T-Motor AT40A 40A 2–4S Fixed Wing ESC with 5V 3A BEC

Powerful 40A ESC for RC airplanes and FPV platforms

The T-Motor AT40A is a high-performance ESC designed for fixed-wing aircraft and light FPV models using 2–4S LiPo batteries. It provides stable 40A output, strong protection features and a reliable 5V/3A linear BEC for powering receivers and servos. AT40A ensures smooth throttle response and supports multiple programmable parameters for refined tuning.

Key features

• • Supports 2–4S LiPo
• • Continuous current 40A, burst up to 55A
• • Integrated 5V 3A linear BEC
• • Fast and stable throttle response
• • Protection: undervoltage, over-current, ESC thermal, signal loss
• • Programmable brake, timing and startup modes
• • JST battery connector

Technical specifications

• • Model: T-Motor AT40A
• • Continuous current: 40A
• • Burst current (≤10s): 55A
• • Battery support: 2–4S LiPo
• • BEC: 5V 3A (linear)
• • Brake mode: programmable
• • Startup: normal / soft / super-soft
• • Timing: low / medium / high
• • Size: 68 × 25 × 12 mm
• • Weight: approx. 37 g
• • Battery connector: JST

In the box

• • 1 × T-Motor AT40A 40A 2–4S ESC
• • Manufacturer documentation