APEM LK Keylock Switches

APEM LK Keylock Switches provide a high level of security with a four-tumbler key barrel. LK series 19mm panel mount key switches serve a variety of commercial applications that require security and restricted access. LK Keylock Switches provide multiple key pull position options and 45° or 90° indexing. This APEM series features a 4A (at 125VAC or 28VDC) or 2A (at 250VAC) contact rating and -30°C to +85°C operating temperature range.


  • Contact rating
    • 4A at 125VAC or 28VDC
    • 2A at 250VAC
  • ≤10mΩ contact resistance
  • ≥109MΩ insulation resistance
  • 1000VRMS minimum at sea level
  • 6000 cycles electrical life at full load
  • 30°C to +85°C operating temperature range
  • Four-disc tumbler
  • 45° and 90° indexing options
  • Gold-plated contacts and terminals


  • Automatic door control
  • Fire-alarm panels
  • Power distribution
  • Automation control
  • Transportation
  • Communication systems
Published: 2016-11-16 | Updated: 2022-03-11