350A HV SBEC G2 ZTW Seal ESC With 12V SBEC For Industrial Marine Propulsion
The ZTW Seal 350A HV SBEC G2 is the 32-bit 170MHz series flagship, delivering 350A continuous and 450A burst on 6-14S LiPo. With IP67, dual water cooling, 10A SBEC (6-12V), forward/reverse, telemetry, and APP/LCD programming for extreme marine propulsion.
ZTW Seal 350A HV SBEC G2 32-Bit Waterproof ESC 6-14S Flagship with 12V SBEC and Water Cooling for Giant RC Boats and Industrial Marine Propulsion
32-Bit 170MHz Flagship Extreme-Power HV ESC
The Seal 350A HV SBEC G2 is the most powerful ESC in the entire Seal G2 series, pairing a 170MHz 32-bit processor with 350A continuous output for giant-scale RC boats, heavy commercial surface vessels, large subsea thrusters, and industrial marine propulsion.
350A Continuous / 450A Burst with Advanced MOSFETs
Next-generation MOSFET technology delivers low heat generation and withstands extreme instant current surges with high reliability. 350A sustained and 450A peak delivers up to ~19.8kW at 14S — propelling the largest racing boats and driving heavy multi-thruster ROV systems.
IP67 Waterproof + Massive Dual Water Cooling
Full IP67 waterproof construction with two water-cooling pipes and oversized customized heat sinks manages the extreme thermal load of sustained 350A operation, even in passive-cooling configurations.
12V 10A SBEC for Complex Auxiliary Systems
The 6.0/7.4/8.4/10/12V adjustable BEC supplies 10A, powering control electronics and 12V industrial auxiliary systems — pumps, lighting, winches, and telemetry — common on large boats and commercial subsea vehicles.
Forward/Reverse & Freewheeling
Dual running modes cover racing and operational requirements. Freewheeling technology improves driving efficiency and conserves battery energy during coasting.
Comprehensive Protection Suite
Thermal power reduction, LVC, start-up, signal loss, phase loss, over-current, abnormal voltage, and over-load protection — essential safety for extreme-power high-voltage marine systems.
Telemetry & G2 Programming
Real-time data returning (current, voltage, temperature, RPM, throttle, status) via ZTW App or LCD Program Card G2. Full configuration via Bluetooth app, LCD card, or transmitter stick.

Technical Specifications
| Specifications | Seal 130A SBEC HV G2 | Seal 160A SBEC HV G2 | Seal 200A SBEC HV G2 | Seal 300A HV OPTO G2 | Seal 350A SBEC HV G2 |
|---|---|---|---|---|---|
| Continuous Current | 130A | 160A | 200A | 300A | 350A |
| Burst Current | 150A | 180A | 240A | 320A | 450A |
| Input Voltage | 6-14S LiPo | 6-14S LiPo | 6-14S LiPo | 6-14S LiPo | 6-14S LiPo |
| BEC Output | 6.0/7.4/8.4V Adj. / 10A | 6.0/7.4/8.4V Adj. / 10A | 6.0/7.4/8.4/10/12V Adj. / 10A | None (OPTO) | 6.0/7.4/8.4/10/12V Adj. / 10A |
| CPU | 32-bit / 170MHz | 32-bit / 170MHz | 32-bit / 170MHz | 32-bit / 170MHz | 32-bit / 170MHz |
| Water Cooling | Dual-Channel | Dual-Channel | Dual-Channel | Dual-Channel | Dual-Channel |
| Programming | Tx / LCD Card G2 / App | Tx / LCD Card G2 / App | Tx / LCD Card G2 / App | Tx / LCD Card G2 / App | Tx / LCD Card G2 / App |
| Firmware Upgrade | Supported | Supported | Supported | Supported | Supported |
| Waterproof | Yes | Yes | Yes | Yes | Yes |
| Power Wire | 10AWG | 10AWG | 10AWG | 8AWG | 6AWG |
| Motor Wire | 10AWG | 10AWG | 10AWG | 8AWG | 6AWG |
| Battery Plug | XT90 (Amass) | XT90 (Amass) | None (Solder) | None (Solder) | None (Solder) |
| Motor Bullet | 5.5mm Gold | 5.5mm Gold | None (Solder) | None (Solder) | None (Solder) |
| Size (L×W×H) | 106×52×30mm | 106×52×30mm | 113×53×33mm | 130×64×38mm | 196×95×36mm |
| Weight | 296g | 304g | 462g | 542g | 1443g |