ABH 20020-US28 628 Armature Head Assembly for Electromagnetic Door Holder – Compatible with ABH 2100, 2300, 2400, 2600, and 2700 Series

Condition: New

The ABH 20020-US28 is a surface-mounted armature head assembly finished in US28 (Sprayed Aluminum), designed to work with ABH’s full range of wall- and floor-mounted electromagnetic door holders. This assembly forms the mechanical half of the magnetic hold-open system—commonly installed on the door leaf and aligned with the wall-mounted electromagnet. It securely holds fire or smoke-rated doors in the open position during normal operation and releases them during fire alarm activation or power failure, restoring fire barrier integrity.

This model features a heavy-duty, die-cast construction and comes pre-packaged with a factory-installed adjustable armature plate. The base is machined for accurate mounting and includes screw holes to align with various ABH electromagnetic units. It is designed for universal compatibility across multiple ABH door holder models, ensuring ease of replacement or retrofit.

🔧 Features

• Compatible with ABH Series 2100, 2300, 2400, 2600, and 2700

• US28 (Sprayed Aluminum) finish for corrosion resistance and aesthetic match

• Surface-mounted armature head with adjustable catch plate

• Heavy-duty construction for high-cycle environments

• Pre-drilled base with 4-point mounting system

• Magnetically-receptive plate ensures secure holding

• Simple mechanical design allows easy field service and alignment

• UL Listed for use with fire-rated door systems

• Meets ANSI/BHMA A156.15 standards

🏢 Applications

This armature head assembly is a vital component for:

• Commercial fire-rated door systems

• Healthcare facilities and hospitals

• Educational institutions and dormitories

• Office buildings and airports

• Hotels and hospitality centers

• Industrial corridors with fire/smoke-rated doors

Designed to support code-compliant automatic release of doors during emergency situations.

🔁 Cross-Referenced & Compatible Models

Compatible with the following ABH magnetic door holder models:

• ABH 2100 Series (Wall Mount)

• ABH 2300 Series (Flush Wall Mount)

• ABH 2400 Series (Floor Mount)

• ABH 2600 Series (Recessed Floor Mount)

• ABH 2700 Series (Heavy Duty Mount)

🛠 Example magnetic base part numbers these armatures work with:

• ABH 2100-US28

• ABH 2300-US28

• ABH 2400-US28

• ABH 2600-US28

• ABH 2700-US28

🔄 Comparable Products

• LCN SEM7850-AT Armature Assembly

• Dorma EM-500 ARMATURE

• Von Duprin SEM 7850 Armature Kit

• SARGENT 680-ARM Replacement Plate

• Rixson SEM 785-90 Armature Plate

🧩 Part of Larger System

This armature assembly is a mechanical companion to electromagnetic holders and does not function alone. It is installed on the door and requires a powered magnet mounted on the wall or floor to create the holding force. Common paired systems include:

• ABH 2100/2400 electromagnetic holders

• Fire alarm system interface to trigger release

• Door closer with automatic latch function

This assembly is also commonly found in UL-listed life safety door systems, making it essential for maintaining compliance with building and fire codes.

Trademark Notice

All product names, brands, and trademarks mentioned remain the property of their respective holders. Any use of such marks is for compatibility and informational purposes only and does not imply affiliation, sponsorship, or endorsement.

Related

• electromagnetic door armature ABH

• armature plate for magnetic door holder

• surface mount magnetic catch assembly

• door holder plate ABH 20020

• US28 aluminum finish door hardware

• fire-rated door holder armature

• compatible magnetic door holder head

• part for ABH 2100 door holder

• magnet catch assembly for smoke doors

Common Requests:

1. “What ABH models are compatible with 20020-US28?”

2. “Armature assembly for ABH magnetic door holder”

3. “Replace ABH 20020 surface mount head on 2400 model”

4. “Sprayed aluminum magnetic door catch replacement”

5. “ABH electromagnetic door holder parts list”

P126; B008; GT00154