Overview
The Hobbywing XRotor ESC-45A 3-6S 4-in-1 BLHeli_32 is a 4-in-1 ESC for FPV drones with a 130-280mm diagonal wheelbase. It uses a 32-bit ARM F4 processor with an operating frequency up to 120MHz and features 20x20mm mounting hole spacing for compact builds.
Key Features
- 32-bit ARM F4 processor, operating frequency up to 120MHz
- BLHeli_32 firmware ready (3rd-generation BLHeli-32 firmware)
- Dynamic PWM support: 24K-128KHz PWM frequency (supports up to 128KHz) for precise throttle control
- Throttle signal support: regular PWM, OneShot125, OneShot42, Multishot, Proshot, and DShot up to at least DShot1200 (auto-detected on power-up)
- Damped light mode (regenerative braking and active freewheeling)
- Sync-loss prevention features with tunable parameters
- Built-in voltmeter for FC monitoring of amp & volt in real time
- Connection options to FC: direct plug cable or solder pads; motor outputs via solder tabs
- Shock-absorbing mounting hole design to reduce vibration impact on upper devices (e.g., FC)
- Beacon functionality (ESC beeps after a given time of zero throttle)
Specifications
| Model | XRotor 45A 4in1 |
| SKU | 30902065 |
| Application | FPVs with 130-280mm diagonal wheelbase |
| LiPo power input | 3S-6S |
| Continuous current | 45Ax4 |
| Burst current | 60Ax4 |
| BEC output | N/A |
| Mounting hole spacing | 20x20mm |
| Processor | 32-bit ARM F4 |
| Operating frequency | 120MHz |
| PWM frequency support | 24K-128KHz (dynamic), up to 128KHz |
| Firmware | BLHeli_32 |
| DShot support | Up to at least DShot1200 |
| Input signal modes | Regular PWM; OneShot125 (125-250us); OneShot42 (41.7-83.3us); Multishot (5-25us); Proshot; DShot |
| Throttle calibration | Supported |
| DEO | Supported / Enhanced |
| OneShot mode | Supported |
| Timing | Supported |
| Motor rotation | Supported |
| Input wires | Red-14AWG-100mm / Black-14AWG-100mm |
| Output wires | No wires (solder tabs) |
| Connectors (In/Out) | XT60 plug enclosed with package |
| Weight | 12g |
| Size | 40x33x5mm |
Note: Some source data also lists “AM32” under firmware/programming fields. The product identification and feature text specify BLHeli_32.
What’s Included
- XT60 plug (enclosed with package)
For order support and compatibility questions, contact support@rcdrone.top or visit https://rcdrone.top/.
Applications
- FPV drones (130-280mm diagonal wheelbase)
Details

The Hobbywing XRotor FPV G2 45A 4-in-1 ESC uses a compact 20x20mm mounting pattern and a 32-bit ARM F4 processor rated up to 120MHz.

The XRotor 45A 4-in-1 ESC combines four BLHeli_32 DShot1200 channels with a built-in voltmeter and offers either a direct plug cable or solder pads for FC wiring.

Hobbywing XRotor 4-in-1 ESC supports multiple throttle protocols including DShot, regular PWM, Oneshot, Multishot, and Proshot for flexible FC setup.

The XRotor 4-in-1 ESC comes BLHeli-32 firmware ready, supporting parameter adjustments and firmware upgrades.

The XRotor 4-in-1 ESC supports up to 128kHz dynamic PWM frequency for more precise throttle control.
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