Stäubli Electrical Connectors MC4 PV-AZS4 E - Abzweigstecker (320.197)

The Stäubli MC4 PV-AZS4 E branch connector stands apart from typical solar connectors through its MULTILAM contact technology, which ensures consistently low contact resistance and high current-carrying capacity even under harsh environmental conditions. This 2-to-1 branch connector is engineered for photovoltaic systems where reliable parallel connections are critical, offering a compact, touch-safe design that simplifies installation while meeting stringent international standards.

Highlights

• MULTILAM contact system for superior electrical performance and durability
• Rated for up to 1500 V DC (UL) and 1000 V DC (TÜV), with 39 A current rating
• IP67 / IP68 protection when mated, suitable for outdoor and submerged applications
• Wide operating temperature range from -40 °C to +85 °C (max 105 °C)
• Compatible with 4 mm² to 6 mm² (12 AWG – 10 AWG) cables
• Snap-in locking mechanism with ≥100 mating cycles

In daily use

Installers appreciate the PV-AZS4 E for its straightforward, tool-free locking that reduces assembly time and eliminates the risk of incomplete mating. The branch connector’s robust PPO insulation and tinned copper contacts resist UV radiation, ammonia, and salt mist, making it ideal for rooftop, ground-mount, and floating solar installations. Its compact form factor allows neat cable management, while the high protection rating ensures long-term reliability even in wet or dusty environments.

Full specifications

• Connector type: MC4 branch connector, 2-to-1 configuration
• Rated voltage: 1000 V DC (TÜV), 1500 V DC (UL)
• Rated current: 39 A (for 4/6 mm² cables)
• Contact system: MULTILAM technology
• Protection degree (mated): IP67 / IP68 (1 m, 1 h)
• Pollution degree: 3
• Overvoltage category: CAT III
• Insulation material: PPO (Polyphenylene Oxide)
• Contact material: Tinned copper
• Flammability rating: UL94-V0
• Ambient temperature range: -40 °C to +85 °C
• Max operating temperature: 105 °C
• Cable cross section: 4 mm² – 6 mm² (12 AWG – 10 AWG)
• Safety class: Class II
• Approvals: TÜV Rheinland, UL, JET, CQC
• Locking system: Snap-in
• Mating cycles: ≥ 100
• Contact resistance: < 0.2 mΩ

Final note

For solar professionals who demand dependable parallel connections, the Stäubli MC4 PV-AZS4 E delivers proven performance backed by decades of connector engineering expertise.