Company Overview

China Utility Electrical Co., Ltd, established in 1990, specializes in manufacturing cold pressing terminals and connectors. The company integrates advanced technologies and quality standards inspired by Germany, USA, Japan, and France. Their products use high-purity, environmentally friendly refined copper, ensuring excellent conductivity and ease of connection. Certifications include ISO9001, CE, RoHS, and UKAS, supporting a strong global export presence.

Quality and Certification

The company maintains a standardized management system with rigorous quality control to guarantee product stability and reliability. Certifications reflect commitment to high standards and continuous improvement, enhancing brand reputation and customer trust worldwide.

Product Series and Specifications

The product range covers various terminal types with detailed dimensional and electrical specifications:

• Tab Sizes: Multiple widths and thicknesses (e.g., .110x.020", .187x.032", 2.8x0.5mm, 6.35x0.8mm).
• Screw Sizes: USA screw sizes #2 to 1, diameters 2.2mm to 28.0mm.
• Wire Size Compatibility: Wire cross-sectional areas from 0.5mm² to 400mm², with corresponding AWG sizes and max current ratings from 9A to 650A.

Terminal Types and Designations

Terminals are categorized by shape and insulation type, with model codes indicating features such as screw diameter, wire size range, insulation presence, and terminal shape. Types include Ring, Spade, Blade, Pin, Hook, Locking Spade, Flange Spade, Female, Male, Lipped Blade, Bullet Receptacles, and Piggy Back terminals.

Insulation Types

• NB: Non-insulated (bare) with weld seam
• V: PVC insulated (rated 75°C)
• NY: Nylon (PA66) insulated (rated 105°C)
• D, NYD, NID: Copper sleeve plus PVC, Nylon, or PC insulation respectively

Material and Coating

All terminals are made from high-purity copper or brass with tin plating for corrosion resistance and enhanced conductivity. Insulation materials include PVC, Nylon (PA66), and PC, selected based on application temperature requirements.

Electrical and Mechanical Parameters

• Wire size range: 0.5mm² to 400mm² (AWG 22 to 500/600 MCM)
• Maximum current ratings: 9A to 650A depending on wire size and terminal type
• Tensile strength per JIS-2805 and UL-486A standards
• Operating temperatures: 75°C for PVC insulation, up to 105°C for Nylon insulation

Product Packaging

Products are packaged in PE bags and paper boxes to ensure protection and ease of handling during transport and storage.

Product Catalog Highlights

The catalog provides detailed dimensional tables for terminal models, including item numbers, USA screw sizes, screw hole diameters, physical dimensions (length, width, thickness, hole diameter), color coding linked to wire size and insulation type, maximum current and temperature ratings, and material/plating details.

Color Coding and Cable Size Correlation

• Red: 0.5~1.5mm² (AWG 22~16)
• Blue: 1.5~2.5mm² (AWG 16~14)
• Black: 2.5~4mm² (AWG 14~12)
• Yellow: 4~6mm² (AWG 12~10)

Terminal Categories and Key Features

• Non-Insulated Terminals: Copper with tin plating, no insulation sheath, suitable for large current ratings and cable sizes up to 400mm².
• Vinyl (PVC) Insulated Terminals: Rated for 75°C, suitable for smaller cable sizes and moderate current ratings.
• Nylon Insulated Terminals: Rated for 105°C, suitable for higher temperature applications and enhanced durability.
• Double Copper Sleeve Option: Available for enhanced mechanical strength and electrical connection reliability.

Dimensional and Mechanical Details

Each terminal type includes precise dimensional data such as length, width, height, flange size, screw hole diameter, and thickness to ensure compatibility with standard USA screw sizes and mounting hardware.

Specialized Terminal Types

• Hook, Locking, Flange Spade, and Lipped Blade terminals with various insulation options and double copper sleeve availability.
• Female and Male terminals, including fully insulated and flag-type designs.
• Bullet receptacles and piggy back terminals with detailed specifications and color coding.
• Cord end terminals (non-insulated, vinyl-insulated, nylon-insulated, twin cables) for flexible wiring applications.
• Butt splices and parallel terminals for wire joining and distribution.
• Marine/shipping specific terminals and transition connectors for copper-aluminum wire connections using friction welding technology.

Material and Quality Standards

• Materials: High-purity copper (T2), brass, aluminum (L3), with tin plating for corrosion resistance.
• Insulation: PVC (75°C), Nylon (PA66, 105°C), and PC for flame retardancy and temperature tolerance.
• Manufacturing: Pressing, friction welding, and plating processes ensure durability and performance.
• Compliance: RoHS environmental standards and international certifications (ISO9001, CE, UKAS).

Packaging and Handling

Standard packaging includes PE bags combined with paper boxes to protect products during transport and storage, facilitating easy handling.

Usage and Application Recommendations

• Select terminals based on cable cross-section, current rating, and operating temperature to prevent overheating and ensure safety.
• Use appropriate insulation type (PVC or Nylon) according to temperature requirements.
• Verify screw and bolt sizes for compatibility with application hardware.
• Consider double copper sleeve terminals for enhanced connection reliability where mechanical strength is critical.
• Use standard or certified compatible wires with UTL terminals for optimal performance.

Summary

This comprehensive technical document details a wide range of electrical terminals and connectors made from tin-plated copper and brass, with various insulation options and configurations. It provides critical specifications including material composition, electrical and mechanical parameters, dimensional data, packaging, and color coding. The information supports proper selection and application in diverse electrical wiring and distribution systems, emphasizing quality, reliability, and compliance with international standards.