OT Copper Lug Terminals (5A–1000A Series)

OT Copper Lug Terminals are open-barrel heavy-duty power lugs ideal for energy storage systems (ESS), EV/eVTOL power distribution, and industrial power applications.

This SKU consolidates the most commonly used open type copper lug sizes into a single standardized offering, covering a wide current range from 5A to 1000A, enabling fast selection and stable long-term supply for OEMs and system integrators.

Key Features

• Open-barrel design for fast crimping and visual inspection

• High-purity copper for excellent conductivity

• Tin-plated for corrosion resistance

• Supports 5A–1000A high-current applications

• Wide wire range: 22–500 MCM (depending on size)

• Multiple stud hole sizes available (M3–M16)

• Mechanical stability under vibration

• Ideal for ESS, EV, eVTOL, 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: Open type copper lug

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

• Plating: Tin plated

• Structure: Open barrel

• Current rating: 5A–1000A

• Voltage rating: Up to 1000V DC

• Stud hole: M3–M16

• Wire range: 22 AWG – 500 MCM

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

• Compliance: RoHS, REACH

Selection Guide

Select an OT copper lug based on:

1. Wire gauge / cable cross-section

2. Required current rating (5A–1000A)

3. Stud hole size (M3–M16)

4. Installation environment (indoor / outdoor)

5. Crimp tooling compatibility

Our team can recommend the optimal OT copper lug size based on your cable, current, and connector system.

Cross-System Compatibility

OT Copper Lugs are commonly used with:

• SurLok / ePower / ATHP / RTHP connectors

• High-voltage battery terminals

• Busbars and power distribution blocks

• ESS inverter inputs

• EV / eVTOL high-current harnesses

Ideal for:

• Battery rack interconnects

• ESS cabinet wiring

• EV traction power subsystems

• High-current PDU assemblies

OT Copper Lug SKU

We intentionally consolidate all open type copper lugs into one standardized SKU page:

• Covers full ESS / EV / industrial current spectrum (5A–1000A)

• Stable long-term supply

• Clear current & wire mapping

• Simplifies product selection for OEMs and system integrators

This eliminates the need for customers to navigate dozens of small variants.

Packaging & Customization

• Bulk cartons standard

• OEM branding available

• Custom stud holes & barrel lengths

• Custom plating thickness

• Matching heat shrink tubing available

• Optional insulated sleeves

Call to Action

Need a reliable open type copper lug for your ESS, EV, or industrial project?
Provide your cable size, current, and stud hole requirement.
We’ll recommend the correct OT copper lug configuration.