Electrified Vehicle Related Products

New Technologies Used in Electric and Hybrid Vehicles

Sumitomo Electric Wiring Systems is aggressively working on developing technologies that are environmentally friendly. One manifestation of this can be seen in our products for electric and hybrid vehicles. We offer a line of original products to meet our customers’ needs.


An EV (Electric Vehicle) is an “electrically-powered vehicle” driven solely by an electric motor.

An HEV (Hybrid Electric Vehicle) is a car that is powered by an internal combustion engine as well as an electric motor. It is also called a “hybrid vehicle”.

A PHEV (Plug-In Hybrid Electric Vehicle) is a hybrid vehicle whose battery can be charged by plugging into a home or another available power supply.

Pipe Harnesses for Hybrid Vehicles

Pipe harnesses for hybrid vehicles must be resistant to the high temperatures and electromagnetic noise produced with high voltages and electric currents. Along with solutions to these technical challenges, we are also developing features that protect the harnesses from various forms of shock.

Motor Cables for Hybrid Vehicles

This high-voltage cable connects the inverter with the motor. It is designed to withstand voltages exceeding 200 volts as well as currents far higher than seen in gasoline-powered vehicles.

Junction Box for High Voltage

This product centralizes the junctions for circuits sending high-voltage, high-current power to the hybrid vehicle’s systems and places them all in one box. While functioning as a central connection for these circuits, it also includes relays, current sensors, and other related components.

Technology drives the future

The evolution of the automobile today has transformed it into a highly technical array of systems and components that are designed to add safety, comfort, fuel economy, luxury, and convenience to the driving experience. SEWS develops and delivers intelligent products for today’s intelligent automobiles through our advanced product development process.