XT90-S Spark-Resistant Wiring Harness Assembly

The XT90-S is one of those connectors that shows up in builds where getting the connection wrong actually costs something — a LiPo pack, an ESC, or a flight controller that doesn't survive the spark on hot-plug. The "-S" variant adds an internal resistor that bleeds down the inrush current before the main contact closes, which is why it became the standard in FPV racing frames and high-draw RC platforms before spreading into solar storage and EV auxiliary systems.

 

At Suyi Electronics, we've been manufacturing XT90-S anti-spark connector harnesses as both stock assemblies and fully custom wire harnesses since 2015. The harnesses you see here are built to order — conductor gauge, cable length, insulation type, and termination on the bare end are all parameters we set before the first unit goes into production. That's not a marketing position; it's how the factory is structured. We run OEM and ODM programs out of a 1,500 m² facility in Chang'an Town, Dongguan, with 11 years of export experience 。

 

Our production holds CCC, SAA, UL, and VDE certifications. On a high-current assembly like this one — where wire gauge and solder joint integrity directly affect how the connector performs at 90A continuous — the material traceability those certifications require is what separates a reliable batch from one that fails in the field six months later.

Parameter	Specification
Connector Model	XT90-S (Anti-Spark)
Rated Current	90A continuous / 120A peak
Rated Voltage	Up to 60V DC
Conductor	Multi-strand tinned copper
Insulation	High-strand silicone or PVC (specify at order)
Operating Temp	–40°C to +200°C (silicone) / –20°C to +80°C (PVC)
Connector Housing	High-temp nylon PA66, yellow
Contact Plating	Gold-plated copper
Standard Length	100mm (custom lengths accepted)