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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

    2676 Products showing for Key Switches & Selector Switches

    1 of 134
    RS PRO 2 Position Selector Switch Head, 22mm Cutout, Black Handle
    • RS Stock No. 188-1148
    Each
    HK$54.30
    Better World
    Schneider Electric Harmony XB4 2-position Key Switch Head, Spring Return from Left and Right, 22mm Cutout
    • RS Stock No. 330-9170
    • Mfr. Part No. ZB4BG6
    Each
    HK$783.80
    Eaton Replacement key for 22.5 mm Modular Pushbuttons
    • RS Stock No. 893-8584
    • Mfr. Part No. 111764 M22-ES-MS2
    Each
    HK$117.30
    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)
    HK$598.50
    Eaton 2-position Key Switch, Latching, 22.5mm Cutout
    • RS Stock No. 272-7248
    • Mfr. Part No. 111789 M22-WRS-MS8
    Each
    HK$794.73
    RS PRO Selector Switch - (DPST)
    • RS Stock No. 450-8968
    Each
    HK$51.60
    Schneider Electric Handle Selector Switch - (SPDT) 22mm Cutout Diameter 2 Positions
    • RS Stock No. 276-2560
    • Mfr. Part No. XB5AD25C0
    Each
    HK$241.00
    Better World
    Schneider Electric IP66, IP67, IP69(IP69K) Key Switch, 1NO 2-Way
    • RS Stock No. 330-8723
    • Mfr. Part No. XB4BG21
    Each
    HK$443.50
    RS PRO Key Selector Switch - (2NO) 22.5mm Cutout Diameter 3 Positions
    • RS Stock No. 238-3958
    Each
    HK$299.10
    Eaton RMQ Titan 3-position Key Switch Head, Maintained, 22.5mm Cutout
    • RS Stock No. 110-4547
    • Mfr. Part No. 216900 M22-WRS3
    Each
    HK$362.00
    Lorlin Key Switch, DPDT, 1 A @ 24V ac dc / 115V ac 2-Way Random-Key
    • RS Stock No. 665-786
    • Mfr. Part No. SRL5KD2
    Each
    HK$68.30
    EAO IP67 Key Switch, 2 NO + 2NC
    • RS Stock No. 175-7877
    • Mfr. Part No. 14-136.025K2
    Each
    HK$758.30
    Lorlin Key Switch, SP-CO, 1 A @ 24V ac dc / 115V ac 2-Way Common-Key
    • RS Stock No. 321-048
    • Mfr. Part No. SRL5ES2850
    Each
    HK$98.90
    Better World
    Siemens Selector Switch - (SPST), Illuminated 2 Positions
    • RS Stock No. 874-2140
    • Mfr. Part No. 3SU1150-2BF60-1BA0
    Each
    HK$346.10
    Better World
    Siemens SIRIUS ACT 3SU10 2-position Key Switch Head, Latching, 22mm Cutout
    • RS Stock No. 135-5633
    • Mfr. Part No. 3SU1050-4BF01-0AA0
    Each
    HK$572.90
    Schneider Electric ZBD Series Selector Switch Head, 22mm Cutout
    • RS Stock No. 357-368
    • Mfr. Part No. ZBDD2
    1 Pack of 10
    HK$478.34
    Schneider Electric Handle Selector Switch - (SPDT) 22mm Cutout Diameter, Illuminated 3 Positions
    • RS Stock No. 276-2582
    • Mfr. Part No. XB5AK133B5C0
    Each
    HK$540.60
    Omron Selector Switch - (DPDT)
    • RS Stock No. 265-5167
    • Mfr. Part No. A165S-J3M-2
    Each
    HK$112.00
    Eaton RMQ Titan Series 2 Position Selector Switch Head, 23mm Cutout
    • RS Stock No. 110-4541
    • Mfr. Part No. 216869 M22S-WRK
    Each
    HK$119.10
    RS PRO Cover for Key Switch
    • RS Stock No. 325-4890
    Each
    HK$140.80
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