Best Key Operated Switches AI pick
Chosen by an AI model from its trained knowledge, with its reasoning.
AI pick (line): Schneider Electric Harmony XB4
Harmony XB4 22 mm metal-bezel key selectors are a widely used, rugged option for locking out modes on industrial panels.
Not for: Panels built on 30 mm holes or low-cost equipment that only needs a small keyed power switch.
AI picks by need
For alternative 22 mm supplier
IDEC (brand)
IDEC makes 22 mm and smaller key selector operators for control panels.
Not for: Buyers who need to match an existing Schneider or Eaton panel.
What the AI looks for in Key Operated Switches
- Key removal positions
- Specify which positions allow key removal (e.g., remove in OFF only) This determines whether the key can enforce lockout of a mode.
- Positions and spring return
- 2 or 3 positions; maintained or spring return Spring-return keyed switches are for momentary authorized actions.
- Keying
- Common key vs unique key code Common keys allow any operator with a key to use any switch.
- Panel size
- 22 mm or 30 mm hole Must match the panel cutout.
- Contact blocks
- Confirm NO/NC blocks per position Contact logic defines what each position does.
Brands that matter
- Schneider Electric: Harmony XB4 metal and XB5 plastic operators.
- IDEC: Pilot devices including key selectors.
- Eaton: M22 key operators.
- Siemens: SIRIUS ACT key-operated actuators.
What to avoid
- Keyed switches used as a substitute for proper lockout/tagout.
- Ordering without specifying key removal positions.