A8 Series Weather Resistant

Weather Resistant Electromagnetic Lock

The Weather Resistant Electromagnetic Lock operates with holding forces from 250kg up to 580kg. Covering a range of applications these are ideal where magnets are exposed to the weather. With fixing options including wood, aluminium and steel constructions as well as glass door applications, the range caters to most external needs.The electromagnets are available in monitored models using hall-effect monitoring. These Electromagnetic Locks are CSIRO approved for use on fire doors and are characterised by their high quality and proven reliability in both fire and security applications. The “smart electronics” have zero residual magnetism meaning instantaneous release when required. An additional advantage is the ability to select either 12V or 24VDC application on site.

Key Features

  • Fail-safe: unlocks when power is removed
  • Easy installation: suitable for both new and retrofit usage
  • High holding force: refer to the technical data overleaf
  • Self-alignment: armature plate pivots to accommodate door drop
  • Silent operation: no humming or buzzing
  • Dual voltage: site selectable 12 or 24 Vdc
  • Monitoring: hall-effect status
  • 5 Year ASSA ABLOY Warranty.


Hall / Bond Monitoring

Hall-effect position sensors are non contact devices that convert energy from a magnetic field into an electrical signal. This indicates that the lock is powered and that the Armature Plateis in position and magnetically bonded (it monitors if the magnet is locked).


  • Outdoor / exposed doors
  • Doors located in coastal areas

Standards and Compliance

  • CE Approved
  • RCM Certified

A8 Weather Resistant Electromagnet
Holding Force 500kg - 580kg
Dimensions (L)220 x (H)68.5 x (D)36 mm
Voltage 12Vdc/ 24Vdc ±10%
Current 420mA @ (12Vdc) 210mA @ (24Vdc)
Monitoring Hall-Effect (Optional)
Operating Temperature -25 to 55 Degrees
Operating Humidity 0 - 90%


Specification Statement
The Weather Resistant Electromagnetic Lock should be constructed in an aluminium case with heavy duty electromagnet. The range only operates in Fail Safe mode and relies on a secondary lock or battery backup system.In some cases the Magnet Armature Plate pivots to accommodate door drop.

 A4 Monitored Lock

A8 Monitored Lock



Ordering information
Ordering Information
Description Part Number
EMA4 E/Magnet Weather Res 12/24Vdc SingleMonitored