How Kadee® Couplers Work

When the Kadee® Company was formed it was with the idea of providing "the best of what was most needed" ...a reliable, realistic, automatic coupler. It was no coincidence that the name Kadee® became synonymous with the finest automatic couplers! Since 1947 Kadee® has remained a leader within the hobby, always improving the quality of our products. The earliest version, the "K" series knuckle coupler was the first to combine a realistic looking coupler with a "non-lockout" feature; thus the coupler was never "locked" in a closed position, but was designed to allow another coupler to mate with it at all times. A major achievement! Simply nudge cars together and the cars are coupled.Although a big stride forward, the "K" still required physical contact with an uncoupling device, between the rails, to uncouple. This was quite conventional for its day but not the most satisfactory arrangement. The next logical step was to eliminate the physical contact with uncoupling ramps.The introduction of Magne-Matic® Uncoupling by Kadee® was a major breakthrough utilizing magnetic force to activate the coupler. With our "MK" series, the letter "M" was added to indicate a "K" style coupler operated magnetically. Hard on the heels of this important breakthrough, Kadee® introduced modifications providing Delayed Magnetic Uncoupling®. Now it was possible to spot cars at any desired location on any track beyond a magnetic uncoupler.

Coupler Evolution
Coupler Evolution

For Automatic Coupling: Nudge cars together.

Delayed Magnetic Uncoupling®: "Delayed Magnetic Uncoupling®" is a unique way of dropping a car, or cars, at any number of locations, (1 through 16 in illistration below), using only one magnetic uncoupler, (A). The Delayed Uncoupler, (A), is mounted just ahead of the leading turnout (switch) in any track serving a number of spurs and sidings where cars can be dropped.

Delay Animation

1. Stop with the couplers over an uncoupler and back up slightly with the couplers still over the uncoupler, allowing slack to occur between couplers.
2. Pull forward bringing coupler off the uncoupler. Couplers will snap to the delayed position.
3. Back up, pushing the car(s) to the desired location. Do not permit slack to develop between couplers.
4. Pull forward, leaving the car(s) where desired. Couplers will automatically return to normal coupling position.

Use one of our delayed HO uncouplers: #321 Between The Rails, #322 Between The Rails, #308 Under The Track or #309 Electric Uncoupler.

More information: For a more detailed introduction and general information about Kadee® Couplers from HOn3 to G please see our Catalog.

Manufactured and Assembled entirely in the U.S.A.

WARNING WARNING: Cancer and Reproductive Harm -

WARNING WARNING: CHOKING HAZARD - Small Parts - Not for children under 14 years.

Kadee Quality Products Co. products are not toys and are not intended for children under 14 years old.