Norton Rixson 1/2" Armature Ex...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$80.44
$62.96
Norton Rixson 1/2" Armature Extension for 900 Series Electromagnetic Door Release with Aluminum Finish

Norton Rixson 1/2" Armature Extension for 900 Series Electromagnetic Door Release with Aluminum Finish

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Model: 900-50-689
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$80.44
$62.96
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Norton Rixson 1/2" Armature Extension for 900 Series Electromagnetic Door Release with Aluminum Finish

OEM Replacement Parts Kit for Electromagnetic Door Holders

The Norton Rixson 900-50-689 armature extension restores smooth, reliable hold-open performance to corridor doors equipped with 900 Series electromagnetic door holders. This OEM replacement assembly features a 1/2" extension design with swivel/adjustable armature that self-aligns to the magnet for strong, quiet contact. Engineered with durable construction and architectural finish 689 (Aluminum Painted), this kit delivers the consistency building managers expect for high-traffic commercial environments.

Professional Features & Benefits

  • Direct OEM Compatibility: Engineered specifically for Norton Rixson 900 Series electromagnetic door holders for guaranteed fit and performance.
  • Reliable Hold & Release Operation: Keeps doors firmly held during normal operation and instantly releases when power is removed or fire alarm activates.
  • Self-Aligning Design: Swivel/adjustable armature design helps self-align to the magnet for strong, quiet contact and optimal performance.
  • Complete Hardware Kit: Includes mounting hardware for standard commercial door materials including wood, hollow metal, and aluminum applications.
  • High-Traffic Durability: Durable, low-maintenance construction designed specifically for demanding commercial and institutional environments.
  • Professional Finish: Architectural finish 689 (Aluminum Painted) provides a clean, professional appearance that complements commercial door hardware.
  • Code-Compliant Application: Code-friendly usage when paired with listed 900 Series holders for smoke/fire barrier applications in commercial facilities.
  • Fast Retrofit Installation: Fits existing 900 Series preparation with minimal downtime for efficient maintenance operations.

Technical Specifications

  • Application: Industrial Doors
  • Commercial/Residential: Commercial
  • Department: Door Hardware
  • Door Hand Direction: Non-Handed
  • Electronic: Yes
  • Product Category: Door Controls
  • Product Finish: Aluminum
  • Product Group: Door Controls
  • Product Subgroup: Electromagnetic Door Holder / Releases
  • Product Type: Electromagnetic Door Holder / Releases
  • Subcategory: Electromechanical Closers & Holders

Installation & Operation

  1. Verify electrical requirements match available power supply and confirm compatibility with existing 900 Series electromagnetic door holder system.
  2. Disconnect power supply before beginning installation. Follow all applicable electrical codes and safety procedures.
  3. Mount the armature assembly on the door leaf using provided fasteners appropriate for door material (wood, hollow metal, or aluminum).
  4. Route and connect wiring according to manufacturer wiring diagrams, ensuring proper connection to the existing 900 Series holder system.
  5. Configure operational settings and verify proper alignment between armature and magnet for optimal hold strength.
  6. Restore power and test all functions including normal hold-open operation, release on power loss, and integration with fire alarm systems.
  7. Complete final inspection and document settings. Refer to manufacturer documentation for complete wiring diagrams, programming instructions, and troubleshooting.

Professional Applications

  • Healthcare Institution Corridor Doors
  • Educational Facility Fire Barrier Systems
  • Commercial Office Building Access Control
  • Hospitality Facility Door Management
  • Industrial Facility Safety Systems
  • Multi-Tenant Residential Fire Safety
  • Government Building Emergency Systems

Why Choose Norton Rixson Quality?

Norton Rixson electromagnetic door holder components deliver professional-grade reliability with durable, low-maintenance construction designed for high-traffic commercial environments. This OEM replacement kit ensures consistent performance backed by the manufacturer's limited warranty. Engineered for demanding commercial applications where dependable hold-open and emergency release performance is essential for life safety compliance.

Manufacturer Resources

Product Specs

Condition:
New
Application:
Industrial Doors
Product Group:
Door Controls
Product Subgroup:
Electromagnetic Door Holder / Releases
Product Type:
Electromagnetic Door Closers
Subcategory:
Electromechanical Closers & Holders
Commercial/Residential:
Commercial
Electronic:
Yes
Product Finish:
Aluminum
Door Hand Direction:
Non-Handed
Product Category:
Door Controls
Department:
Door Hardware

Norton Rixson 900-50-689 – Frequently Asked Questions

1) What does the Norton Rixson 900-50-689 armature extension actually do on a magnetic door holder?
It is the door-mounted half of the assembly, not the magnet. The 900-50 is a 1/2 inch armature extension that mounts on the door leaf and makes contact with the 900 Series electromagnet mounted on the wall or floor. The swivel/adjustable armature self-aligns to the magnet face so the hold is strong and quiet. When power drops or the fire alarm signals, the magnet lets go and the armature releases with the door. If your magnet body is bad, this part will not fix it.
2) Will this armature work on a 900 Series holder that is already installed, or do I need to redrill the door?
It fits the existing 900 Series preparation, so it goes back into the same holes on a door already set up for a 900 Series holder. It is an OEM replacement built specifically for Norton Rixson 900 Series electromagnetic door holders. Mounting hardware is included for wood, hollow metal, and aluminum doors.
3) When would I need the 1/2 inch extension armature instead of a flat one?
The extension closes a gap. If the magnet face and the door-mounted armature do not meet flush because of wall trim, a stop, or the projection of the magnet housing, the 1/2 inch extension picks up that offset so the two faces make full contact. Full face contact is what gives you the rated hold; a partial contact patch gives you doors that drift loose. Measure the standoff at your opening before choosing extension length.
4) Do I have to order a left-hand or right-hand version of this Rixson armature?
No handing to specify. The 900-50 armature is non-handed, so the same part serves doors swinging either direction. That also means one part number covers every corridor door in a building running 900 Series holders.
5) Can I use this on a smoke barrier or fire door hold-open in a hospital corridor?
That is the application it is built for. Paired with a listed 900 Series holder, it is code-friendly usage for smoke and fire barrier openings, and the typical installs are healthcare corridor doors, school fire barrier systems, and multi-tenant residential. The life safety function comes from the holder and the alarm tie-in; the armature is the release surface on the door.
6) Does this armature need to be wired?
The armature itself is the passive steel face the magnet grabs; the power goes to the 900 Series holder. Installation still calls for cutting power first, confirming your supply matches the existing holder system, and following the manufacturer wiring diagrams for that holder before testing hold, release on power loss, and the fire alarm drop.
7) My magnetic door holders keep letting doors swing loose. Is replacing the armature the fix?
Often it is. A worn, bent, or seized swivel armature will not sit flat on the magnet face, and partial contact means weak hold even with the magnet working fine. The 900-50 restores a fresh self-aligning contact surface on 900 Series holders. Before you order, check that the magnet still energizes and that the armature-to-magnet alignment is the actual problem, since this kit only replaces the door-side half.
8) What finish does the 900-50 armature extension come in?
One finish only: 689, aluminum painted. That is the standard grey architectural paint finish and it matches the usual finish on commercial closers and holders, so it blends on most corridor and stairwell doors without a special order.
How fast can I get the Norton Rixson 900-50-689 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 Norton Rixson 900-50-689 come with a warranty?
Absolutely. The Norton Rixson 900-50-689 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 Norton Rixson 900-50-689?
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 Norton Rixson 900-50-689 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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