The inserts and seals used belong to class 175, which means that high power can be transmitted, even at sustained temperatures. Although the limiting factor is often the cable used, the use of class 175 inserts is fully justified when the connector is used in a bus bar; meaning when the cable is replaced by a metal supply plate. The connector contact is then screwed directly onto that plate. This type of connection enables maximal power transmission.

The use of high power may generate interference, which can adversely affect the performance of the other communication systems found on the vehicles and equipment. This is why SOURIAU offers its shielded Series III interface with an EMI ring as a standard, along with different rear connection types (elbow or straight) enabling optimal grounding. The design of these power connectors is fully modular. The backshells used are removable, so they can be adjusted at the last minute according to the space constraints encountered when wiring them; or the elbow-shaped backshell can be orientated according to the angle of the incoming cable, in order to minimise the residual tension of the cable on the connector.

Finally, these power connectors are available with various platings including RoHS-compliant Zinc Nickel protection, which is withstands at least 500 hours of exposure to salt spray and the 500 mating as stated both in the MIL-DTL-38999. 

The modularity, materials used and standard interface mean that SOURIAU’s power connectors are ideal for a range of applications that require high power and high current transmission. Today these include electric and hybrid cars, which need high power for battery charging, but also defense applications, particularly for power distribution units (PDUs) in ground vehicles where there is a proliferation of on-board electronic and electric equipment. Applications are also found in commercial aerospace for auxiliary power units (APUs) near the engine blocks, or further downstream for electrical distribution between equipments.