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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

    2803 Products showing for Safety Interlock Switches & Components

    8 of 141
    Allen Bradley Guardmaster 440K Safety Interlock Switch, 3NC/1NO, Keyed Actuator Included, Glass Filled PBT
    • RS Stock No. 378-1623
    • Mfr. Part No. 440K-T11171
    Each
    £68.76
    Siemens 3SE67 Series Non-Contact Safety Switch, Plastic Housing
    • RS Stock No. 528-0857
    • Mfr. Part No. 3SE6704-3BA
    Each
    £17.87
    Schmersal Actuator, Plastic Housing
    • RS Stock No. 198-7863
    • Mfr. Part No. BPS 33
    Each
    £11.50
    Allen Bradley Guardmaster 440N Series Magnetic Non-Contact Safety Switch, 24V dc, Plastic Housing, 2NC, 4m Cable
    • RS Stock No. 792-3095
    • Mfr. Part No. 440N-G02077
    Each
    £274.72
    Allen Bradley 440N Series Magnetic Non-Contact Safety Switch, 250V ac, Plastic Housing, NC, 2m Cable
    • RS Stock No. 333-574
    • Mfr. Part No. 440N-G02002
    Each
    £165.81
    Schmersal EX-AZ16 Series Non-Contact Safety Switch, Reinforced Thermoplastic Housing, NO/NC, M16
    • RS Stock No. 283-8235
    • Mfr. Part No. EX-AZ16-12ZVRK-M16-3D
    Each
    £86.71
    Omron D4GS Safety Interlock Switch, 2NC, Keyed, Plastic
    • RS Stock No. 861-4641
    • Mfr. Part No. D4GS-N2T
    Each
    £67.20
    Telemecanique Sensors Key
    • RS Stock No. 814-6983
    • Mfr. Part No. XCSZ25
    Each
    £14.90
    SICK RE27 Series Magnetic Non-Contact Safety Switch, 30V dc, Plastic Housing, 3NO, M12
    • RS Stock No. 797-4872
    • Mfr. Part No. RE27-SA05L
    Each
    £55.81
    Telemecanique Sensors XCS-DMP Series Magnetic Non-Contact Safety Switch, 24V dc, Plastic Housing, 2NC
    • RS Stock No. 766-1677
    • Mfr. Part No. XCSDMP791L01M12
    Each
    £90.60
    Allen Bradley Guardmaster 440T Safety Interlock Switch, 4NO, Keyed, Stainless Steel, Mechanical Lock
    • RS Stock No. 394-7542
    • Mfr. Part No. 440T-MRPSE100B
    Each
    £212.68
    Bernstein AG SKT Safety Interlock Switch, 1NC/1NO, Keyed Actuator Included, Glass Fibre Reinforced Thermoplastic
    • RS Stock No. 410-7212
    • Mfr. Part No. 6016419059
    Each
    £31.03
    Omron F3S Series Hall Coded Non-Contact Safety Switch, Plastic Housing, NO/2NC, 2m Cable
    • RS Stock No. 214-6810
    • Mfr. Part No. F3S-TGR-NMPC-21-02
    Each
    £88.15
    Bernstein AG SKI Safety Interlock Switch, 1NC/1NO, Keyed Actuator Included, Glass Fibre Reinforced Thermoplastic
    • RS Stock No. 410-7206
    • Mfr. Part No. 6016819052
    Each
    £32.77
    Allen Bradley Guardmaster 440K Safety Interlock Switch, 2NC/1NO, Keyed, Glass Filled PBT
    • RS Stock No. 351-3975
    • Mfr. Part No. 440K-T11147
    Each
    £51.38
    IDEM WMR Series Magnetic Non-Contact Safety Switch, 250V ac, 316 Stainless Steel Housing, 2NC, 5m Cable
    • RS Stock No. 826-4209
    • Mfr. Part No. 136006
    Each
    £135.12
    Schmersal Key
    • RS Stock No. 198-7481
    • Mfr. Part No. TRIANGULAR KEY TK-M5
    Each
    £9.82
    IDEM CPR Series Magnetic Non-Contact Safety Switch, 250V ac, Plastic Housing, 2NC, M12
    • RS Stock No. 826-4215
    • Mfr. Part No. 113006
    Each
    £92.16
    Allen Bradley Guardmaster 440K Safety Interlock Switch, 2NC/1NO, Keyed Actuator Included, Glass Filled PBT
    • RS Stock No. 427-1127
    • Mfr. Part No. 440K-C21061
    Each
    £40.28
    IDEM SPF-RFID-U Series Magnetic, RFID Non-Contact Safety Switch, 24V dc, Plastic Housing, 2NC, 2m Cable
    • RS Stock No. 826-4340
    • Mfr. Part No. 405001
    Each
    £80.24
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