MC4 Y-Branch 3-to-1 Branch Joiner Solar Connector Pair
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Description
MC4 Y-Branch 3-to-1 Branch Joiner Solar Connector Pair
Streamline your solar panel installation and maximise power output with the MC4 Y-Branch 3-to-1 Branch Joiner Connector Pair. Designed to combine the output of up to three solar panels into a single string, this connector reduces wiring complexity and simplifies array expansion — ideal for both professional installers and DIY enthusiasts.
Key Features
IP67 Waterproof & Dustproof: Premium PC/PA insulation with UV-resistant construction, built to perform in all weather conditions including extreme heat and heavy moisture.
Plug-and-Play Installation: Industry-standard MC4 snap-in locking mechanism for rapid, secure, tool-free connection — reducing labour time during array integration.
Optimised Energy Transfer: Tin-plated copper alloy contacts with low contact resistance (0.5mΩ) minimise energy loss and maximise power transfer from array to inverter.
Parallel Configuration: Efficiently links three solar panel strings into a single conduit — ideal for expanding system capacity without complex custom junction boxes.
Safety Compliant: Meets rigorous international standards including IEC and TÜV certification for long-term electrical safety and reliability.
Specifications
| Contact Material | Copper Alloy, Tin Plated |
| Insulation Material | PC/PA |
| Rated Current | 17A (1.5mm²), 22A (2.5mm²), 30A (4–6mm²) |
| Rated Voltage | 1000V DC (IEC), 600V (UL) |
| Test Voltage | 6kV (50Hz, 1min) |
| Contact Resistance | 0.5mΩ |
| Degree of Protection (Mated) | IP67 |
| Degree of Protection (Unmated) | IP2X |
| Temperature Range | -40°C to +90°C (IEC), up to +105°C |
| Flame Class | UL94-V0 |
| Locking System | Snap-in |
| Safety Class | II |
| Connector System | Ø4mm |
| Salt Mist Spray Test | Severity Degree 5 (IEC 60068-2-52) |
Return policy
Our goal is for every customer to be totally satisfied with their purchase. If this isn't the case, let us know and we'll do our best to work with you to make it right.
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We will work quickly to ship your order as soon as possible. Once your order has shipped, you will receive an email with further information. Delivery times vary depending on your location.
Manufacturing
Our products are manufactured both locally and globally. We carefully select our manufacturing partners to ensure our products are high quality and a fair value.