Copper Lug Terminals (50A–800A Series)

Copper Lug Terminals (Closed Type) are heavy-duty power lugs featuring a closed-barrel structure for maximum mechanical strength and electrical stability.
They are widely used in energy storage systems (ESS), EV power subsystems, and industrial power distribution where long-term reliability and high current capacity are critical.

This SKU consolidates the most commonly used closed type copper lug sizes into a single standardized offering, covering the real-world current range from 50A to 800A.

Key Features

• Closed-barrel structure for high mechanical strength

• High-purity copper for excellent conductivity

• Tin-plated surface for corrosion resistance

• Designed for high-current applications (50A–800A)

• Wide wire range coverage: 10 AWG – 500 MCM

• Multiple stud hole sizes available (M6–M16)

• Strong vibration resistance

• Ideal for ESS, EV, and industrial power systems

Applications

• Energy Storage Systems (ESS)

• EV / eVTOL power distribution

• Battery packs and battery racks

• Inverters and power converters

• Charging stations

• Power distribution units (PDU)

• Industrial control cabinets

• Renewable energy systems

Series Overview

Technical Specifications

• Terminal type: Copper lug (closed type)

• Material: High-purity copper (≥99.9%)

• Plating: Tin plated

• Structure: Closed barrel

• Current rating: 50A–800A

• Voltage rating: Up to 1000V DC

• Stud hole: M6–M16

• Wire range: 10 AWG – 500 MCM

• Operating temperature: -40°C to +125°C

• Compliance: RoHS, REACH

Selection Guide

Choose the correct copper lug based on:

1. Wire gauge / cable cross-section

2. Required current rating (50A–800A)

3. Stud hole size (M6–M16)

4. Installation environment (indoor / outdoor)

5. Crimp tooling compatibility

If you provide your cable size and current requirement, we can recommend a standard copper lug configuration from our ESS-focused stock range.

Cross-System Compatibility

Our copper lugs are commonly used together with:

• SurLok / ePower / ATHP / RTHP connectors

• High-voltage battery connectors

• Power distribution blocks

• Busbars and battery terminals

• ESS inverter input terminals

This makes them an ideal power termination solution for:

• Battery rack interconnects

• ESS cabinet wiring

• EV traction power subsystems

• High-current PDU assemblies

Copper Lug SKU

We intentionally consolidate closed type copper lugs into a single standardized SKU page to simplify product selection.

Instead of offering dozens of near-identical variants, we focus on:

• The most frequently used ESS power sizes

• Stable long-term supply

• Clear current and wire mapping

• Industry-oriented configuration guidance

This helps OEMs and system integrators reduce sourcing complexity while ensuring long-term system compatibility.

Packaging & Customization

• Standard packaging: bulk cartons

• OEM branding and labeling available

• Custom stud hole size

• Custom plating thickness

• Custom barrel length (upon request)

• Matching heat shrink tubing available

Call to Action

Looking for a reliable copper lug for your ESS or power system?
Tell us your cable size, current load, and terminal stud size.
We will recommend a standard copper lug configuration for your application.