Amass XT90-S Anti-Spark Male Connector

The genuine Amass XT90-S anti-spark male connector is engineered for high-voltage drone builds, including 6S–12S heavy-lift cinelifters, X-Class racers, and agricultural UAVs. By incorporating a patented 5.6-ohm resistor inside the positive contact pin, this connector absorbs the initial inrush current during battery connection, eliminating the loud spark and contact erosion common when plugging in high-voltage LiPo packs.

Key features

• Built-in anti-spark protection: A two-stage contact mechanism uses an integrated 5.6-ohm resistor to pre-charge ESC capacitors before full engagement, protecting your electronics and extending plug lifespan.
• High-current capacity: Rated for 40 A continuous and up to 90 A instantaneous current, delivering reliable power transfer for heavy payloads and high-draw motor setups.
• Gold-plated brass contacts: Ultra-low contact resistance (approximately 0.30 mΩ) minimises voltage drop and reduces heat generation under sustained heavy loads.
• Snap-on insulating shroud: Includes a grey tail cap that clips securely over the solder cups, eliminating the need for heat shrink tubing while providing clean mechanical strain relief.
• High-temperature nylon housing: Constructed from flame-retardant PA66 material that withstands operating temperatures up to 120°C without melting or deforming during soldering.

Specifications

• Connector type: XT90-S Male (ESC / Power Lead side)
• Continuous / Peak current: 40 A / 90 A
• Recommended wire gauge: 10 AWG to 12 AWG
• Contact resistance: 0.30 mΩ
• Metal material: Gold-plated brass
• Insulation material: PA66 Nylon
• Temperature rating: -20°C to +120°C

Designed specifically for the ESC or power distribution board side of your wiring, the XT90-S male plug mates seamlessly with both standard XT90 and XT90-S female battery connectors. Use a high-wattage soldering iron with 10–12 AWG silicone wire to ensure solid, low-resistance joints inside the half-open solder cups.