Radio systems and receivers: choosing a reliable control link
Channels, receiver protocols, telemetry, range, redundancy and what to check before matching a transmitter to a model.
Firma 50A Marine ESC
Prices are intentionally not displayed on the site.
Contact RC-MODEL for current availability, technical fit, compatible accessories and a formal quote.
Firma 50A Marine ESC is a Spektrum product intended for RC boats and marine installations where electronics, wiring and receiver protection must be selected carefully. This page presents the practical buying information a customer needs before ordering: fit, SKU, image, category, specifications and usage advantages.
The content is written for purchasing through RC-MODEL, without supplier prices or links to competing stores.
Key Advantages
- Organized under the Spektrum ESC and speed-control range.
- Intended for RC boats and marine installations where electronics, wiring and receiver protection must be selected carefully.
- Check model fit, connector type, voltage range and Spektrum protocol compatibility before ordering.
- Includes local product imagery and structured specifications for easier comparison inside RC-MODEL.
Core Specifications
- Manufacturer: Spektrum
- Brand: Spektrum
- Product Code: SPMX-1128
- Product Family: Spektrum ESC and speed-control range
- Application: Marine
- Compatibility Focus: Check model fit, connector type, voltage range and Spektrum protocol compatibility before ordering.
- Spektrum Category: Boats / Parts, Electronics & Accessories / Electronic Speed Controls
- Input Voltage: 3-4S LiPo
- Motor Type: Brushless
- BEC: Yes
- BEC Continuous Current: 5A/Peak: 5.5A
- BEC Type: Switching
- BEC Voltage: 6V
- Connector Type: IC3
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| Technical Specifications | |
| Manufacturer | Spektrum |
| Brand | Spektrum |
| Product Code | SPMX-1128 |
| Spektrum Category | Boats / Parts, Electronics & Accessories / Electronic Speed Controls |
| Connector Type | IC3 |
| Product Family | Spektrum ESC and speed-control range |
| Application | Marine |
| Compatibility Focus | Check model fit, connector type, voltage range and Spektrum protocol compatibility before ordering. |
| BEC | Yes |
| BEC Type | Switching |
| BEC Voltage | 6V |
| Forward | Yes |
| Input Voltage | 3-4S LiPo |
| Maximum Continuous Current | 50A |
| Product Height | 0.57" (14 mm) |
| Product Length | 3.51" (89 mm) |
| Product Width | 1.11" (28 mm) |
| Programmable | Yes |
| Reverse | Yes |
| BEC Continuous Current | 5A/Peak: 5.5A |
| Motor Type | Brushless |
| Output Connector | 4mm Bullet |
| Overload Protection | Yes |
| Water-Resistant | Yes |
| Wire Gauge | 12 AWG |
| Maximum Burst Current | 200A |
Tags: Spektrum, SPMX-1128, Spektrum ESC and speed-control range, Spektrum Catalog, Spektrum ESCs, Spektrum Boat Accessories, RC-MODEL