Fusible Link Door Closer

The 4010 series can be templated for 100 or 140.

Fusible link door closer.

Style 1 5 links are for use on fire doors windows and lids. Suitable for interior door widths 54 to 60. The fusible link is a lead clip that melts at roughly 115 degrees and releases the door so it can close and contain a fire. Lcn door closer fusible links.

4116fl heavy duty door closer with fusible link arm. The 4110 and the 4020 series can be templated for 100 140 or 180. Suitable for exterior door widths 42 to 48. Fusible link closer arms incorporate a link made from pieces of metal held together by solder that is designed to melt when it reaches a certain temperature releasing the hold open and allowing the door closer to close the door.

The second on our list of lcn fusible link closers is the lcn door closer 4020 fl. Closer mounts parallel arm specify right or left swinging door. 4 7 4 3 where fusible links are used one fusible link shall be located near the top of the opening and. Fusible link is not recognized by nfpa therefore norton does not offer this type arm.

4020fl add to cart add to compare lcn 4010 fusible link door closer. Style 9 links are good for range hood applications. Style 6 and 7 links are often used on fire doors windows hatches dampers and blowers. The automatic closing device is a device that causes the door to close when activated by a fusible link or detector.

Double heat treated steel pinion. 4110fl add to cart add to compare lcn 4020 fusible link door closer 385 00. Style 8 links are commonly used on fire doors smoke and heat vents and ducts. This will close the door but note that the door can still be closed manually when necessary.

The fusible link arm is available with the 4010 4020 and 4110 series closers. Tested over ten million cycles. Nortonuses two types of mechanical hold open. The lcn fusible link arm that is included with the 4010 fl closer has a link that will melt at 120 degrees.

A fusible link is heat activated meaning it must be exposed to fire before it can melt and release the fire door to close. The heat from a fire will melt the fusible link which releases the spring loaded clamp assembly relieving pressure on the friction joint and permitting the door closer to close the door. They all use the same fusible link arm. Use links in straight pull applications only.

Lcn 4110 fusible link door closer 385 00. If you have a building were you have a high traffic and abusive especially exterior doors then this is the closer. The ul listing number is for the fusible link arms is r1943. The 4020 fl closer has the same color and hand options as the 4010 fl and will be shipped with the same parts.

Although nfpa does allow fusible links they are not the most effective and reliable method to ensure your fire doors close in case of a fire.