6400-18 Mounting Plate

LCN 6400 COMPACT Series (Model 6440) is a modular low-energy automatic door operator. The 6440 motor gearbox assembly mounts onto a standard LCN 4040XP (or 4041) mechanical door closer, driving the closer's pinion to automatically open free-swinging interior doors without requiring removal/replacement of existing closer hardware. It is powered by a supplied 24VDC wall adapter/power supply and can be actuated by wired or wireless (battery) actuators, including touchless actuators, via a 9-position terminal block (24V IN, GND, 24V OUT, COMMON x3, ACTUATE, ENABLE SW, FIRE). It is ANSI/BHMA A156.19 listed, UL325/UL10C/FCC certified, and capable of meeting ADA requirements.

Product specifications

Power input	2.0A @ 24VDC via supplied wall adapter/power supply; if using a different power supply, voltage must be regulated to +/-10%
Power output	75mA @ 24VDC (for powering an optional wireless receiver)
Door weight	up to 185 lb
Door width	36 inch
Max powered opening	70 deg to 110 deg
Certifications	ADA, BHMA A156.19, UL 325, UL 10C, FCC
Warranty	2 years
Low-voltage wiring	Required
AWG	20 AWG minimum for runs up to 50 ft one-way; 18 AWG minimum for runs up to 80 ft one-way (for user-provided low-voltage wiring to the 6440 terminal block)
Basis	Refer to chart below if using user-provided wiring: Distance (one-way) [ft] / Minimum Wire Gauge (AWG) — 50 / 20, 80 / 18 (LCN COMPACT Automatic Operator Series 6400 Model 6440 Installation Instructions, doc 47373709, Rev. 11/22-c, Pre-Installation Checklist step 2). Terminal block is low-voltage: '24V IN / GND / 24V OUT / COMMON / ACTUATE / COMMON / COMMON / ENABLE SW / FIRE', powered by 'Power Input 2.0A @ 24VDC (Supplied Adapter)'.

Official manufacturer documents

• LCN COMPACT Automatic Operator Series 6400 Model 6440 Installation Instructions (47373709) (verified 2026-07-22)