One-Stop Solution

The Easiest Way to Source Power Distribution Connection Components

Unify Your Power Distribution with Our Full-Line Terminal Blocks & Connectors

Our one-stop solution covers the full spectrum of components required for a complete power distribution system. From terminal blocks and distribution blocks to cable connectors and junction boxes, every key interface in main and branch circuits can be sourced from a single trusted supplier.

This integrated product matrix reduces coordination efforts, shortens lead times, and ensures seamless compatibility across your entire project.

Modular Terminal and Connector Systems Are Engineered for Every Application

Equip your project with purpose-built components for main lines, branch circuits, metering interfaces, outdoor connections, and renewable energy installations—each system designed to improve installation speed, safety, and reliability.

Main Circuit Connection System

Outdoor & Cable Piercing Connection System

  • Insulated Piercing Connectors >

Branch & Circuit Distribution System

Renewable Energy Wiring System

Metering & Signal Connection System

Connect with Confidence Using
Customized Haiyan Products

Every terminal block and connector can be customized for voltage, current, mounting, and labeling, enabling seamless system integration and minimizing on-site adjustments.

Conductor & Insulation MaterialsChoose from pure copper, tin-plated copper, aluminum, and polycarbonate (PC), etc.
Connection MethodsScrew-clamp, spring-clamp, push-in or insulation-piercing (IDC) connections are available.
Current & Voltage RatingsSmall signal (≤32A), medium (32-125A), high-current (>125A).
Mounting OptionsDIN rail mounting or panel mounting for flexible integration.
Color & LabelingColor-coded blocks or custom markings for easy wiring identification.
Dimensions & LayoutCustomizable dimensions, spacing, and arrangement to suit your cabinet or system.
Sealing & Environmental ProtectionOptional protective features for outdoor or demanding environments.

Engineering Expertise at Your Service

We provide project-oriented customers with complete technical support—from selecting the right components to offering installation guidance and verified certification support.

Product Selection Recommendations


BOM Matching for Project Requirements


Installation & Wiring Guidance


Test Reports & Third-Party Certifications

Ready to Start Your Project with HAIYAN?

From inquiry to shipment, we ensure your electrical connection system is fully supported with expert guidance.

Send Your Requirements

Get Product Selection
& BOM Support

Confirm Samples
(Existing Models or 3D Prints)

Place Order & Production

Delivery & Handover