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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
    Key Switch Keys & Covers
    Key Switch Keys & Covers
    Key Switches
    Key Switches
    Selector Switch Heads
    Selector Switch Heads
    Selector Switches
    Selector Switches

    2723 Products showing for Key Switches & Selector Switches

    1 of 137
    Lorlin Key Switch, DPDT, 1 A @ 24V ac dc / 115V ac 2-Way Random-Key
    • RS Stock No. 319-815
    • Mfr. Part No. SRL5LD2
    Each
    SGD12.23
    Schneider Electric Handle Selector Switch - (1NO+1NC) 22mm Cutout Diameter, Illuminated 2 Positions
    • RS Stock No. 276-2506
    • Mfr. Part No. XB4BK124G5
    Each
    SGD122.41
    Better World
    Schneider Electric Harmony XB5 Series 2 Position Selector Switch Head, 22mm Cutout, Blue Handle
    • RS Stock No. 746-8576
    • Mfr. Part No. ZB5AK1263
    Each
    SGD39.23
    Better World
    Schneider Electric Selector Switch - (SPDT) 22mm Cutout Diameter, Illuminated 2 Positions
    • RS Stock No. 609-5470
    • Mfr. Part No. XB4BK123M5
    Each
    SGD79.96
    Lorlin Key Switch, DPDT, 1 A @ 24V ac dc / 115V ac 2-Way Random-Key
    • RS Stock No. 665-792
    • Mfr. Part No. SRL5JD2
    Each
    SGD17.05
    Idec IP65 Key Switch, DPST 3-Way
    • RS Stock No. 168-2553
    • Mfr. Part No. YW1K-33DE20
    Each
    SGD28.80
    Lorlin Key Switch, SPDT, 1 A @ 24V ac dc / 115V ac 2-Way Random-Key
    • RS Stock No. 321-026
    • Mfr. Part No. SRL5ED2
    Each
    SGD16.00
    APEM Keylock Switch, DP3T, 4 A 3-Way Common-Key
    • RS Stock No. 125-8237
    • Mfr. Part No. LK6HNB126N3
    Each
    SGD26.71
    Better World
    Schneider Electric Harmony XB5 3-position Key Switch Head, Latching, 22mm Cutout
    • RS Stock No. 746-8535
    • Mfr. Part No. ZB5AG9
    Each
    SGD107.84
    Better World
    Schneider Electric Harmony XB4 Series 3 Position Selector Switch Head, 22mm Cutout, Black Handle
    • RS Stock No. 656-7133
    • Mfr. Part No. ZB4BJ7
    Each
    SGD44.06
    Better World
    Schneider Electric Knob Selector Switch - (SPDT) 22mm Cutout Diameter, Illuminated 2 Positions
    • RS Stock No. 123-8158
    • Mfr. Part No. XB5AK125M5
    Each
    SGD32.56
    Better World
    Schneider Electric Rotary Switch - 3 Positions
    • RS Stock No. 609-6057
    • Mfr. Part No. XB5AD53
    Each
    SGD93.12
    Better World
    Schneider Electric XB4 2-position Key Switch Head, Spring Return, 22mm Cutout
    • RS Stock No. 212-4893
    • Mfr. Part No. ZB4BG6TEC10
    Each (In a Pack of 2)
    SGD135.915
    RS PRO 2 Position Selector Switch Head, 22mm Cutout, Black Handle
    • RS Stock No. 188-1146
    Each
    SGD10.59
    Better World
    Schneider Electric Knob Selector Switch - (2NO) 3 Positions
    • RS Stock No. 330-8694
    • Mfr. Part No. XB4BD33
    Each
    SGD48.26
    Idec IP65 Key Switch, SPST 2-Way
    • RS Stock No. 168-2547
    • Mfr. Part No. YW1K-21BE10
    Each
    SGD41.79
    Schneider Electric Handle Selector Switch - (1NO) 22mm Cutout Diameter 2 Positions
    • RS Stock No. 276-2572
    • Mfr. Part No. XB5AJ21C0
    Each
    SGD57.28
    Better World
    Schneider Electric Harmony XB6 Series 3 Position Selector Switch Head, 16mm Cutout, Black Handle
    • RS Stock No. 342-0609
    • Mfr. Part No. ZB6DD23
    Each
    SGD31.99
    RS PRO Selector Switch - (on-on), Illuminated 2 Positions
    • RS Stock No. 877-1965
    Each
    SGD39.67
    Idec Key for A6 Series Miniature Switches And Pilot Devices
    • RS Stock No. 828-8157
    • Mfr. Part No. IDEC AS6-SK-132
    Each
    SGD19.24
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