stock No. 824-4927
    • Mfr. Part No. 506411
    Each
    £64.20
    Pilz Magnetic Non-Contact Safety Switch, 24V dc, Plastic Housing, NO/NC, M8
    • RS Stock No. 824-4918
    • Mfr. Part No. 506406
    Each
    £57.63
    Pilz Safety Interlock Switch, 2NC, Keyed Actuator Included, Glass Fibre Reinforced Thermoplastic
    • RS Stock No. 744-8660
    • Mfr. Part No. 570220
    Each
    £34.39
    Schmersal Actuator for Use with AZ Safety Switch
    • RS Stock No. 211-1578
    • Mfr. Part No. AZ 15/16-B3
    Each
    £11.72
    Pilz PSENmag Series Magnetic Non-Contact Safety Switch, 24V dc, Plastic Housing, 2NO, M8
    • RS Stock No. 619-2846
    • Mfr. Part No. 505223
    Each
    £97.49
    Omron D4NS Series Safety Interlock Switch, 2NC/1NO
    • RS Stock No. 836-2766
    • Mfr. Part No. D4NS1FF
    Each
    £31.79
    Schmersal Actuator, Plastic Housing
    • RS Stock No. 198-7863
    • Mfr. Part No. BPS 33
    Each
    £11.50
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