Fibramérica

MC4 Series Branch Connector | Mod. FAB‑MC4B

High-efficiency solar branch connector for multiple PV panel strings | Mod. FAB‑MC4B

  • Description
  • Features
  • Technical Specifications
Description

The FAB‑MC4B Solar Branch Connector from Fibramérica is designed to simplify and enhance parallel connections in photovoltaic (PV) systems. Ideal for integrating multiple PV panel strings into a unified array, this robust connector supports various branch types including 2-1, 3-1, 4-1, 5-1, and 6-1 configurations.

Manufactured with high-grade PPO insulation and tin-plated copper contacts, the FAB‑MC4B offers excellent conductivity and durability. It supports up to 30A of current and is rated for 1000V under TUV and 600V under UL standards, making it reliable for a wide range of residential, commercial, and industrial solar installations.

Its keyed housing ensures secure mating, and the connector allows multiple cycles of plugging and unplugging without compromising performance. Thanks to its IP67 rating and UL94-V0 flame retardancy, the FAB‑MC4B is built to withstand harsh environmental conditions, ensuring long-term reliability and system safety.

Perfect for solar professionals, this connector is a vital component for optimizing solar panel layouts with safe and streamlined multi-string connections.

Features
  • Available in 2-1 to 6-1 branch configurations

  • High current support up to 30A

  • 1000V (TUV) / 600V (UL) rated voltage

  • IP67 rated for weatherproof performance

  • Flame retardant (UL94-V0)

  • Low contact resistance (<0.5mΩ)

  • PPO insulation and Ø4mm pins

  • Simple installation for on-site use

Technical Specifications
SpecificationDetails
ModelFAB‑MC4B
Available Branch Type2-1, 3-1, 4-1, 5-1, 6-1
Rated voltage1000V (TUV), 600V (UL)
Suitable current30A
Test voltage6kV (TUV, 50Hz, 1min)
Contact resistance<0.5mΩ
Ambient temperature-40℃~+85°C
Flame classUL94-V0
Safety classClass II
Insulation materialPPO
Contact materialCopper, Tin-plated
Pin dimensionsØ4mm
Degree of protectionIP67

FAB-MC4B, MC4 branch connector, solar splitter, 1000V solar connector, 30A PV branch, UL94-V0, PV multi-string

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