The Stäubli MC4 Toolset is the ultimate solution for professional photovoltaic (PV) installers and technicians working on solar projects across a range of applications, including caravans, RVs, marine systems, off-grid solar installations, industrial PV systems, and tiny homes. This comprehensive set includes all the necessary tools for safe, reliable, and high-performance assembly of MC4 and MC4-Evo 2 connectors — the gold standard in PV connections.

Using the correct tools is critical for ensuring secure, weatherproof, and low-resistance connections in your solar array. The Stäubli MC4 Toolset is specifically designed to ensure compliance with industry standards, reducing the risk of faults, improving safety, and enhancing the overall durability of your solar power system.

This professional-grade toolset includes everything required for field installations:

1) Torque Tool x1

Ensures uniform torque across all PV connectors, preventing over-tightening or under-tightening — a critical step for creating weatherproof, secure connections.

2) Crimping Pliers with Die-Set for 4, 6, and 10mm² x1

Designed to precisely crimp MC4 and MC4-Evo 2 connectors, ensuring seamless electrical conductivity and compliance with industry standards.

3) Stripping Pliers x1

Cleanly strip PV cable insulation without nicking the conductor, preserving cable integrity and ensuring reliable connections.

4) Cable Cutter x1

Delivers smooth, burr-free cuts on PV cables, ensuring precise lengths and a clean surface for crimping, critical for low-resistance connections.

5) Open-End Spanner x1

Quickly and safely tighten or loosen MC4 connectors without damaging plastic housings — a must-have for both assembly and maintenance.

6) Assembly & Unlocking Tool x1

Allows easy assembly and disassembly of MC4 connectors, saving time and preventing connector damage during installations or repairs.

7) Locator Tools for MC4 and MC4-Evo 2 

Guarantee accurate alignment of contacts within the housing, eliminating the risk of misalignment that can cause system faults.

8) Test Plugs for MC4 and MC4-Evo 2

Confirm that both male and female connectors are in the optimal position, ensuring the best electrical contact and preventing system inefficiencies.

9) Sealing Caps for MC4 (Plugs & Sockets) – 10 each

Protect unconnected MC4 terminals from dust, moisture, and damage during installation or storage, maintaining system integrity.

Industry Standard: Designed specifically for the original MC4 and MC4-Evo 2 connectors, ensuring compatibility and compliance.

Time-Saving: Streamlines PV connector installation, reducing the risk of improper crimping and torque errors.

Professional Quality: Trusted by solar professionals worldwide for its reliability and durability.

Versatile Applications: Perfect for installations in caravans, RVs, marine systems, off-grid solar setups, tiny homes, and industrial projects.

Enhance your solar system’s safety and efficiency by equipping your team with the Stäubli MC4 Professional Toolset — the essential toolkit for every solar installer aiming for top-quality results. Order yours today and make every connection count!