KE Series Universal Terminal Blocks: Reliable Cu & Al Cable Connection for Modern Energy Distribution
The global energy landscape is undergoing profound transformation. The booming development of photovoltaic power generation, new energy vehicle charging infrastructure, and smart power distribution cabinets has raised higher requirements for electrical connection components. As the core component of cabinet wiring, terminal blocks must deliver stable conductivity, wide cable compatibility and long-term operational safety. LINKWELL’s KE series universal terminal blocks are engineered to meet these evolving market demands, providing a one-stop wiring solution for low-voltage electrical systems.
Product Overview
LINKWELL KE series universal terminal blocks are DIN-rail mounted connection terminals designed for both copper and aluminium conductors. They support wire cross-sections ranging from 1.5 mm² up to 300 mm², covering small control circuits all the way to heavy-current power distribution applications.
The KE portfolio includes flexible configurations:
- 1-pole versions with 2, 4 or 6 holes
- Multi-pole variants: 3-pole (6 holes), 5-pole (10 holes)
- Special PEN junction blocks for TN-C earthing & neutral integration
- Matching KEPC protective covers for dust-proof safety upgrade
With CE, CB, RoHS certifications, these terminals are fully qualified for global market access, suitable for electrical cabinet wiring across industrial, commercial and renewable energy sectors.
Core Advantages
1. Dual Compatibility for Copper & Aluminium Cables
A standout feature of KE terminals is compatibility with both copper and aluminium conductors. It works for solid, stranded and flexible round or sector-shaped wires. Aluminium cables are widely adopted in large power distribution projects to cut material costs, yet they demand reliable clamping technology to avoid loose contacts and thermal runaway. The optimized aluminium alloy terminal body of the KE series creates stable clamping force, ensuring low contact resistance whether installing Cu or Al cables.
2. Precise Tightening Torque Specification for Safe Installation
Every model defines clear tightening torque (N·m) values for different wire gauges, which is critical for field installation.
- Insufficient torque → loose connection, overheating risk
- Over-tightening → damage to conductor or terminal housing
For example, the KE60 series for 1.5~16 mm² cables specifies 1.5 N·m for 1.5 mm² copper wires and 3 N·m for 2.5–16 mm² aluminium wires. Installers can follow the torque parameters strictly to achieve repeatable, safe connections, which is essential for long-term reliability in PV combiner boxes and EV charging cabinets.
3. Modular & Space-saving Design
The compact structure and optimized aluminium body reduce both weight and cabinet space occupation, helping customers save overall project costs. DIN rail clip enables fast mounting and replacement. Users can freely combine 2-hole,4-hole,6-hole single-pole terminals and multi-pole blocks to match circuit requirements. The series also supplies dedicated KEPC dust protection covers, adding an extra safety barrier for harsh working environments.
4. Rich Models to Match Diverse Circuit Needs
The KE family covers simple single-circuit wiring, 3P+N+T tetra earth circuits, and PEN blocks for TN-C power grids. Whether you need a simple 2-hole single-pole terminal for small wiring or high-current models up to 300 mm² for main power feeders, there is a matching KE model.
Application Scenarios
The KE series is widely deployed in key low-voltage power segments:
✅ Metering Cabinets: Reliable connection for power metering circuits, stable under long-term continuous current.
✅ Distribution Boards: Main and branch circuit wiring inside low-voltage distribution cabinets for commercial & residential power systems.
✅ Solar PV Systems: Combiner boxes and PV distribution cabinets, adapting to the outdoor, temperature-fluctuating working environment of solar panels.
✅ EV Charger Units: Internal wiring for DC and AC charging piles, handling frequent load changes of charging equipment.
Industry Outlook
Against the backdrop of global carbon neutrality, renewable energy and electric vehicle industries keep expanding. Power distribution systems face growing challenges: higher current loads, mixed Cu/Al cable designs, stricter safety standards and demand for compact cabinet layouts. Traditional terminals are often limited to only copper wires, or lack unified torque guidance, which cannot satisfy the new energy projects. LINKWELL KE universal terminals solve these pain points, supporting mixed copper-aluminium wiring, with complete certification and full range specifications.
As electrical projects pursue safer, more economical and easier-to-install wiring solutions, universal terminal blocks will become the mainstream choice for cabinet builders. LINKWELL will continue to upgrade the KE series, to support the stable operation of smart distribution networks and new energy infrastructure worldwide.