LCN 4010-3049FL Fusible Link H...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$379.00
$283.77
LCN 4010-3049FL Fusible Link Hold-Open Arm for Door Closers with 165°F Release Temperature

LCN 4010-3049FL Fusible Link Hold-Open Arm for Door Closers with 165°F Release Temperature

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Model: 4010-3049FL RH 689
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$379.00
$283.77
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LCN Fusible Link Hold-Open Arm for 4010 Series Door Closers with 165°F Release Temperature

Fire Safety Hold-Open Arm with Automatic Release

The LCN fusible link hold-open arm provides automatic fire safety compliance for 4010 Series door closers. This handed replacement component releases the hold-open function when exposed to temperatures above 165°F, ensuring doors automatically close during fire emergencies. The precision-engineered design maintains a maximum 1/8" (3 mm) reveal for optimal door positioning and ADA compliance.

Professional Features & Benefits

  • Automatic Fire Safety Release: Releases hold-open function at 165°F temperature threshold for reliable fire door compliance and occupant safety.
  • Precision Door Positioning: Maintains 1/8" (3 mm) maximum reveal for consistent door alignment and professional appearance.
  • 4010 Series Compatibility: Specifically designed for LCN 4010 Series door closers ensuring proper fit and reliable operation.
  • Handed Configuration: Available in handed versions to accommodate specific door swing requirements and installation needs.
  • ADA Compliant Design: Meets accessibility requirements for commercial door applications with proper force and timing characteristics.
  • Commercial-Grade Construction: Built for demanding commercial applications where reliable hold-open and fire safety functions are essential.

Technical Specifications

  • ADA Compliant: Yes
  • Commercial/Residential: Commercial
  • Department: Door Hardware
  • Parts and Accessories Type: Replacement Parts
  • Product Attribute: Parts and Accessories
  • Product Category: Door Controls
  • Product Group: Door Controls
  • Product Model: 4020-3049
  • Product Subgroup: Parts and Accessories
  • Product Type: Hold Open Arm
  • Series: 4020 Series
  • Subcategory: Parts and Accessories

Professional Applications

  • Commercial Office Buildings
  • Educational Facilities
  • Healthcare Institutions
  • Retail Establishments
  • Industrial and Warehouse Facilities
  • Multi-Tenant Residential Properties
  • Government and Municipal Buildings

Why Choose LCN Quality?

LCN fusible link arms deliver professional-grade fire safety compliance with precision-engineered 165°F release temperature and 1/8" maximum reveal specifications. ADA compliant design ensures reliable performance in demanding commercial applications where automatic fire door closure and accessibility compliance are essential.

Manufacturer Resources

LCN Full Line Catalog

Product Specs

Series:
4020 Series
Subcategory:
Parts and Accessories
Product Group:
Door Controls
Product Subgroup:
Parts and Accessories
Product Type:
Door Closer Arm
Commercial/Residential:
Commercial
ADA Compliant:
Yes
Parts and Accessories Type:
Replacement Parts
Product Attribute:
Parts and Accessories
Product Model:
4020-3049
Product Category:
Door Controls
Department:
Door Hardware

