MC4 connectors - Highly reliable connectors for photovoltaic systems
If you need safe and durable connections in PV systems, MC4 connectors are the first choice. These solar connectors ensure a reliable electrical connection between solar modules, inverters and PV cables. Thanks to their robust design, IP65/IP68 protection class and proven Stäubli technology, EMC-direct connectors are suitable for both large-scale commercial projects and private solar installations. Discover our range!
100x PV-KST4/6X-UR Stecker + 100x PV-KBT4/6X-UR...
Stäubli MC4 Stecker PV-KST4-EVO 2A/10X S
Stäubli MC4 Buchse PV-KBT4-EVO2A/10X
Stäubli MC4 Buchse PV-KBT4-EVO2A/6X
Stäubli MC4 Stecker PV-KST4-EVO 2A/6X
Stäubli MC4 Stecker PV-KST4/6X-UR
Stäubli MC4 Buchse PV-KBT4/6X-UR
Weidmüller Push-in PV stick set of 100
Stäubli assembly wrench for MC4-Evo ready
Stäubli MC4 EVO READY Set plug + socket
Crimp-free Stäubli MC4-Evo ready socket
Crimp-free Stäubli MC4-Evo ready connector
PV-EVO-PST Test pin MC4-EVO2
Stäubli branch plug PV-AZS4-EVO 2-UR
Stäubli branch bushing PV-AZB4-EVO 2-UR
Stäubli MC4-EVO2/6II-UR set plug + socket
Mounting wrench for solar connector MC4 EVO2
Stäubli MC4-EVO2/6I-UR set plug + socket
Stäubli MC4 EVO2/10IIUR set plug + socket
Stäubli MC4 4/6IIUR set plug + socket
Stäubli MC4 4/6IUR set plug + socket
Stäubli MC4 4/10IIUR set plug + socket
Phoenix Contact Sunclix Socket
Phoenix Contact Sunclix Connector
PV-MS Stäubli assembly wrench set
Stäubli MC4 PV-KBT4-EVO 2/10II-UR
Stäubli MC4 socket PV-KBT4/10II
Stäubli MC4 connector PV-KST4-EVO 2/10II-UR
Stäubli MC4 connector PV-KST4/10II
Stäubli MC4 connector PV-KST4/6II-UR
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The right connector system for every project: MC4, Phoenix Contact Sunclix & Weidmüller PV-Stick in comparison
The requirements for modern photovoltaic systems are constantly increasing. That is why we offer you different connector types so that you can select the right PV solar connector for every project, tailored to the conductor cross-section and the system voltage.
Stäubli MC4 connectors are the global standard for photovoltaic connectors and cover a broad portfolio for almost all common PV applications - from classic crimp solutions to crimp-free, tool-free variants. Thanks to proven MULTILAM contact technology, high current carrying capacity and variants for system voltages of up to 1,500 V, you will find the right connector for every project - tailored to the conductor cross-section, cable diameter and system concept.
| Property | Stäubli MC4 | Stäubli MC4-Evo 2 | Stäubli MC4-Evo ready |
| Area of application | The proven standard for standard PV systems. |
High-end solution for the highest current loads. |
The quick connection for efficient installation. |
| Assembly type | Crimping |
Crimping |
Crimp-free |
| Rated voltage | 1000 V / 1500 V DC |
1500 V DC |
1500 V DC |
| Rated current | Up to approx. 30 A (depending on cross-section) |
Up to 45 A / 53 A (extremely resilient) |
Up to 30 A |
| Cable cross-section | 2.5 / 4 / 6 / 10 mm² |
4 / 6 / 10 mm² |
4 / 6 mm² |
| Contact technology | MULTILAM Standard |
MULTILAM of the latest generation |
MULTILAM & spring clamping |
| Protection class (mated) | IP65, IP68 (1h/1m) |
IP65, IP68 (1h/1m) |
IP65, IP68 (1h/1m) |
| Special feature | The world's most widely used plug. |
Highest voltage and current values, Evo 2 housing design. |
No crimping tool required, enormous time saving during installation. |
Why solar plugs are indispensable for PV systems
MC4 connectors have established themselves as the standard for PV systems in the solar industry. They offer numerous advantages that make the installation and operation of solar modules significantly more efficient and safer.
Advantages at a glance:
Simple assembly & disassembly
Our PV connectors have a snap-in system that allows them to be plugged together quickly and securely. This significantly reduces assembly time and sources of error.
Safe protection against accidental contact
Thanks to the IP65/IP68 protection class, the solar connectors and sockets are protected against water and dust. In addition, the angled design prevents accidental contact with the contacts.
Durability & high load capacity
The MC4 plugs in our range are designed for rated voltages of up to 1500 V and rated currents of up to 53 A (depending on the cross-section). They are UV-resistant, temperature-resistant and corrosion-protected.
Flexibility
As a global industry standard, Stäubli MC4 connectors cover conductor cross-sections of 1.5-10 mm² and enable flexible cabling in small to large PV systems.
Get high-quality solar connectors now: Our PV solar connectors ensure a durable, safe and reliable connection between your modules. Order today!
Technical properties of the MC4 connector
Solar connectors are characterized by precise workmanship, high-quality materials and clear technical specifications that ensure a secure connection in solar systems.
Technical highlights:
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Cross-section & cable diametermC4 connectors are designed for different conductor cross-sections (typically 2.5-6 mm², sometimes up to 10 mm²) and defined cable outer diameters, depending on the version; the manufacturer's specifications are decisive.
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Materialhigh-quality, UV-resistant plastic and tin-plated copper contacts ensure maximum conductivity and durability.
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Protection classiP65/IP68 guarantees protection against dust and temporary to permanent exposure to water.
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Rated voltage & currentconnectors are designed for DC up to 1100 V or 1500 V and rated currents between 30 A and 53 A.
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Assembly & crimping technologythe contacts are crimped and the plugs can be joined together using a lockable MC4 plug connection can be brought together. Crimping tools or EVO2 unlocking tools increase safety and precision.
Assembly and processing of MC4 connectors
The correct installation of plugs for photovoltaic systems is crucial for a secure, long-lasting connection. With the right tools, plugs and sockets are easy to install.
This is how you proceed:
- Only use original Stäubli MC4 or compatible connectors for maximum safety.
- Ensure the correct conductor cross-section (4 mm² or 6 mm²) and the rated current.
- Calibrate crimping tools regularly to ensure reliable plug connections.
EMC-direct: Certified MC4 connectors for new systems or retrofits
At EMC-direct, we know that companies and solar installers place the highest demands on the safety, quality and reliability of their PV components. Our MC4 connectors meet these requirements and offer you numerous advantages for professional photovoltaic systems - see for yourself!
- Authorized Stäubli distributor
- Extended product selection on request
- Advice from experts with many years of PV experience
- Fast delivery & attractive graduated prices
- Certified quality for maximum safety
Rely on professional MC4 connectors for your solar modules - ideal for new systems or retrofitting existing systems, they guarantee maximum efficiency and safety. Order now and benefit from tested original and compatible solar connectors!