ZX 50A FOC ESC ZTW 6S-14S Drone Brushless Motor Controller For UAV And EVTOL
The ZTW ZX 50A FOC ESC delivers 20A continuous and 50A burst current on 6-14S LiPo with field-oriented control. At 61×34×19.5mm and 73g, it features parameterless programming, UART/CAN, telemetry, firmware upgrade, and splash-proofing for lightweight industrial drones.
ZTW ZX 50A FOC ESC 6-14S Industrial Brushless Motor Controller for UAV and eVTOL
FOC Technology for Industrial-Grade Efficiency
The ZX 50A is the entry point to ZTW's FOC (Field-Oriented Control) industrial ESC series, delivering smoother torque, higher efficiency, and lower noise than conventional BLDC ESCs — ideal for lightweight commercial UAVs, inspection drones, and small eVTOL platforms.
20A Continuous / 50A Burst with FOC Precision
Rated at 20A sustained and 50A peak on 6-14S LiPo, this ESC leverages FOC to maximize motor efficiency across the entire RPM range, extending flight time and reducing thermal stress on both ESC and motor.
Parameterless Programming — Plug and Play
Featuring auto motor parameter identification, the ZX 50A eliminates manual throttle calibration and timing tuning. OEM integrators can deploy faster with consistent performance across production units.
Ultra-Compact 73g Form Factor
At just 61×34×19.5mm and 73g, this is the smallest ESC in the ZX industrial line. 14-gauge power and motor wires (55mm) keep the installation footprint minimal for weight-sensitive airframes.
UART & CAN Bus with Telemetry
Customizable UART and CAN bus interfaces enable real-time telemetry — current, voltage, temperature, and RPM — integrating seamlessly with industrial flight controllers for mission monitoring and predictive maintenance.
Field-Upgradable Firmware
Upgrade firmware in-field via the communication interface, ensuring access to the latest FOC algorithm refinements, protocol support, and reliability enhancements without hardware replacement.
Splash-Proof Industrial Build
Splash-proof construction protects against moisture, dust, and particulates, making the ZX 50A suitable for outdoor commercial operations in demanding environmental conditions.

Technical Specifications
| Specifications | ZX 50A FOC | ZX 60A FOC | ZX 80A FOC | ZX 150A FOC | ZX 200A FOC 14S | ZX 200A FOC 20S | ZX 300A FOC 28S |
|---|---|---|---|---|---|---|---|
| Continuous Current | 20A | 20A | 30A | 60A | 70A | 70A | 120A |
| Burst Current | 50A | 60A | 80A | 150A | 200A | 200A | 300A |
| Input Voltage | 6-14S LiPo | 6-14S LiPo | 6-14S LiPo | 6-14S LiPo | 6-14S LiPo | 6-20S LiPo | 6-28S LiPo |
| BEC Output | None (OPTO) | None (OPTO) | None (OPTO) | None (OPTO) | None (OPTO) | None (OPTO) | None (OPTO) |
| Control Mode | FOC / Parameterless | FOC / Parameterless | FOC / Parameterless | FOC / Parameterless | FOC / Parameterless | FOC / Parameterless | FOC / Parameterless |
| Communication | UART & CAN (Customizable) | UART & CAN (Customizable) | UART & CAN (Customizable) | UART & CAN (Customizable) | UART & CAN (Customizable) | UART & CAN (Customizable) | UART & CAN (Customizable) |
| Firmware Upgrade | Supported | Supported | Supported | Supported | Supported | Supported | Supported |
| Waterproof Rating | Splash-Proof | Splash-Proof | Splash-Proof | Splash-Proof | Splash-Proof | Splash-Proof | Splash-Proof |
| Power Wire | 14AWG | 14AWG | 12AWG | 10AWG | 8AWG | 8AWG | 8AWG |
| Motor Wire | 14AWG | 14AWG | 12AWG | 10AWG | 8AWG | 8AWG | 8AWG |
| Signal Cable | 30AWG JR | 30AWG JR | 30AWG JR | 26AWG Shielded | 26AWG Shielded | 26AWG Shielded | 26AWG Shielded |
| Size (L×W×H) | 61×34×19.5mm | 80×34×19.5mm | 80×34×19.5mm | 110×53×30mm | 105×58×30mm | 148×63×38mm | 188×95×39.5mm |
| Weight | 73g | 105g | 116g | 329g | 329g | 876g | 1119g |