Name: LCN 4110-3049FL Fusible Link Arm with 165°F Temperature Release
Brand: LCN
SKU: 4110-3049FL RH 689
Price: 280.96 USD
Availability: InStock

Product Overview
FAQs

LCN 4110 Series Fusible Link Arm with 165°F Temperature Release

Fire Safety Door Closer Accessory

The LCN 4110 Series Fusible Link Arm is a critical fire safety component designed to automatically release the hold-open function when exposed to temperatures above 165°F. This handed replacement part integrates with LCN 4110 Series door closers to provide reliable fire safety compliance in commercial applications. The fusible link mechanism ensures doors automatically close during fire emergencies while allowing normal hold-open operation under standard conditions.

Professional Features & Benefits

Temperature-Activated Release: Automatically releases hold-open function when exposed to temperatures above 165°F for critical fire safety protection.
Adjustable Shoe Design: Hold-open function is adjustable at the shoe for precise positioning and reliable operation.
Handed Configuration: Available in handed versions to match specific door installation requirements and ensure proper operation.
4110 Series Compatibility: Designed specifically for LCN 4110 Series door closers for seamless integration and reliable performance.
Commercial-Grade Construction: Built to withstand demanding commercial applications with consistent fire safety performance.
ADA Compliant Design: Meets ADA requirements for accessible door operation in commercial facilities.
Parallel Arm Mounting: Configured for parallel arm door closer installations for optimal door control and fire safety function.

Technical Specifications

ADA Compliant: Yes
Commercial/Residential: Commercial
Department: Door Hardware
Mounting Method: Parallel Arm
Parts and Accessories Type: Replacement Parts
Product Attribute: Parts and Accessories
Product Category: Door Controls
Product Group: Door Controls
Product Model: 4110-3049FL
Product Subgroup: Parts and Accessories
Product Type: Arm
Series: 4110 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 door closer components deliver professional-grade reliability with precision-engineered fusible link technology rated for consistent 165°F activation. ADA compliant design ensures accessibility compliance while maintaining critical fire safety performance. Engineered for demanding commercial applications where dependable fire safety operation is essential.

Manufacturer Resources

LCN Full Line Catalog

Product Specs

Series:: 4110 Series
Subcategory:: Parts and Accessories
Product Group:: Door Controls
Product Subgroup:: Parts and Accessories
Product Type:: Door Closer Arms
Commercial/Residential:: Commercial
ADA Compliant:: Yes
Parts and Accessories Type:: Replacement Parts
Product Attribute:: Parts and Accessories
Product Model:: 4110-3049FL
Mounting Method:: Parallel Arm
Product Category:: Door Controls
Department:: Door Hardware

LCN 4110-3049FL RH 689 – Frequently Asked Questions

1) Do I have to order the LCN 4110-3049FL fusible link arm handed, and how do I know which hand I need?

Handing matters on this one. The 4110-3049FL fusible link arm comes left hand or right hand, and the two are not interchangeable, so the hand of the door has to be settled before the order goes in. Both hands are offered in the same six finishes: 689 aluminum, 690 statuary bronze, 691 light bronze, 693 gloss black, 695 dark bronze, and 696 brass.

2) Will the 4110-3049FL arm fit my LCN closer if it is mounted on the pull side of the door?

No. The 3049FL is a parallel arm assembly, which means it mounts on the push side of the opening with the closer body on the door and the shoe on the frame soffit. A regular arm (pull side) or top jamb installation needs a different arm. If the LCN 4110 body on the job is set up regular arm, changing to this arm means changing the mounting.

3) What does the 165 degree fusible link on an LCN 4110 arm actually do when there is a fire?

The arm holds the door open at the position you set at the shoe under normal use. When air temperature at the arm passes 165 degrees F, the fusible link separates and the hold-open drops out, so the closer swings the door shut and the opening self-closes. It is a mechanical release, so it works whether or not the building has power or a fire alarm interface.

4) I need doors to hold open and close on the fire alarm. Is a fusible link arm the right choice, or do I need an electrified hold-open?

A fusible link arm like the 4110-3049FL releases on heat at the door itself, above 165 degrees F. It does not talk to the fire alarm panel, so the door stays open until the fire is close enough to heat the link. If the spec calls for hold-opens that release on a smoke detector or on a general alarm signal, you want an electromagnetic hold-open or a closer/holder, not this arm. Fusible link is the answer where you want hold-open with a mechanical heat release and no wiring.

5) Is the 4110-3049FL a whole door closer or just the arm?

Just the arm. The 3049FL is a replacement arm assembly for an LCN 4110 Series closer, so it presumes the closer body is already on the door and in good order. If the closer itself is leaking or worn out, replacing the arm alone will not fix it. Buying a complete closer with a parallel arm is a different order, for example the Sargent 1431-CPS TB EN heavy duty surface closer with parallel arm.

6) What is the closest hold-open parallel arm to the LCN 4110-3049FL if the closer on the door is a Falcon SC60A?

