High-Performance Smart ESC with Advanced Features
The Spektrum™ Firma™ 12S 200A Brushless Smart Marine ESC is built to dominate the water with precision, power, and cutting-edge technology. With a burst current capability of 1200 amps and a water-resistant design, it’s ready to handle aggressive acceleration and tough aquatic conditions. Engineered with Smart Technology, this ESC delivers real-time telemetry data straight to your compatible Spektrum™ transmitter without the need for additional modules. It’s the ideal choice for serious RC boat enthusiasts looking for performance and reliability in one package.
About the Firma Brushless Smart Marine ESC
Unmatched Power & Performance
This ESC offers explosive acceleration and ultra-smooth operation, thanks to its powerful 32-bit ARM M4 processor. With a 1200 amp burst current and compatibility with two 3S-6S batteries, it provides extreme propulsion in any marine environment.
Integrated Smart Technology
Built-in Smart Technology eliminates the need for external sensors or modules. The Smart data wire on the IC5™ connector delivers real-time telemetry including voltage, current, temperature, and more directly to your Spektrum™ transmitter. This integration streamlines your setup and gives you full visibility into your system’s performance.
Durability & Reliability
The Firma 12S 200A Brushless Smart Marine ESC is water resistant and features an advanced water-cooling system to maintain optimal temperatures during high-load use. Its multi-point protection safeguards against over-temperature, over-voltage, low-voltage, and over-current conditions. This durability ensures it keeps performing in wet, unpredictable environments.
Features:
- 1200 Amp burst current
- Smart telemetry through IC5™ connector
- 32-bit ARM M4 processor
- Water-cooled design
- Water-resistant construction
- Multi-point protection system
- Compatible with two 3S-6S LiPo batteries
- Flexible dual IC5 connectors
- No additional sensors required when using a compatible Spektrum transmitter
- Multiple programming options
Includes:
- (1) Firma™ 12S 200A Brushless Smart Marine ESC w/Dual IC5 Connectors
- Product Manual
Specifications:
| Application | Large Scale RC Boats |
|---|---|
| Motor Type | Brushless – Sensorless |
| Input Voltage | 6-12S LiPo (22.2-44.4V) |
| Continuous Current | 200A |
| Burst Current | 1200A |
| Dimensions | 3.74×2.28×1.73in (95x58x44mm) |
| Weight | – |
| BEC Voltage | 6V/7.4V/8.4V |
| BEC Continuous Current | 8A |
| BEC Peak Current | 25A |
| Motor Connector | 8mm Bullets |
| Battery Connector | Dual IC5 |
| Programmable | Yes |
*Tech Note: Do not connect a dedicated receiver battery to the receiver along with the ESC. When the ESC is turned on, it will provide the receiver with 6V regulated power from the main battery through the throttle connection. The ESC may be damaged if the receiver is also connected to a dedicated receiver battery.
**Tech Note: While water resistant, this component has not been designed to be immersed in water for long periods of time and should NOT be treated like a submarine. Additionally, most metal parts, including any screws and nuts as well as the contacts in the electrical cables, will be susceptible to corrosion if additional maintenance is not performed after running in wet conditions.
Manuals:
User Manual
This product was added to our catalog on May 14, 2025





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