Fire Alarm Magnetic Door Holders

On the fire alarm side you would need a control relay to intercept a switch leg of power to the door holder circuit as well as an initiating device such as a smoke detector to activate the relay.

Fire alarm magnetic door holders.

Electromagnetic door holders and releasers keep doors open until they are released by fire alarm systems remote smoke detectors or other switching devices. When de energized by a relay controlled by the fire alarm system or other switch the door is released to a closed position checking the spread of smoke and flames. Door holders are normally energized to magnetically hold doors open. All are reversible for right or left door swing directions.

They provide a high holding force. So please choose the magnetic door holder or magnetic fire door holder and we will quickly ship the products right to your location. These door holder releases have a holding force of approximately 25 lbf 111n. The development of national fire protection association 101 life safety code and smoke detection technology required that smoke detectors release the door holders instead of fusible links.

Door holders closers can play an important role in controlling smoke migration in a building. Some of our most popular magnetic door holders and magnetic fire door holders include rixson electromagnetic door holders cal royal magnetic door holders and more. Wire these holders directly into your fire alarm system. The device holds a door open while energized.

When designing a fire alarm system you may come across the need for magnetic door holders. Mount the wall plate in an electrical outlet box or use a surface mount box sold separately. There are no codes nation or state wide that require doors to be held open. The dorgards are great by the way but if the spec is magnetic door retainers they may want them as opposed to dorgards but if its high end property which a flat worth 3 5 mill is id expect a proper fire alarm in tbh a 2 zone panel is cheap enough and will give you the felxibility you need and give you extra income on repairs and servicing.

When activated by a fire alarm the magnet shuts off and releases the door. In the event of a fire emergency the fire alarm control panel or other compatible control means will release the magnet allowing the door to close to prevent the spread of smoke. In the event of a power failure they release the door to a closed position to keep the facility secure.