M838-A - M838-A mortice hold-open


While power is applied, these devices hold the door open to permit free passage. When triggered, they release, allowing the door to shut. The hold-opens may be linked to a fire alarm system to close automatically in case of emergency, preventing the spread of smoke through the building.


Hold opens are supplied with the 838-3 armature plate. The armature plate is morticed into the door and engages with the magnetic hold-open.


Hold-opens suitable for mortice fixing. Activated by alarm system or remote switch. DC only.

Holding force: 800 N (80 kg)

Replaces M1330 and M1340.


EN 50081-1
EN 50081-2
EMC 89/336/EEC