LCN 4010-3049FL RH 689 – Frequently Asked Questions

1) What does the fusible link on the LCN 4010-3049FL hold-open arm actually do in a fire?
The fusible link arm holds the door open during normal use and drops the hold-open when the surrounding air passes 165 degrees F, letting the closer pull the door shut. That is how a door on an electrically unsupervised opening still closes in a fire without any wiring, detector, or power supply.
2) Do I have to order the LCN 4010-3049FL hold-open arm left hand or right hand?
Yes, it's handed. The arm comes as LH or RH, so pick the hand that matches the door swing you are working on. Ordering the wrong hand means the arm will not set up correctly on the closer. Both hands are offered in all six finishes: 689 aluminum, 690 statuary bronze, 691 light bronze, 693 gloss black, 695 dark bronze and 696 brass.
3) Which LCN closers does the 4010-3049FL fusible link arm fit?
It's built for LCN 4010 Series door closers, and LCN catalogues the part under the 4020 Series as model 4020-3049. It's a replacement arm assembly only, not a complete closer, so the closer body has to already be on the door.
4) What is the maximum reveal for the LCN fusible link hold-open arm?
1/8 inch (3 mm) maximum reveal. If the face of your frame stop sits further back than that from the door face, this parallel-arm style fusible link assembly will not set up correctly and you need a different arm or a drop plate to make up the reveal.
5) I need a hold-open arm but my closer is a Sargent or Falcon, not an LCN. What are my options?
Arms are not interchangeable across closer brands. For Sargent 351 and 281 closers, the Sargent 25-H hold-open arm covers standard and top jamb mount, and the 25-CPSH is the hold-open parallel arm with compression stop. On the Falcon side, the SC70A-3049/PA is the hold-open arm with PA bracket for SC70A closers, and the SC60A-3049DS is a hold-open dead stop parallel arm assembly. Note that none of those are fusible link arms.
6) What is the closest hold-open arm to the LCN 4010-3049FL if the closer on the door is a Sargent 351 or 281?
The LCN 4010-3049FL fusible link hold-open arm is built for LCN 4010 Series closers and will not mount to a Sargent body. For a Sargent 351 or 281 closer, the Sargent 25-H hold-open arm is the matching part and is made for standard and top jamb mount, and the Sargent 25-CPSH is the hold-open parallel arm version with a compression stop. Both Sargent arms are Grade 1 heavy duty.
7) I need a hold-open arm that also stops the door instead of releasing on heat. What should I use instead of the LCN 4010-3049FL?
The LCN 4010-3049FL holds the door open and drops the hold-open automatically above 165 degrees F through a fusible link, so it does not act as a door stop. If the opening needs the arm to stop the door at a set point, the Falcon SC60A-3049DS is a hold-open dead stop parallel arm assembly, and the Sargent 25-CPSH is a hold-open parallel arm with a compression stop. Both hold the door and limit its swing mechanically rather than releasing on temperature.
8) Is a fusible link hold-open arm allowed on a fire door, or do I need a magnetic hold-open?
A fusible link arm is the mechanical way to hold a door open and have it release on heat, with no power and no detector tie-in. A magnetic hold-open or an electrified closer is what you use when the hold-open has to release from the building fire alarm rather than from local heat. Whichever route you take, confirm the arrangement against the authority having jurisdiction for the opening, since the release method is what they will look at.
9) What finish should I order to match the other closers in my building?
Six finishes are available on the arm: 689 aluminum, 690 statuary bronze, 691 light bronze, 693 gloss black, 695 dark bronze and 696 brass. For a fleet of openings, match the number stamped or specified on the existing closer covers rather than matching by eye, since 690, 691 and 695 all read as bronze from a distance.
10) Is the Falcon SC70A-3049/PA a substitute for the LCN 4010-3049FL hold-open arm?
They serve the same purpose on different closers. The LCN 4010-3049FL is a handed hold-open arm for LCN 4010 Series closers with a fusible link that releases above 165 degrees F. The Falcon SC70A-3049/PA is a hold open arm supplied with a PA bracket for Falcon SC70A Series closers. Match the arm to the closer body you already have on the door.
11) Will a Falcon OHC100A-DP work in place of the LCN 4010-3049FL?
No. The Falcon OHC100A-DP is a center hung floor pivot with an end load arm for Falcon OHC100 Series overhead concealed closers, so it belongs to a center hung pivoted opening. The LCN 4010-3049FL is a surface closer hold-open arm for LCN 4010 Series closers with a 165 degree F fusible link release. They are not interchangeable.
12) Will swapping to the fusible link arm affect ADA compliance on the opening?
The arm is an ADA compliant design for commercial openings. The opening force and closing speed still come from the closer body itself, so adjust the closer to your required force after the arm is installed.
13) What arm should I order for an automatic door operator rather than a manual closer like the LCN 4010 Series?
The LCN 4010-3049FL is a hold-open arm for a manual LCN 4010 Series door closer. For a powered opening, the Falcon 8230-3077PLCM is a standard arm with track for Falcon 8230 Series automatic door operators, part of the 8200 Series. Operator arms are specific to the operator model and do not cross to surface closer arms.
14) Which hold-open arm option does not require me to specify handing?
The LCN 4010-3049FL is a handed arm and is ordered left hand or right hand in finishes including 689 aluminum, 690 statuary bronze, 691 light bronze, 693 gloss black, 695 dark bronze and 696 brass. Among comparable hold-open arms, the Sargent 25-H for 351 and 281 closers and the Sargent 25-CPSH parallel arm with compression stop are catalogued without a hand selection. Verify the closer series on the door before choosing.
15) Can I use this fusible link arm on a home or apartment unit entry door?
It is specified for commercial use. Typical jobs are office buildings, schools, healthcare, retail, warehouses, multi-tenant residential common areas and government buildings, corridor and stair doors where a door needs to stand open but close on heat.
How fast can I get the LCN 4010-3049FL RH 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 LCN 4010-3049FL RH 689 come with a warranty?
Absolutely. The LCN 4010-3049FL RH 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 LCN 4010-3049FL RH 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
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