Product overview
The Nanchang Changkong Technology CKESC Apex 300A 24S is a brushless electronic speed controller for UAV motor control. Its 140.4 × 69.6 × 36.5 mm dimensions and 590 g weight, including wiring, define its installation space and mass contribution. It accepts a 12~24S supply, 3.3~5 V input signals and 1000~2000 µs throttle pulses. Shielded signal wiring and optically isolated signal inputs and outputs reduce interference. No BEC is included. Serial output supplies real-time voltage, motor speed, current, ESC temperature and debugging data.
PWM is standard, with PWM+CAN available as an option and data storage capability specified. Timing-adjustment firmware is supplied by default; a fixed version is optional, and high-power mode can be enabled. Continuous operating current is 150 A with specified cooling, while maximum operating current is 300 A for three seconds. Throttle refresh rates span 50~500 Hz, with 100~400 Hz recommended, and throttle response time is 400 ms. The operating ambient range is -20~+65 °C. Ingress protection is IP54, with IP67 available through customization.
Above 115 °C, the controller gradually reduces maximum output power, potentially to 40% of full-throttle power, and restores original power after temperature falls. Signal loss lasting 200 ms initiates output reduction: throttle drops below 50% within 1~2 seconds, then decreases slowly until shutdown. Low-voltage protection is disabled by default and can be enabled through customization. Excessive supply voltage prevents startup; unsuccessful starts trigger current limiting and automatic retries. Stall protection attempts a restart, although a stall at high throttle may damage the ESC. Overcurrent protection limits peak current, while overload protection restricts maximum throttle.
Specifications
| Specification | Value & conditions |
|---|---|
| Manufacturer and model | Nanchang Changkong Technology, CKESC Apex 300A 24S UAV electronic speed controller |
| Specification designation | 300A 12~24S |
| Voltage | 12~24S |
| Dimensions | 140.4 × 69.6 × 36.5 mm |
| Weight | 590 gIncluding wiring. |
| Continuous operating current | 150 AWith specified cooling. |
| Maximum operating current | 300 AFor 3 seconds. |
| Standby consumption | ≤10 mAAt 100 V. |
| Throttle pulse range | 1000~2000 µs |
| Throttle refresh rate | 50~500 HzRecommended refresh rate: 100~400 Hz. |
| BEC | None |
| Input signal level | 3.3~5 V |
| Temperature protection threshold | 115 °C |
| Communication | PWM; optional PWM+CAN; data storage capabilityPWM+CAN is optional. |
| Operating ambient temperature | -20~+65 °C |
| Throttle response time | 400 ms |
| Ingress protection | IP54IP67 can be customized. |
| Low-voltage protection | Optional customized low-voltage protectionDisabled by default; can be enabled through customization. |
| High-voltage protection | Prevents motor startupWhen supply voltage exceeds the permitted value. |
| Startup protection | Limits starting current and automatically retries startupIf startup is unsuccessful. |
| Stall protection | Attempts to restart the motorIf the motor stalls during normal operation; a stall at high throttle may damage the ESC. |
| Overtemperature protection | Gradually reduces maximum output power, potentially down to 40% of full-throttle powerWhen temperature exceeds 115 °C; original power is restored after temperature falls. |
| Overcurrent protection | Limits peak current to prevent it exceeding the limit |
| Overload protection | Limits maximum throttle to protect the propulsion systemWhen excessive motor load is detected. |
| Signal-loss protection | Progressively reduces output power, rapidly lowers throttle below 50% within 1~2 seconds, then slowly reduces throttle until shutdownAfter signal loss lasting 200 ms. |
| Firmware configuration | Timing-adjustment version supplied by default; fixed version available; high-power mode can be enabledDefault timing-adjustment firmware; fixed firmware is optional. |
| Real-time telemetry | Supply voltage, motor speed, current, ESC temperature and debugging dataThrough serial output. |
| Signal interface isolation | Optically isolated signal input and output interfaces to isolate interference |
| Signal wiring | Shielded signal wiring to reduce interference |
Request a quote for CKESC Apex 300A 24S
Send your application, destination country and expected quantity to the ChinaDrone team. We can discuss product selection, configuration and sourcing from China.
Submit your procurement requirements ↗No account needed. A model number is optional. Your enquiry is handled by ChinaDrone.
