400A Square Power Terminal Post IP67 Waterproof 1000VAC Nickel-Plated Copper (Red/Black Pairs)

400A Rectangular Terminal Post

Engineered to meet the strict parameters of next-generation energy infrastructure, the Longyyd 400A Rectangular Terminal Post offers an unparalleled connection interface for heavy-duty electrical arrays. Its core advantage lies in its solid full-copper construction finished with a protective nickel plating, optimizing electronic transition while offering total immunity to surface corrosion and mechanical wear. With a certified insulation envelope rated for 1000VAC and UL94-V0 fire resistance, this terminal post is the definitive choice for high-power distribution panels, electric heavy vehicles, and commercial energy storage systems (ESS).

Key Features & Structural Advantages

• Nickel-Plated Pure Copper Core: Provides high electrical conductivity and excellent wear resistance. The premium nickel barrier layer prevents copper oxidation even under prolonged high-temperature and humid cycles.
• 1000VAC Commercial Rating: Designed with a dielectric breakdown threshold >3000VAC/min, providing complete safety for high-voltage applications.
• Strict Polar Isolation: Features distinct Red (Positive) and Black (Negative) enclosures to ensure error-free panel setup and maintenance routing.
• Integrated M8 Architecture: Standardized M8.0*P1.25 internal thread and heavy-duty flat busbar adapter ensure gas-tight connection with terminal lugs or wire rings.

400A Rectangular Terminal Post Technical Specifications

Industrial Applications

• Electric Vehicles (EV/HEV): Main power connection for battery packs, power distribution units (PDUs), and heavy electric bus/truck components.
• Industrial Energy Storage: High-power lithium battery storage containers, solar power plants, and telecom backup batteries.
• Heavy Machinery: High-current electric control boxes, mining equipment, and industrial automation power grids.

FAQ

Q1: What are the benefits of the nickel-plated copper terminal compared to standard brass?
A: Our 400A model utilizes high-purity full-copper conductors finished with an industrial nickel-plating process. Copper offers significantly higher electrical conductivity than brass, minimizing heat generation under full 400A continuous loads. The nickel layer provides extreme wear resistance and prevents oxidation, ensuring stable contact resistance across years of operation.
Q2: Can this terminal post handle 1000V DC energy storage systems safely?
A: Yes. The specification sheet certifies a dielectric strength of >3000VAC per minute and a rated working voltage of 1000VAC. It is thoroughly insulated and safely deployed in both high-voltage AC inverter outputs and heavy-duty DC solar arrays or battery banks.
Q3: Does the package include all necessary mounting hardware for IP67 sealing?
A: Each product shipment contains the complete assembly kit shown in our catalog: 1x terminal unit (Red or Black), 1x custom-fit rubber waterproof sealing gasket, 4x panel mounting screws, 4x retaining nuts, and 1x heavy-duty rectangular insulating flip-cover.
Q4: What is the exact panel cutout and screw hole template required?
A: The base flange is a 40mm x 40mm square. The panel cutout diameter should match the center cylinder diameter (∅28.8mm), and the 4 mounting holes are configured on a perfect square grid with a 27mm center-to-center spacing, accommodating standard M4 size mounting screws.
Q5: Is it possible to order custom configurations for unique cable connections?
A: Yes, as a commercial-scale manufacturing plant, we accommodate OEM and ODM inquiries. We can adjust thread depths, provide alternate metric/imperial thread sizes, or supply customized bulk packaging configurations for large industrial contracts.

Customization Available:
For custom lengths or bulk pricing, please email us:
nick.xu@lyd123.com