A modular plug connector for traction technology combines up to 15 single-pole power contacts

Paul Boughton

The Multi-Contact Modular Power Connector (MPC) has been developed for the transmission of power in the electric propulsion system of rail vehicles. It has an outstanding advantage in as much as its modular design allows the assembly of application-specific plug connectors with standard modules. Its integration into the design of the vehicle is facilitated by its fixed installation dimensions with the possibility of combining different components. The costs of logistics, stock-keeping and maintenance are reduced.
The individual MPC modules can be connected side by side and can also be stacked vertically. Various insulators, all of which are compatible, are available for a range of contact diameters and cable cross-sections from 10 to 240 mm². Up to 15 modules can be grouped together, and it is even possible to combine male and female connectors. Instead of a number of single-pole units, only one modular plug connector is now connected.
An MPC coupler consists of a fixed and a mobile part. For the fixed part, either a linear plug connector is secured in place by means of existing fixing holes, or a panel receptacle is mounted in a panel. By offering a choice of linear or right-angled modules, the mobile plug connector can be adapted to a wide range of installation situations. With the use of right-angled modules it is possible to create very compact plug connectors.
The combination of linear plug connectors gives very flat couplings which are particularly suited, for instance, for under-floor mounting. A metal cover protects them from mechanical damage due to impacts from objects such as flying stones.
In rail vehicles the MPC is used to make electrical contact with the transformer, the traction motor or inverters and batteries, and to provide a power connection between the wagons. With rated values of 3600 V and up to 700 A it is suitable for many other industrial high-current and high-voltage applications.

The robust connector with protection class IP67 in the mated state is designed for demanding applications with more than 500 mating cycles. Developed for the rugged conditions of railway applications, the MPC is vibration- and shock-tested in accordance with DIN EN 613731) and corrosion-resistant (240 h salt spray test in accordance with EN 60068-2-112)). Optional coding prevents accidental pole reversal. MC Multilams ensure an efficient energy transfer with constant contact force and low transmission resistances. As a result of the self-cleaning effect, the connection is reliable and requires little maintenance.
For more information, visit www.multi-contact.com

Recent Issues