350A BESS Connectors
A rugged, engineer-grade 350A battery energy storage connector with 12.0 mm Radsok contacts for demanding ESS, UPS, and industrial power distribution — compact, low-loss, and IP67 rated.
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Product Introduction
PCM Cable Co., Ltd. is one of the leading 350a bess connectors manufacturers and suppliers in China. Welcome to wholesale high quality customized products at discount price from our factory. Contact us for quotation and free sample.
Product snapshot
- Target: engineers and technical buyers specifying connectors for high-current battery racks, containerized BESS and heavy-duty UPS cabinets.
- Key performance: 350A continuous, compatible with 4/0 AWG (120mm²), 12.0 mm Radsok contact for minimal contact resistance and superior thermal stability.
- Design focus: low contact resistance, predictable thermal rise (≤50K), high mechanical robustness and serviceability.
Why this connector
- Low-loss Radsok contact (12.0 mm) - optimized for sustained 350A currents with 0.2 mΩ contact resistance to reduce I²R losses.
- Thermal behavior - engineered to stay within ≤50K temperature rise under rated conditions (ensure correct cable routing & torque).
- Durability - ≥1000 mating cycles and corrosion-resistant silver/tin plating on copper alloy bodies.
- Environmental reliability - IP67 sealing and Nylon UL94-V0 housing for cabinet and semi-outdoor deployments.
Specifications
| Product Name | Energy Storage Connector – 350A Large Ampere High Current Plug |
| DWG No. | PCM-350A-BL |
| Rated Current | 350A |
| Cross-Section Wire | 4/0 AWG (120mm²) |
| Radsok Size | 12.0 mm |
| Plastic Material | Nylon UL94-V0 (Orange) |
| Sealing Ring | Silicone |
| Metal Body | Copper, Silver/Tin Plated |
| Crown Spring | High Conductivity Copper, Silver/Gold Plated |
| Rated Voltage | 1000V DC |
| Dielectric Strength | 3000V DC |
| Contact Resistance | 0.2 mΩ |
| Mating Cycles | 1000 times |
| Temperature Rise | 50K |
| Waterproof Rating | IP67 |
| Operating Temp. | -40°C to +125°C |
Typical engineering notes
- Use correct torque values and rated 4/0 AWG lugs/crimps; improper termination raises contact resistance.
- For paralleling modules, ensure busbar and cable designs account for cumulative heat and fault currents.
- Compatible with other 12.0 mm Radsok-spec mating parts, but matching manufacturer components recommended for guaranteed performance.
Applications
Designed for battery energy storage systems (BESS), containerized ESS, industrial UPS cabinets, and EV fleet depot battery racks - ideal when you need a 350A high current connector for 4/0 AWG (120mm²) cable with IP67 waterproofing.
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