ASSA ABLOY DC300 Door Closer EN 3-6 Black Body Only Up to 120kg 1400mm EN 1154

Product Overview

Assa Abloy DC300 is a door closer body certified to EN 1154, featuring continuously adjustable closing force (EN 3-6) for use on interior or fire and smoke-rated doors. Intended for commercial and public buildings, it supports door leaves up to 120 kg and 1400 mm wide, and can be installed on either the door or frame, hinge side or opposite, on both left- and right-handed doors.

A standout feature is its integrated thermodynamic valves, which ensure consistent performance across seasonal temperature variations and eliminate the need for routine re-adjustment. This advantage minimizes maintenance risk for facility managers and installers managing large properties. Suited for specification in high-traffic environments, especially where compliance and long-term reliability are procurement priorities.

Key Features

• EN 1154 certified ? meets European safety and performance standards for door closers


• Continuously adjustable closing force EN 3-6 ? accommodates doors up to 120 kg and 1400 mm wide


• Thermodynamic valves ? stable settings and performance without seasonal adjustment


• Back-check function ? adjustable by valve, protects against forceful opening from 75° onward


• Closing and latching speed valves ? independent adjustment for 180°?0° and 15°?0° phases


• Mounts on hinge or opposite side ? flexible installation on door leaf or frame


• Height-adjustable arm axis 0?14 mm ? adapts to various door/frame tolerances

Technical Specifications

• Certification: EN 1154


• Closing Force: EN 3-6 (valve adjustable)


• Maximum Door Width: 1400 mm


• Maximum Door Weight: 120 kg


• Maximum Opening Angle: 180° (EN 5 force: 125°)


• Valve Adjustment Ranges: 180°?0° (valve 1), 15°?0° (valve 2)


• Back-check: Adjustable, acts from 75°


• Height Adjustment Range: 0?14 mm (arm axis)


• Handing: Left or right doors


• Mounting: Door or frame, hinge or opposite side


• Color: Black

Applications

Specified for use in commercial, public, and institutional doors including fire and smoke-control doors. Suitable for high-traffic building entrances, offices, hospitals, schools, and multi-residential blocks. Compliant with EN 1154 for fire-proof and smoke-tight assemblies. Applicable where seasonal maintenance reduction and flexible mounting are valued, including refurbishment and OEM procurement.

Packaging & Shipping

Standard export packaging. Unit includes door closer body and installation accessories; arm sold separately.