Stay within the Falcon family and use the Falcon SC60A-3049DS hold-open dead stop parallel arm assembly. The LCN 4110-3049FL is built specifically for LCN 4110 Series closers and mounts parallel arm, so it will not carry over to an SC60A body. The SC60A-3049DS is the SC60A Series hold-open parallel arm, and its dead stop feature builds the stop into the arm assembly itself rather than relying on a separate overhead stop. Note the LCN part adds a 165 degree F fusible link that drops the hold-open on heat rise, which the dead stop arm does not do - if the opening is a fire door that needs heat-actuated release, the fusible link arm is the one that does that job.

7) Can a Sargent 25-H hold-open arm replace an LCN fusible link arm on a 4110 closer?

No. The Sargent 25-H is a hold-open door closer arm for Sargent 351 and 281 closers in standard and top jamb mount, so it is cut for a different closer body and a different mounting position. The LCN 4110-3049FL is a parallel arm part for LCN 4110 Series closers. Two differences matter beyond the brand: the 25-H mounts standard or top jamb where the 4110-3049FL mounts parallel arm, and the LCN arm carries a 165 degree F fusible link that releases hold-open on temperature rise, which is a separate function from mechanical hold-open alone.

8) Which of these arms looks like a substitute for the LCN 4110-3049FL but is not?

Two are easy to mistake. The Falcon 8230-3077PLCM is a standard arm with track for 8230 Series automatic door operators - a track arm on a powered operator, not a hold-open arm on a manual surface closer. The Falcon OHC100A-DP is a center hung floor pivot with end load arm for OHC100 Series closers, which is a floor-closer pivot arrangement rather than a surface parallel arm part. The LCN 4110-3049FL is a parallel arm mount replacement arm for LCN 4110 Series surface closers, so neither of those two shares its mounting or its closer body.

9) Can I set where the door holds open, or is the hold-open angle fixed?

Adjustable. The hold-open is set at the shoe, so a maintenance tech can dial in the hold position on site rather than living with a fixed angle. That matters on openings where a wall, a corner, or traffic flow limits how far the leaf can stand open.

10) I need a hold-open parallel arm with a built-in stop rather than a fusible link - what are the options?

Two peer arms handle that. The Sargent 25-CPSH is a heavy duty hold-open parallel arm with compression stop for Sargent 351 and 281 closers, and the Falcon SC60A-3049DS is a hold-open dead stop parallel arm assembly for SC60A Series closers. Both give you hold-open plus a stop in one arm, but the stop is mechanical - the door stays held open until someone pulls it. The LCN 4110-3049FL instead ties hold-open to a 165 degree F fusible link so the door releases itself on heat. Pick by closer body: the 25-CPSH follows the Sargent closers, the SC60A-3049DS follows the Falcon SC60A, and the 4110-3049FL follows an LCN 4110.

11) Is the Falcon SC70A-3049/PA the same kind of part as the LCN 4110-3049FL?

They are the same class of part - a hold-open parallel arm for a surface closer - but they are not interchangeable. The Falcon SC70A-3049/PA is a hold open arm supplied with a PA bracket for SC70A Series closers, so the parallel arm bracket comes with the assembly. The LCN 4110-3049FL is the handed fusible link arm for LCN 4110 Series closers, with hold-open adjustable at the shoe and a 165 degree F release. Order the SC70A-3049/PA when the closer body on the door is an SC70A; order the 4110-3049FL when it is an LCN 4110 and the opening needs the heat-actuated release.

12) Is this LCN arm suitable for a hospital or school corridor door, or is it a residential part?

Commercial. The 4110-3049FL is a commercial door hardware component, and the ADA compliant designation means it can be used on accessible openings without breaking the accessibility requirement for the door. It is the kind of arm that goes on corridor and cross-corridor doors in healthcare, education, offices, and government buildings where a door needs to stand open day to day but close on heat.

13) For a school corridor where I am standardizing hold-open arms, do I have to match handing the way the LCN 4110-3049FL requires?

With the LCN 4110-3049FL you do - it is a handed part, stocked left hand and right hand across finishes including 689 aluminum, 690 statuary bronze, 691 light bronze, 693 gloss black, 695 dark bronze, and 696 brass, so each opening is ordered to its own hand. Among the peer arms, the Sargent 25-CPSH heavy-duty hold-open parallel arm with compression stop and the Falcon SC60A-3049DS hold-open dead stop parallel arm assembly are the corresponding hold-open parallel arms for Sargent 351/281 and Falcon SC60A closers respectively. Standardize on whichever closer body already dominates the corridor, then order the arm that belongs to it.

How fast can I get the LCN 4110-3049FL 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 4110-3049FL RH 689 come with a warranty?

Absolutely. The LCN 4110-3049FL 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 4110-3049FL 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

Why buy the LCN 4110-3049FL RH 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.

LCN 4110-3049FL Fusible Link Arm with 165°F Temperature Release

Write a Review

LCN