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    Key Switches & Selector Switches

    A key switch or lock switch setup is an ideal way to enhance the security and safety of various important - or potentially hazardous - workplace systems and mechanisms. Our selection of key switches and covers is sourced from leading brands known for reliability, durability and quality, including APEM, C&K, Honeywell, Omron, Lorlin, Saia-Burgess and NKK Switches.

    How do key switches work, and what are the main differences between them?

    Key switches or lock switches include a range of switch types that can only be actuated when used simultaneously with a physical key. This helps prevent unauthorised access to (or accidental triggering of) whichever system, machinery or process is controlled by the key switch actuator mechanism.

    Key switches are widely used in processes such as automation control, comms systems, fire and security alarm panels, power distribution, and automatic door controls. Important factors to consider when buying key switches online include:

    • Number of positions - this can typically range anywhere between 1-6 positions, giving you full control over how many different states and potential functions the key switch is able to differentiate between as it’s turned.
    • Switch operation - common types of key switch operation include latching, momentary, maintained, snap action, and spring return. These operations can be used to control various lock switch function arrays such as off-on, on-off-start, break before make, and acc-off-ign.
    • Contact configuration - controls how the key switch behaves at various positions when turned, with common examples including Single Throw (ST), Single Pole Double Throw (SPDT), and Double Pole Double Throw (DPDT).
    • Key trapping - whether or not the key must be retained in the lock switch once actuated, in order for the relevant circuit to remain open/closed.
    • IP ratings - the level of protection you require against ingress of dirt/moisture around the key switch housing, dependent on environmental conditions.
    • Key switch covers and key types - caps, covers and bezels can all improve security or ease of access to key switch modules, while key types can range from simple fish keys to fully toothed and cut spares for various lock switch series and standards.
    Key Switch Heads
    Key Switch Heads
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    Key Switch Keys & Covers
    Key Switches
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    Selector Switch Heads
    Selector Switch Heads
    Selector Switches
    Selector Switches

    2656 Products showing for Key Switches & Selector Switches

    1 of 133
    EAO 2-position Key Switch Head
    • RS Stock No. 200-4097
    • Mfr. Part No. 704.122.0
    Each
    $108.75
    RS PRO Automotive Ignition Switch, 70 A @ 12 V 4-Way
    • RS Stock No. 325-4862
    Each
    $321.48
    Lorlin Key Switch, SP-CO, 1 A @ 24V ac dc / 115V ac 2-Way Common-Key
    • RS Stock No. 321-054
    • Mfr. Part No. SRL5DS2850
    Each
    $24.87
    Lorlin Key Switch, SPST, 500 mA @ 24 V 2-Way Common, Flat-Key
    • RS Stock No. 562-545
    • Mfr. Part No. SKL-12-AS2
    Each
    $17.53
    Better World
    Schneider Electric ZB5 Series 2 Position Selector Switch Head, 22mm Cutout, Black Handle
    • RS Stock No. 331-0265
    • Mfr. Part No. ZB5AD2
    Each
    $51.90
    ABB Short Handle Selector Switch - (1NC) 2 Positions
    • RS Stock No. 232-0292
    • Mfr. Part No. 1SFA619201R1046 C2SS2-10B-01
    Each
    $36.40
    Better World
    Schneider Electric Selector Switch - 2 Positions
    • RS Stock No. 609-6091
    • Mfr. Part No. XB5AG61
    Each
    $154.91
    Better World
    Schneider Electric Harmony XB5 Series 3 Position Selector Switch Head, 22mm Cutout, White Handle
    • RS Stock No. 746-8579
    • Mfr. Part No. ZB5AK1313
    Each
    $101.59
    Better World
    Schneider Electric Knob Selector Switch - (SPST) 22mm Cutout Diameter 2 Positions
    • RS Stock No. 123-8152
    • Mfr. Part No. XB5AD41
    Each
    $99.30
    Better World
    Schneider Electric ZB5 2-position Key Switch Head, Latching, 22mm Cutout
    • RS Stock No. 221-1981
    • Mfr. Part No. ZB5AG02D
    Each
    $181.41
    Lorlin High Security Key Switch, DPST, 50 mA @ 250 V ac 2-Way Flat-Key
    • RS Stock No. 562-583
    • Mfr. Part No. DSL-6-A-D
    Each
    $182.04
    Better World
    Schneider Electric Harmony XB4 2-position Key Switch Head, Latching, 22mm Cutout
    • RS Stock No. 609-2308
    • Mfr. Part No. ZB4BG412
    Each
    $158.26
    Better World
    Siemens SIRIUS ACT 3SU10 Series 3 Position Selector Switch Head, 22mm Cutout, Black Handle
    • RS Stock No. 193-5207
    • Mfr. Part No. 3SU1002-2BP10-0AA0
    Each
    $38.86
    Lorlin IP66, IP67 Keylock Switch, SPST, 1 A @ 115 V ac 3-Way Common-Key
    • RS Stock No. 896-8070
    • Mfr. Part No. WRL-5-P-D-2-RS
    Each
    $50.85
    Better World
    Schneider Electric ZB4 Series 3 Position Selector Switch Head, 22mm Cutout, Orange Handle
    • RS Stock No. 211-8540
    • Mfr. Part No. ZB4BK15537
    Each
    $70.17
    ABB ABB Modular 2-position Key Switch Head, Latching, 22mm Cutout
    • RS Stock No. 757-8856
    • Mfr. Part No. 1SFA611280R1001 M2SSK1-101
    Each
    $86.89
    Better World
    Schneider Electric Selector Switch - 2 Positions
    • RS Stock No. 609-5509
    • Mfr. Part No. XB4BK125B5
    Each
    $224.76
    Better World
    Schneider Electric ZB4 3-position Key Switch Head, Spring Return, 22mm Cutout
    • RS Stock No. 220-5274
    • Mfr. Part No. ZB4BG712
    Each
    $164.05
    Better World
    Schneider Electric Harmony XB5 Series 3 Position Selector Switch Head, 22mm Cutout, Black Handle
    • RS Stock No. 331-0271
    • Mfr. Part No. ZB5AD3
    Each
    $44.45
    Better World
    Schneider Electric Harmony XB4 2-position Key Switch Head, Latching, 22mm Cutout
    • RS Stock No. 609-2241
    • Mfr. Part No. ZB4BG212
    Each
    $163.66
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