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

2822 Products showing for Key Switches & Selector Switches

6 of 142
In Stock
Schneider Electric Harmony Series 2 Position Selector Switch Head, 22 mm Cutout, Black Handle, IP67
  • RS Stock No. 276-2825
  • Mfr. Part No. ZB5AD2C0
Subtotal (1 unit)
€12.99(exc. VAT)
€12.99/unit
In Stock
RS PRO 2-position Key Switch Head, Latching, 22 mm Cutout
  • RS Stock No. 188-1149
Subtotal (1 unit)
€14.33(exc. VAT)
€14.33/unit
In Stock
RS Better World
Schneider Electric Selector Switch - (SPDT) 30 mm Cutout Diameter 2 Positions
  • RS Stock No. 185-3538
  • Mfr. Part No. XB5FD25
Subtotal (1 unit)
€23.51(exc. VAT)
€23.51/unit
In Stock
Schneider Electric Harmony Series 3 Position Selector Switch Head, 22 mm Cutout, Black Handle, IP66, IP69, IP67
  • RS Stock No. 330-9085
  • Mfr. Part No. ZB4BD5
Subtotal (1 unit)
€14.79(exc. VAT)
€14.79/unit
In Stock
RS PRO RSEG 3-position Key Switch Head, Spring Return, 22 mm Cutout
  • RS Stock No. 188-1155
Subtotal (1 unit)
€14.33(exc. VAT)
€14.33/unit
Limited stock
Schneider Electric Harmony Series 3 Position Illuminated Selector Switch Head, 22 mm Cutout, Green Handle, IP66, IP69,
  • RS Stock No. 609-2465
  • Mfr. Part No. ZB4BK1533
Subtotal (1 unit)
€36.05(exc. VAT)
€36.05/unit
In Stock
RS Better World
Schneider Electric Selector Switch - 22.5 mm Cutout Diameter 2 Positions
  • RS Stock No. 287-6246
  • Mfr. Part No. XB4BD215
Subtotal (1 unit)
€24.81(exc. VAT)
€24.81/unit
In Stock
Schneider Electric Knob Selector Switch - 5 Positions
  • RS Stock No. 776-3818
  • Mfr. Part No. A9E15121
Subtotal (1 unit)
€147.91(exc. VAT)
€147.91/unit
In Stock
ABB Short Handle Selector Switch - (1 NO/1 NC) 3 Positions
  • RS Stock No. 231-9432
  • Mfr. Part No. 1SFA619212R1076 C3SS3-10B-11
Subtotal (1 unit)
€21.22(exc. VAT)
€21.22/unit
In Stock
RS PRO Selector Switch Selector Switch - (1 CO) 22 mm Cutout Diameter 2 Positions
  • RS Stock No. 145-0622
Subtotal (1 unit)
€17.10(exc. VAT)
€17.10/unit
In Stock
Schneider Electric Harmony 2-position Key Switch Head, Maintained, 22 mm Cutout
  • RS Stock No. 330-9170
  • Mfr. Part No. ZB4BG6
Subtotal (1 unit)
€38.69(exc. VAT)
€38.69/unit
In Stock
Allen Bradley 800F 2-position Key Switch Head, Latching, 22 mm Cutout
  • RS Stock No. 800-3527
  • Mfr. Part No. 800FP-KM21
Subtotal (1 unit)
€35.48(exc. VAT)
€35.48/unit
In Stock
Schneider Electric Harmony 9001K Series 4 Position Selector Switch Head, 30 mm Cutout, IP66
  • RS Stock No. 623-7488
  • Mfr. Part No. 9001KS88FB
Subtotal (1 unit)
€49.86(exc. VAT)
€49.86/unit
In Stock
Lorlin Key Switch, DPDT, 1A 2-Way Common-Key
  • RS Stock No. 739-2911
  • Mfr. Part No. HRL-5-M-S-2-RS
Subtotal (1 unit)
€13.27(exc. VAT)
€13.27/unit
In Stock
Lorlin IP67 Key Switch, SPDT, 5A 2-Way Common-Key
  • RS Stock No. 562-606
  • Mfr. Part No. WRL-5-E-S-2-B
Subtotal (1 unit)
€24.59(exc. VAT)
€24.59/unit
In Stock
Schneider Electric Harmony Series 2 Position Selector Switch Head, 22 mm Cutout, Black Handle, IP69
  • RS Stock No. 211-8537
  • Mfr. Part No. ZB4BJ291
Subtotal (1 unit)
€77.54(exc. VAT)
€77.54/unit
In Stock
Schneider Electric Harmony 2-position Key Switch Head, Latching, 22 mm Cutout
  • RS Stock No. 609-2314
  • Mfr. Part No. ZB4BG414
Subtotal (1 unit)
€64.30(exc. VAT)
€64.30/unit
In Stock
Allen Bradley Selector Switch - (SPDT) 30 mm Cutout Diameter 3 Positions
  • RS Stock No. 183-4500
  • Mfr. Part No. 800T-J2A
Subtotal (1 unit)
€90.80(exc. VAT)
€90.80/unit
In Stock
Schneider Electric Harmony XB6 3-position Key Switch Head, Latching, 16 mm Cutout
  • RS Stock No. 221-985
  • Mfr. Part No. ZB6AGD
Subtotal (1 unit)
€41.40(exc. VAT)
€41.40/unit
In Stock
Schneider Electric Harmony XB4 Series 3 Position Selector Switch Head, 22 mm Cutout, Black Handle, IP69K, IP67, IP69
  • RS Stock No. 211-993
  • Mfr. Part No. ZB4BD87
Subtotal (1 unit)
€31.25(exc. VAT)
€31.25/unit
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