Scharfenberg coupler

Scharfenberg coupler on a DUEWAG GT6-70D/N low floor tram. Note the partially worn off Schaku logo on the right.

The Scharfenberg coupler[1] (German: Scharfenbergkupplung, abbreviated Schaku) is a commonly used type of fully automatic railway coupling.

Designed in 1903 by Karl Scharfenberg in Königsberg, Germany (today Kaliningrad, Russia), the coupler has gradually spread from transit trains to regular passenger service trains, although outside Europe its use is generally restricted to mass transit systems. The Schaku is superior in many ways to the AAR (Janney/knuckle) coupler because it also automates electrical and pneumatic connections and disconnections. However, there is no standard for the placement of these electro-pneumatic connections. Some rail operators have placed them on the sides while others have placed them either below or above the mechanical portion of the coupler.[dubiousdiscuss]

  1. ^ us.voithturbo.com: Scharfenberg coupler

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