Motor Connection with Han-Drive®

Motor interface housing with Han E10 connector

Modular designs are being used more and more in mechanical engineering. Functional units are preassembled and later assembled on site. However, the individual modules have to make up a functioning unit when assembled. This applies both to mechanical attachment and to electrical connection.


Within the concept of standardisation and decentralisation of installation technology for machine tools (DESINA) the interface with the motor is of major importance. Standardised termination is essential to ensure systematic decentralisation. The individual components must be prepared for fast, reliable installation. Servicing also has to be taken into account because the repair work has to be performed within a minimum space of time.

User-friendly modularity

Possible combinations of Han-Drive

The universal solution from HARTING is called Han-Drive®. With this newly developed series of connectors, electric motors are prepared for fast, reliable installation. The motor terminal box is replaced by a specially developed motor interface housing (fig. 1). The installation dimensions for the connector insert are such that standard and modular inserts can both be used. The possible combinations are shown in tables 1 and 2. In developing the Han-Drive® series a contact assignment was defined in collaboration with various motor manufacturers and a number of customers (figs. 2 and 3). The idea is to achieve standardization for everyone's benefit.

Contact with double termination


For an application-friendly solution not only the motor termination itself is of importance but also optimum configuration of cable termination technique. It must be compact, reliable and efficient, these being elementary features of the new HARTING product series Han® ESS for the cable end.


Han® ESS is the counterpart to the Han® ES insert, a connector with one cage clamp per contact. With the Han® ESS the user has two cage clamp terminals available per contact so two wires can be connected up to each mating face contact. Each wire has its own terminal. Star (fig. 2) or delta bridges (fig. 3) in the counterpart can be implemented by inserting simple wire bridges. Also the necessary connections for the parallel circuit of the motor brake are easy to realise without detaching the motor connection wire. If the motors are subjected to prior testing during manufacture commissioning can take place without the need for an electrician. The motor is correctly connected when the cable connector has been inserted.

Easily replaced

  • Standardised termination
  • Less assembly time
  • Increased availability
  • Less stock of spare parts
  • Less work for maintenance staff