The Original MC4 DC PV connector offers a unique high contact quality.

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the benchmark beyond question

There’s only one Original MC4 PV connector

The Original MC4 is the world’s leading PV connector designed and engineered by our in-house experts more than 20 years ago. As the most installed PV connector worldwide, the MC4 continues to set new industry benchmarks thanks to our drive for excellence and innovation.

Stäubli connectors are crafted with Swiss precision, offering optimal efficiency and long-term performance for small to large-scale PV systems. When selecting connectors, trust the original to rest assured that your operations will be safe and perform sustainably for decades to come.

Important to know

Invented by Stäubli engineers in Switzerland
Designed and manufactured meeting highest quality requirements according to current standards and EU specifications
MC4 is a protected trademark of Stäubli

Advanced contact technology

The core of the Stäubli PV connectors is the innovative MULTILAM contact technology. This unique contact principle stands out due to multiple contact points that improve connection quality and energy transfer thanks to its constant spring pressure and unique design. This results in constantly low contact resistance, ensuring safe and long-life operation and reduces downtime and service cost significantly.

This differentiating contact technology minimizes the risks of power loss, downtimes, hotspots, or even a fire that could lead to enormous reconstruction costs. The original Stäubli PV connectors of the MC4 connector portfolio are very stable in terms of temperature and show no heat accumulation.

Minimize risk. Maximize return.

By selecting the premium-quality MC4 PV connector of Stäubli for your PV projects, you are creating a solid foundation for success while minimizing risks and ensuring efficiency and profitability.

Constantly low contact resistance of the PV connectors is key for efficient operation and safe energy feed-in. Increasing contact resistance, e. g. due to deficient material characteristics, can weaken the efficiency of the entire PV system.

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Stäubli quality tool case and tool belt

Safe and professional connector installations

The Stäuli tool case is a comprehensive set of all needed tools specifically designed for professional installation of the entire Original MC4 product family. By using these Stäubli tools for your installation, you can guarantee reliable and efficient performance in the long term. The tools are tested and verified by Stäubli. Additionally, to the tool case there is also the option of an additional very handy tool belt.

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eBOS solutions

Effective DC wiring

eBOS stands for electrical Balance Of Systems. All electrical components of the DC side of the system except the inverter and module form the eBOS application. As the lifelines of a PV system, the eBOS system ensures that the power generated by the modules is gathered and transferred efficiently, reliably and safely.

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Bankability - a matter of trust

Gain the trust of investors and build the foundation for long-term economic growth.

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Cross-Connections

Gain knowledge in optimizing your PV system and avoiding technical failures caused by cross-connecting components.

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MC4-Evo ready

The crimp-free MC4-Evo ready with snap-in technology is mateable with the Original MC4 product portfolio.

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Curious to know more?

To find out more information about our products and services, send us a message and one of our PV experts will get back to you. We look forward to assisting you.

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the benchmark beyond question

There’s only one Original MC4 PV connector

Important to know

Advanced contact technology

Minimize risk. Maximize return.

Safe and professional connector installations

Effective DC wiring

Curious to know more?

The Original MC4 product line

Cable couplers

Branch Connectors

Panel Receptacles

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