DORMA EM504 Electromagnetic Do...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$722.00
$316.89
Dormakaba DORMA EM504 Electromagnetic Door Holder, Semi-flush Wall Mount, Long Catch Plate DOR-EM504

DORMA EM504 Electromagnetic Door Holder, Semi-flush Wall Mount, Long Catch Plate

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Model: EM504-24120-689

In Stock (leaves warehouse same day if ordered before 3pm ET)

$722.00
$316.89
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DORMA EM Series

Electromagnetic Door Holders

The EM Series electromagnetic door holders with dual voltage capability and an adjustable catch plate provide versatility for varying applications. Add-on catch plate extensions further enhance its flexibility.

Door holders ANSI/BHMA certified.

  • Dual voltage capability
  • Adjustable catch plate
  • Silent operation
  • Several mounting methods
  • Superior reliability

Product details

Economical package for controlled release and closing of doors

The DORMA EM Series door holders are composed of a door mounted catch plate and a floor- or wall-mounted electromagnet. This series serves as an economical package for use in conjunction with DORMA door closers whenever controlled release and closing of doors is necessary for safety or convenience such as in hotels, hospitals, and nursing homes.

Superior reliability

The EM Series magnets offer superior reliability with built-in protection and low residual magnetism so they release easily even in applications meeting ADA requirements with minimal spring force door closers.

Several mounting methods for EM Series Electromagnetic Door Holders

Brackets are not required for recessed, flush, or surface mounting. The catch plate on the door features a ball-shaped pivot arm for adjustability to further ensure perfect alignment. Optional extension rods are available to accommodate greater distances between the door and wall.

Manufacturer Resources

Product Specs

Product Group:
Electronic Access Controls
Series:
EM Series
Application:
Wall Mount, Single Door
Product Subgroup:
Electromagnetic Door Holders
Product Type:
Wall Mount Electromagnetic Door Holders
Subcategory:
Electromagnetic Door Holders
Commercial/Residential:
Commercial
Electronic:
Yes
Product Voltage:
24VDC/24VAC or 120V
Door Hand Direction:
Non-Handed
Mounting Method:
Wall
Product Category:
Electronic Access Controls

Dormakaba EM504-24120-689 – Frequently Asked Questions

1) What is the DORMA EM504 electromagnetic door holder used for?
The EM504 is an electromagnetic door holder that keeps fire doors open during normal operation. It releases automatically when the fire alarm activates or power is lost. The semi-flush wall mount design works with the included long catch plate.
2) What door types and weights are compatible with this holder?
This electromagnetic holder works with standard commercial doors. Check the manufacturer specifications for exact weight limits. Verify door material compatibility and ensure proper alignment between wall magnet and door-mounted catch plate.
3) Does door handing matter for installation?
Door handing affects catch plate positioning. The long catch plate provides adjustment range for proper alignment. Measure the door swing arc to ensure the catch plate contacts the magnet when door is fully open.
4) What finish options are available?
DORMA electromagnetic holders typically come in standard commercial finishes. Check product specifications for available finish options. Select finishes that match your door hardware for consistent appearance.
5) What are the power requirements?
Electromagnetic door holders require low voltage DC power, typically 24VDC. They must be wired to the fire alarm system for automatic release. Consult electrical specifications and local codes for proper power supply sizing.
6) Are there fire code requirements for electromagnetic door holders?
Yes. Electromagnetic door holders on fire doors must release when fire alarm activates or power fails. They require integration with the building fire alarm system. Check local fire codes and AHJ requirements before installation.
7) What parts and accessories are included?
The EM504 includes the electromagnetic holder unit, long catch plate, and mounting hardware. Installation template may be included. Verify all components are present before beginning installation.
8) How is the semi-flush wall mount installed?
Semi-flush mounting requires cutting a recess in the wall. Use the manufacturer template for precise positioning. Mount the catch plate on the door at the correct height for alignment. Run low voltage wiring to fire alarm panel.
9) How do you maintain electromagnetic door holders?
Keep magnet face and catch plate clean of debris. Test release function monthly by activating fire alarm or removing power. Check alignment if holding force seems weak. Verify electrical connections remain secure.
10) What are similar DORMA electromagnetic holder models?
DORMA offers various electromagnetic door holder models with different mounting styles and holding forces. Browse our door hardware section for compatible models and mounting options.
11) What field conditions affect performance?
Door warping, building settling, and loose hinges can affect alignment. Extreme temperatures may impact holding force. Ensure catch plate remains parallel to magnet face. Check alignment after any door adjustments.
12) What measurements are needed for installation?
Measure door thickness, wall depth for recess, and door swing radius. Note height from floor to desired holder position. Verify clearances for catch plate when door opens. Use manufacturer template for exact cutout dimensions.
How fast can I get the Dormakaba EM504-24120-689 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Dormakaba EM504-24120-689 come with a warranty?
Absolutely. The Dormakaba EM504-24120-689 is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Dormakaba EM504-24120-689?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
Why buy the Dormakaba EM504-24120-689 from ZenSupply?
ZenSupply makes it easy to get the commercial door hardware you need—fast shipping, expert support, and rewards on every order. Our team is always ready to help you choose the right product for your project.
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