Product overview
The HOBBYWING XRotor PRO 25A Circular is an electronic speed controller with an integrated motor mount for 450–550 class multirotors. The mount fits a carbon fiber arm tube with a 16mm outer diameter and positions the motor close to the ESC to simplify propulsion wiring and installation. The motor is sold separately. The combined ESC and mount structure provides dust and splash protection, and the ESC incorporates high-visibility red and green navigation LEDs. The assembly measures 89.3 × 44.5 × 20.9mm and weighs 50.5g with the motor mount.
The controller supports 3–6S LiPo batteries and has no BEC output. Input wiring comprises one red and one black 18AWG wire, each 300mm long; no output wires or input/output connectors are included. Product numbers are 30902022 for black and 30902023 for red. Its DEO (Driving Efficiency Optimization) technology includes active braking, which rapidly decelerates the motor when throttle is reduced, supporting sharp turns, altitude changes and sudden braking. Adaptive default settings include automatic timing adjustment. The ESC is compatible with various flight-control systems and supports throttle signal frequencies up to 621Hz.
Specifications
| Specification | Value & conditions |
|---|---|
| Product role | Integrated UAV propulsion system architecture25A is retained as part of the model name; no measured current rating is asserted. |
| Product identification | XRotor PRO 25A Circular integrated UAV propulsion system architectureAs identified in the company's development history. |
| Model | HOBBYWING XRotor PRO 25A Circular |
| Product number | 30902022 (Black) / 30902023 (Red)Black / Red |
| Continuous / peak current | 25A / 40A |
| Battery | 3–6S LiPo |
| BEC output | None |
| Input wires | Red 18AWG, 300mm × 1 / Black 18AWG, 300mm × 1 |
| Output wires | None |
| Input connectors | None |
| Output connectors | None |
| Dimensions | 89.3 × 44.5 × 20.9mm |
| Weight | 50.5gWith motor mount |
| Application | 450–550 class multirotors |
| Arm tube fit | 16mm outer-diameter carbon fiber arm tube |
| Protection | Dustproof and splashproofIntegrated ESC and motor mount |
| Motor mounting | Motor can mount directly against the ESC |
| Motor included | No |
| Drive technology | DEO (Driving Efficiency Optimization) |
| Active braking | Rapid motor decelerationWhen throttle is reduced |
| Efficiency and thermal features | Higher driving efficiency, longer flight time, lower ESC temperature and more reliable operationDEO technology |
| Timing adjustment | Automatic, adaptive timingDefault settings |
| Maximum throttle signal frequency | 621Hz |
| Navigation LEDs | High-visibility red/green navigation LEDs on the ESC |
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