SL906 Solar Spanners
MC4 / Type 4 Solar Spanners
SL906 Solar Spanners
SL906 Solar Spanners – Professional Tool for MC4, NC4 & H4 PV Connectors
Overview
The SL906 Solar Spanners are purpose‑designed tools for tightening Type 4 (MC4) connectors, the most widely used connector type across modern photovoltaic (PV) systems. Engineered for efficiency, durability, and ease of use, the SL906 ensures secure and reliable terminations during solar installation or maintenance. The tool set is also fully compatible with NC4 and H4 connectors, making it a versatile addition to any solar installer’s toolkit.
Key Features
✔ Designed for Type 4 (MC4) PV Connectors
MC4 connectors are the industry standard for solar array wiring due to their reliability and weather‑resistant properties. The SL906 spanners are shaped to precisely match MC4 fittings, allowing safe tightening without damaging the connector housing.
✔ Compatible with NC4 & H4 Connectors
In addition to MC4 connectors, the SL906 works seamlessly with:
- NC4 connectors
- H4 connectors
This compatibility makes the tool ideal for mixed‑component installations or system upgrades.
✔ High‑Strength Construction
Manufactured from durable, lightweight materials, the spanners deliver long‑term performance in demanding on-site environments.
✔ Easy, Fast Connector Assembly
The dual‑ended design enables quick and efficient tightening, helping installers save time while ensuring correct torque and a professional finish.
✔ Essential for PV System Installers
Whether you’re assembling new PV arrays or maintaining existing systems, the SL906 Solar Spanner set ensures safe cable connections—critical for energy efficiency and system longevity.
Why Use the SL906 Solar Spanners?
Improve Connection Reliability
Proper tightening reduces electrical resistance, heat build-up, and system faults.
Avoid Connector Damage
Generic tools can crack or deform connector housings. The SL906 is shaped specifically for solar connectors, ensuring safe installation.
Increase Installation Efficiency
Quick and easy handling makes the SL906 perfect for large-scale solar projects or tight installation schedules.

