A4 and A8 Single Series Monitored

Single Series Monitored

The Single Series Electromagnetic Locks operate with holding forces from 250kg up to 580kg. Covering a range of applications the A4 and A8 Electromagnets are ideal for applications from cupboard doors through to high use commercial swing doors.

With fixing options including wood, aluminium and steel constructions, as well as glass door applications, the range caters to most electromagnetic needs.

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: reed switch monitoring on all models, hall-effect monitoring on A4 and A8 models
  • Instantaneous Release: smart electronics on the A Series Electromagnets eliminate residual magnetism
  • 5 Year ASSA ABLOY Warranty


Hall / Bond Monitoring

This indicates that the lock is powered and that the armature plate is in position and magnetically bonded (it monitors if the magnet is locked)

Reed Switch Monitoring

An integrated reed switch monitors the door position separately (it monitors the position of the door)


  • Aluminium doors
  • Glass doors
  • IT Storage rooms
  • Access control
  • Surface mount for inswing and outswing doors

Standards and Compliance

  • CE Approved
  • RCM Certified

A4 Magnet
Holding Force 250kg - 280kg
Dimensions (L)240 x (H)48.5 x (D)25mm
Voltage 12Vdc/ 24Vdc ±10%
Current 500mA @ (12Vdc) 250mA @ (24Vdc)
Monitoring Hall-Effect (Optional)
Operating Temperature -10 to 55 Degrees
Operating Humidity 0 - 90%

A8 Magnet
Holding Force 550kg - 580kg
Dimensions (L)265 x (H)71.8 x (D) 39 mm
Voltage 12Vdc/ 24Vdc ±10%
Current 420mA @ (12Vdc) 210mA @ (24Vdc)
Monitoring Hall-Effect & Reed Switch
Operating Temperature -10 to 55 Degrees
Operating Humidity 0 - 90%

Specification Statement
The Single Series 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 back up system. In some cases the Magnet Armature Plate pivotsto accommodate door drop. The lock needs to beequipped with “smart electronics” that have zero residual magnetism (instantaneous release). This is crucial for correct operation.

 A4 Monitored Lock

A8 Monitored Lock



Ordering information
Ordering Information
Description Part Number
EMA4 E/Magnet 12/24Vdc Single Monitored
EMA8 E/Magnet 12/24Vdc Single Monitored