3934 Series - Door Closers

Briton Fire Door Closers | 3934 Series - Door Closers | Electro HO/Free Swing


Briton 3934 series door closers are premium fire door closers designed for commercial use. These electromagnetic hold-open door closers ensure safety and convenience while complying with essential standards. When installing fire door closers to meet regulations in school and hospital corridors, the Briton 3934 series provides a well-engineered soft door closer that is simple to fit and ideal for care homes and educational establishments.

Ideal for medium and heavy-duty installations, Briton door closers in this range are especially suitable for environments prioritising fire and smoke protection. By selecting a Briton 3934 series door closer, you guarantee long-lasting performance and peace of mind, supported by a 10-year warranty (Mechanical). If you need a reliable door closer for fire doors, the 3934 series from Briton is the best choice.

Briton 3934 Series Door Closers - Data Sheet

Door Closer Adjustment - How to adjust a door closer (Click the Link for Briton Door Closer Adjustment)

4  Products

  • Frequently Asked Questions | FAQs

    BRITON 3934 SERIES DOOR CLOSERS

    Frequently Asked Questions

    I can't get any latch action adjustment on my Briton 3934 electromagnetic hold-open door closer. What's causing this?
    		This indicates that the arm has not been pre-tensioned during installation. Refer to the instruction sheets available on our website: Catalogues & Data Sheets.
    What is the minimum strength closer for use on a fire door, and does the Briton 3934 provide this?
    		Yes. All door closers fitted on fire-rated doors must deliver at least power size 3, meaning a closing torque of 18Nm at a point between 0° and 4°
    What voltage is the Briton 3934 electromagnetic door closer?
    		24 Volts DC – plus, or minus 10% Anything over 26 Volts DC may cause damage to the solenoid.
    What is the maximum cable run for a Briton 3934 series electromagnetic door closer?
    		A qualified electrician should calculate this, which depends on wire gauge, ambient temperatures, etc. We can offer general advice, but the installers must perform the final calculation.
    What is the maximum opening angle provided by a Briton 3934 door closer?
    		The manufacturer advises that the maximum opening angle is 180° in applications 1 and 61. This is reduced to 170° in application 66.
    My Briton 3934 door closer is hitting the adjacent wall when opened back to 90°. Can I move it away from the hinge to solve the problem?
    		No, it's tested and approved in the position specified on the fixing instruction. Consider mounting the door closer on the push side application.
    Do you offer an electromagnetic door closer or holder that can operate on AC alternating current?
    		All Briton electromagnetic hold-open door closers operate on 24-Volts DC direct current. The Briton 503 door holder can operate on 230 Volts AC.