High Voltage Wire Harness: Empowering the Future of Electric Mobility
Ultimate Safety, Precision, and Durability Certified for Next-Generation xEV Vehicles
With the global automotive transformation toward clean energy and electrification, high voltage electrical distribution systems have become the core backbone of propulsion. Thai Summit Harness Public Company Limited leverages over three decades of automotive harness engineering excellence to research, develop, and manufacture advanced High Voltage Wire Harnesses (HV Harnesses) for all electric vehicle architectures, including Hybrid Electric Vehicles (HEV), Plug-in Hybrids (PHEV), and Battery Electric Vehicles (BEV).
Key Role in Electric Powertrain Architecture (xEV Applications)
Characterized by international-standard high-visibility safety orange insulation, our high voltage harnesses deliver high-current and high-voltage power between critical EV modules:
- Traction Battery to Inverter / PDU: Connecting high-capacity battery packs to the inverter and Power Distribution Unit.
- Inverter to Electric Motor (e-Axle): Delivering multi-phase AC power to traction motors for smooth wheel propulsion.
- On-Board Charger (OBC) & DC-DC Converter: Routing incoming charging current to battery packs and stepping down voltage for 12V auxiliary vehicle systems.
- Fast Charging Inlet (DC & AC Inlets): Transmitting high-speed direct current from external fast chargers to vehicle energy storage systems.
- Electric A/C Compressor & High Voltage PTC Heater: Providing reliable high voltage power to thermal management components.
Engineering Excellence & Highest Safety Standards
Operating under hundreds to near one thousand volts (400V - 800V+) with massive electrical currents, our high voltage systems are engineered for uncompromising safety:
- Superior EMC / EMI Shielding: Robust braided copper mesh and aluminum foil shielding prevent electromagnetic disturbances to sensitive ADAS radar, cameras, ECUs, and communication buses.
- High Voltage Interlock Loop (HVIL): Integrated safety loop instantly shuts down high-voltage power within milliseconds if a connector is disconnected or damaged, protecting passengers and technicians.
- High Dielectric & Thermal Resistance: Premium cross-linked polymers and silicones withstand extreme temperatures, coolant fluids, and high-voltage surge transients.
- Lightweighting & Thermal Management: Comprehensive ampacity and thermal heat dissipation analysis, with application of automotive-grade aluminum conductors to maximize electric vehicle driving range.
Rigorous Laboratory Validation & International Standards
Certified under IATF 16949, every high voltage harness undergoes rigorous validation in our accredited test facilities: 100% Withstand Voltage & Insulation Resistance Testing, Thermal Shock Cycling, IP67 / IP6K9K High-Pressure Ingress Testing, and X-ray Crimp Cross-Section Inspection.
Thai Summit Harness Public Company Limited
"Satisfy Customers with our Products and our Professionalism"