T-Motor F55A PRO III 8S 4IN1 AM32 ESC
The T-Motor F55A PRO III 8S 4IN1 AM32 ESC Delivers Reliable High-Current Power
The T-Motor F55A PRO III 8S 4IN1 AM32 ESC packs four 55A-continuous (65A burst) ESCs built around TPHR8504 MOSFETs and an STM32G071 microcontroller onto a single 4-in-1 board, running open-source AM32 firmware for direct configurability. Rated for 3S–8S LiPo power, it adds TVS protection against voltage spikes, a wide 16–128kHz PWM frequency range for fine motor tuning, and a heat sink designed to spread heat evenly across the board during sustained high-power flights.
Built to Handle High-Intensity Flights
TVS protection guards the board against voltage spikes, and the ESC is built from imported materials chosen for resilience during high-intensity flights. Combined with the TPHR8504 MOSFETs and STM32G071 microcontroller, stability stays exceptionally high even under sustained high-current draws from an 8S pack.
A Heat Sink That Spreads Heat Evenly and Keeps Up
A heat sink designed to spread heat evenly across the board dissipates it more efficiently than a design without it, helping the ESC hold a stable power output through long, high-current 8S flights. A wide 16–128 kHz PWM frequency range lets it be tuned to match a given motor's own parameters.
T-Motor F55A PRO III 8S 4IN1 AM32 ESC Key Features
TVS Protection
Even Heat Spreading
Direct Plug-In F7 Pro FC
High Stability, Long Lifespan
Frequently asked questions - T-Motor F55A PRO III 8S 4IN1 AM32 ESC
It ships with open-source AM32 firmware, not BLHeli32. AM32 is actively developed and configurable through the same BLHeli-style configurator tools most flight controller software already supports.
No. This ESC has no built-in BEC, so the flight controller and any video/RC receiver need their own 5V supply, typically from the flight controller itself.
Yes. Motor wires and the main battery power leads need to be soldered directly to the ESC's pads, so comfort with soldering and reading a wiring diagram is expected. An incorrect connection or exceeding the rated voltage/current can damage the board and is not covered by warranty.
It's designed for direct plug-in use with T-Motor's F7 Pro flight controller using the included single-head cable, and is also plug-and-play with F7 and F7 HD flight controllers via the included double-ended cable. Any other 30.5 × 30.5 mm-mount flight controller can be wired to it as well.
T-Motor F55A PRO III 8S 4IN1 AM32 ESC Specification
Model | F55A PRO III |
MOSFETs | TPHR8504 |
Microcontroller | STM32G071 |
Firmware | AM32 |
Continuous Current | 4 x 55A |
Burst Current | 4 x 65A (10 seconds) |
Input Voltage | 3S–8S LiPo |
BEC | No |
Telemetry | Support |
Current Sensor | 200A amperage meter |
PWM Frequency Range | 16–128 kHz |
Protocol Support | DSHOT150 / 300 / 600 / 1200 |
Protection | TVS voltage-spike protection |
Heat Sink | Heat sink designed for even heat spreading |
Mounting Hole | 30.5 x 30.5mm / M3 |
Size | 45 x 41 x 7.3mm |
Weight | 17.8g (including heatsink) |
T-Motor F55A PRO III 8S 4IN1 AM32 ESC Package Includes
- 1x T-Motor F55A PRO III 8S 4IN1 AM32 ESC
- 1x 61mm Double-Ended SH1.0-10P Silicone Cable (Plug-and-Play with F7 / F7 HD FC)
- 1x 61mm Single-Head SH1.0-10P Silicone Cable (for F7 Pro FC)
- 1x Capacitor
- 4x Low Shock-Absorbing Washers
- 4x High Shock-Absorbing Washers