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Staubli MC4 Solar Connectors
Staubli is the Swiss company behind the original MC4, the most installed PV connector in the world, with over 2 billion connectors in the field carrying more than half of global solar capacity. PowerStore carries genuine MC4 pairs and the certified tool kit.
The Original MC4, Not a Clone
MC4 connectors trace to the Multi-Contact 4mm contact system Staubli acquired in 2002, and no third party connector is certified compatible with them. Genuine pairs carry the full TUV and cULus paperwork inspectors expect.
- Rated 1500V DC and up to 50A on 10 AWG per UL 6703, file E343181
- IP68 rated mated, -40C to 85C ambient, UL94 V-0 housings
- MULTILAM contact system holds contact resistance under 0.25 milliohm
- Locking design requires a tool to open, in accordance with NEC 2023
- MC4 tool kit covers 14 to 8 AWG with the certified crimper
Explore Staubli Products
PowerStore lists the genuine MC4 male and female pair for 7.0 to 8.8mm PV wire and the MC4 tool kit with the approved crimper and wrenches. Branch connectors return as stock allows. Compare by SKU below.
Connector Support from PowerStore
Our team helps installers match connector versions to wire gauge, plan pair counts per array, and stay code compliant on connector intermatability with practical product guidance and fulfillment support.
Top Staubli FAQs with Jim White
Can I mix MC4 brands on one connection?
No. Staubli's safety instructions say never mate its connectors with another manufacturer's, and IEC and UL standards require same brand pairs. Cross mating risks corrosion, arcing, and fires, and the installer carries the liability.
Are genuine Staubli MC4 connectors worth it?
Yes. The original MC4 is certified to UL 6703 at 1500V and up to 50A, IP68 sealed when mated, and proven across more than half of the world's installed solar capacity.
Do I need the Staubli crimping tool?
For a certified connection, yes. Staubli approves only its own tools for assembly, and the MC4 tool kit covers 14 to 8 AWG. A generic crimper leaves you with an unapproved assembly.
Jim White is the CEO of PowerStore, a trusted provider of solar and storage solutions for over 15 years. Jim has helped professional installers design reliable solar systems nationwide.