Stäubli Electrical Connectors

Photovoltaic Connectors and Custom Junction Boxes for Solar Power Facilities

leadStäubli Electrical Connectors, part of the Stäubli Group, is a Swiss-based leading manufacturer of electrical connectors and contact systems, providing innovative solutions for demanding applications.

High-quality photovoltaic connectors and custom junction boxes

Stäubli Electrical Connectors is a pioneer in photovoltaics and a global leader in connector and junction box solutions for PV installations.

MC3 was the world's first 'plug-and-play' photovoltaic connector, designed and developed to dramatically streamlined PV module installation practices. The MC3's successor, our MC4 connector, is a market leader and can be found on nine of the top ten PV module producers' products.

Connector systems for solar installations

The components of the MC connector system for photovoltaics are designed to allow time-saving, safe serial and parallel wiring of modules for building integrated and free-standing solar installations. Our junction boxes meet the needs for polycrystalline, thin-film and BiPV modules worldwide.

The new Multifunction PV-JB/MF is a versatile junction box that is capable of integrating system monitoring solutions such as power optimisers for better overall system performance.

Photovoltaic connector systems for solar energy generation

The MC4-EVO 2 is the latest addition to the MC4 PV connector range and has just been launched by Multi-Contact on the global market.

The new connector has been approved for 1,500VDC (IEC, TÜV) and 1,000VDC (UL).

The connector is highly efficient, currents of up to 45A can be transmitted with a cable cross section of 4mm² / 12AWG, while 53A can be transmitted with a cable cross section of 6mm² / 10AWG, and 69A can be transmitted with a cable cross section of 10mm² / 8AWG.

The sustainable and durable PV connector ensures high-performance with optimal results for operators thanks to its low power loss. MC4-EVO 2 is compatible with the entire MC4 range and meets the requirements for NEC 2011.

In addition the MC4-EVO 2 and MC4-EVO 3 series have entered the Japan Electrical Safety and Environment Technology Laboratories (JET) component database.

This is an important development for Stäubli, as it allows Stäubli Electrical Connectors connector technology to be used in applications in Japan.

Stäubli Electrical Connectors, a safe and reliable connection

Stäubli Electrical Connectors builds on more than 50 years of engineering and design experience to continually break new ground in the field of advanced contact technology.

The Stäubli Electrical Connectors product range includes interconnection systems for the most demanding applications in aerospace, medical, robotics, solar energy, general industry and test and measurement.

Our plugs and sockets are designed for high-performance, high mating cycles, low insertion and extraction forces, and ideally suited for low and high current applications. Stäubli Electrical Connectors produces high-quality, precisely engineered products that are certified to ISO 9001 standards.

Contact Details

Multi-Contact AG
Stockbrunnenrain 8
CH – 4123 Allschwil
+41 (61) 306 5555
+41 (61) 306 5556

Available White Papers


MULTILAM Technology: Unlimited Possibilities 18 April 2017 MULTILAM are specially formed, resilient copper-alloy contact elements that are silver or gold plated depending on their application, and are float mounted in a groove.


Catalogue for Installers MC3 and MC4 29 June 2015 This brochure published by Multi-Contact details the company's extensive range of plug connectors, including male and female PV-cable couplers, male and female PV-panel receptacles, PV-Branch plugs, and sockets.


Green Light for the Future: Ideas and Solutions for the Markets of Tomorrow 25 June 2015 Over the past 50 years Multi-Contact has grown into an internationally leading producer of electrical connector systems, and the company is now present on five continents. In this half century, the company has experienced a number of eventful phases.


Powerline: Round Connectors 24 April 2015 Multi-Contact, a Swiss-based leading manufacturer of electrical connectors and contact systems, has released a white paper about round connectors.