Shenzhen ZTW Model Science&Technology Co.,ltd
| Cont./Burst Current | 100A/120A |
| Weight | 507g |
| Input Voltage | 6-14S LiPo |
| Size | 105.5*53*19.5mm |
| Parameter Programming f | Customizable |
| Model Type | Dolphin 120A FOC HV OPTO |
| BEC Output | None |
View Detail Information
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Product Specification
| Cont./Burst Current | 100A/120A | Weight | 507g |
| Input Voltage | 6-14S LiPo | Size | 105.5*53*19.5mm |
| Parameter Programming f | Customizable | Model Type | Dolphin 120A FOC HV OPTO |
| BEC Output | None | ||
| High Light | 14S ZTW 120A ESC ，6S ZTW 120A ESC ，EFoil Propulsion Waterproof ESC | ||
ZTW Dolphin 120A FOC HV OPTO Waterproof ESC 6-14S Slim-Profile for Underwater Drones and eFoil Propulsion
Slim-Profile FOC ESC for Compact Subsea Platforms
The Dolphin 120A FOC HV OPTO features an ultra-slim 19.5mm height profile, making it ideal for space-constrained underwater drones, e-foils, electric surfboards, and compact ROV thruster systems where enclosure height is limited.
100A Continuous / 120A Burst with FOC Efficiency
Delivering 100A sustained and 120A peak on 6-14S LiPo, this ESC leverages field-oriented control for smooth, efficient thrust. FOC reduces motor heating and acoustic noise — advantageous for stealthy underwater observation and extended battery runtime.
Ultra-Slim 19.5mm Enclosure
At just 105.5×53×19.5mm and 507g, the low-profile housing fits narrow electronics tubes and flat enclosures common in e-foils, underwater scooters, and streamlined AUV designs where every millimeter of height matters.
Parameterless Auto-Tuning
FOC with auto motor parameter identification enables plug-and-play integration. No manual timing or PWM settings required — a significant advantage for consumer and commercial marine products where setup simplicity is valued.
Optocoupler-Isolated Input
The HV OPTO design provides galvanic signal isolation, protecting battery management systems and controllers from high-current noise in the compact, electrically dense enclosures typical of water sports and small subsea vehicles.
Full Waterproof Marine Construction
Fully sealed waterproofing allows operation in direct water contact — essential for e-foils, electric surfboards, and diver propulsion vehicles where the ESC may be fully submerged during use.
Extended Leads, Shielded Cable & Upgradeable
8-gauge power (1145mm) and 10-gauge motor (145mm) wires support remote motor placement. The 26AWG shielded signal cable (1090mm) and field-upgradable firmware ensure reliable, future-proof performance.
| Specifications | Dolphin 130A HV OPTO | Dolphin 160A HV OPTO | Dolphin 100A FOC HV | Dolphin 120A FOC HV | Dolphin 150A FOC HV | Dolphin 300A HV OPTO |
|---|---|---|---|---|---|---|
| Continuous Current | 130A | 160A | 100A | 100A | 60A | 300A |
| Burst Current | 150A | 180A | 120A | 120A | 150A | 1200A |
| Input Voltage | 6-14S LiPo | 6-14S LiPo | 6-14S LiPo | 6-14S LiPo | 6-20S LiPo | 10-20S LiPo |
| BEC Output | None (OPTO) | None (OPTO) | None (OPTO) | None (OPTO) | None (OPTO) | 5V / 1A |
| Control Mode | BLDC | BLDC | FOC / Parameterless | FOC / Parameterless | FOC / Parameterless | BLDC |
| Programming | Tx / LCD Card G2 / App | Tx / LCD Card G2 / App | Parameterless | Parameterless | Parameterless | Optional |
| Firmware Upgrade | Supported | Supported | Supported | Supported | Supported | Optional |
| Waterproof Rating | Waterproof | Waterproof | Waterproof | Waterproof | Waterproof | IP67 Fully Waterproof |
| Power Wire | 8AWG | 8AWG | 8AWG | 8AWG | 8AWG | 6AWG |
| Motor Wire | 10AWG | 10AWG | 10AWG | 10AWG | 8AWG | 6AWG |
| Signal Cable | 26AWG Shielded | 26AWG Shielded | 26AWG Shielded | 26AWG Shielded | 26AWG Shielded | 26AWG Shielded |
| Size (L×W×H) | 90×49×23mm | 90×49×23mm | 106×53×30mm | 105.5×53×19.5mm | 148×63×50mm | 160×110×39.5mm |
| Weight | ~438g | 487g | 597g | 507g | — | 1143g |
Company Details
Business Type:
Manufacturer
Year Established:
2007
Total Annual:
>20 Million
Employee Number:
100~500
Ecer Certification：
Verified Supplier
About ZTW Shenzhen ZTW Model Science & Technology Co., Ltd. is a high-tech enterprise specializing in the R&D, manufacturing, and sales of brushless electronic speed controllers (ESCs) and propulsion systems for RC models, UAVs, and industrial applications. Since our founding in 2007, we hav... About ZTW Shenzhen ZTW Model Science & Technology Co., Ltd. is a high-tech enterprise specializing in the R&D, manufacturing, and sales of brushless electronic speed controllers (ESCs) and propulsion systems for RC models, UAVs, and industrial applications. Since our founding in 2007, we hav...
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