NBS Source
DC340 Door Closer



  • Suitable for fire and smoke protection doors.
  • Can be used for left and right hand doors.
  • For single action doors up to 1400 mm wide (1100 mm wide for DC 340T).
  • Supplied as standard with closer body, for use with L190 link arm and A154 parallel bracket.
  • ABS satin silver cover finish.
  • Adjustable spring power from CEN grades 2–6.
  • Backcheck as standard.
  • Supplied with integrated concealed mounting plate.
  • Adjustable arm height (2 mm, maximum) for tolerance and ease of installation.
  • Concealed fastening screws on sliding arm.
  • Suitable for left and right hand doors.
  • CE marked in compliance with BS EN 1154.


  • Extensive range of uses for fire doors and standard doors.
  • Modular design allowing change of closer without changing the mounting plate.
  • Template adjustable design meaning a quick and easy install.
  • Reduced closer torque means a door easier to open and close.
  • Backcheck: Variable above 75°.
  • Closing speed: Variable between 0–180°.
  • Latching speed: Variable between 0–15°.


  • Extensive range of uses: Fire and smoke protection doors as well as standard doors.
  • Modern and compact design.
  • Same dimensions and design with or without mounting plate.
  • Comprehensive functions.

Additional information for this product is available from:


General information


Pr_30_36_59_15 Controlled door closersPrimary


P21/12 Overhead door closers

P21/410 Overhead door closers

Product range

Door Controls / ASSA ABLOY Door Closers

Specification data - Controlled door closers

Product Reference

DC340 Door Closer

DC340T Door Closer

With G195 height adjustable slide arm (size 1–4).

Colour/ Finish


Similar to RAL9005.


Similar to RAL8014.



Similar to RAL9016.



Angle bracket A122

Hold open link arm L191

Link arm L190

Mounting plate A120

Parallel arm bracket A154

Standard product features

Size (l x h x d):

308 x 69 x 63 mm.


2.1 kg.

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