Stäubli Electrical Connectors MC4 PV-AZB4 E - Abzweigstecker

The MC4 PV-AZB4 E is a 4-to-1 branch connector engineered for high-current photovoltaic installations, delivering reliable parallel connections with a rated voltage of 1500 V DC (IEC). Its MULTILAM contact technology ensures low contact resistance and long-term stability, making it a cornerstone for modern solar arrays.

Advantages

The connector's IP67 protection when mated and IP2X when unmated guarantees safe operation in harsh environments, from dusty deserts to rainy rooftops. The use of tin-plated copper contacts and PPE/PA insulation provides excellent corrosion resistance and mechanical durability. With a wide temperature range of -40 °C to +85 °C and an upper limiting temperature of 115 °C, it withstands extreme thermal cycling. Its compatibility with both Original MC4 and Evo 2 connectors offers flexibility in system design and retrofitting.

Suitable for

• Parallel connection of four PV strings to a single input in combiner boxes or inverters
• Utility-scale solar farms requiring high current handling up to 39 A (6 mm² cable)
• Residential and commercial rooftop systems demanding reliable, weatherproof connections
• Installations where TÜV Rheinland and UL certifications are mandatory

Key specifications

• Connector type: MC4 (Original & Evo 2 compatible)
• Configuration: 4 inputs, 1 output (4-to-1 branch)
• Rated voltage: 1500 V DC (IEC), 1000 V DC (UL)
• Rated current: 30 A (4 mm²), 39 A (6 mm²)
• Contact system: MULTILAM technology
• Contact material: Tin-plated copper
• Insulation material: PPE/PA (Polyphenylene Ether / Polyamide)
• Protection degree: IP67 (mated), IP2X (unmated)
• Ambient temperature range: -40 °C to +85 °C
• Upper limiting temperature: 115 °C
• Cable cross-section: 4 mm² - 6 mm² (12 AWG - 10 AWG)
• Connection type: Crimp
• Safety class: II
• Pollution degree: 3
• Overvoltage category: III
• Flammability rating: UL94-V0
• Certifications: TÜV Rheinland (IEC 62852), UL (UL 6703)

Recommendations

For optimal performance, use with Stäubli MC4 crimp contacts and appropriate cable sizes. Ensure proper crimping tools are used to maintain IP67 sealing. This connector is ideal for new installations and upgrades where high reliability and compliance are critical.