MC4 Y Branch Connectors Pair - 2 in 1 Solar Panel Cable Connector

Suntree 2-to-1 MC4 Y Branch Connector

The Suntree 2-to-1 Y branch connector joins two solar panels or strings in parallel so they run into a single input on your charge controller or inverter. Wiring in parallel keeps the voltage the same and adds the currents together. That means fewer cable runs back to your gear and a tidier install.

The housing is UV-stable, flame-retardant PPO and the contacts are tinned copper, so it’s made for years out in the weather. It comes as a pair: one 2-male-to-1-female and one 2-female-to-1-male, so you can do both the positive and negative sides.

Specifications

Feature	Details
Connector type	MC4 Y-branch, 2-to-1 (sold as a pair, positive and negative)
Rated voltage	1000V to 1500V DC (check the label on your unit)
Rated current	Up to 30A total
Contact material	Tinned copper
Insulation	PPO, flame-retardant, UV-stable
Protection rating	IP67
Cable size	2.5mm², 4mm² and 6mm² PV cable
Operating temperature	-40°C to +85°C
Flame class	UL94-V0
Locking	Snap-lock with release clips

Where to use it

Use it on off-grid systems, hybrid inverter PV inputs, rooftop and ground-mount arrays, and in caravans, motorhomes and tiny homes where you want two panels on one controller input.

How to install it

1. Make sure the panels are covered or isolated before you start. A panel in daylight is always live.
2. Plug the two positive panel leads into the positive branch connector, then the two negative leads into the negative branch connector. Don’t mix them up.
3. Push each connector in until it clicks and locks.
4. Run the single output from each branch to your charge controller, inverter or combiner box.
5. Keep the combined current under 30A and inside what your controller or inverter input can take.
6. Support the cables near the connectors so they aren’t under strain or bent tightly.
7. Use an MC4 spanner to unlock and disconnect. Never pull them apart under load.

Note on fusing: With only two strings in parallel, you usually don’t need string fuses. The fault current from one string generally can’t exceed the other panel’s reverse current rating. Check your panel datasheet to be sure, and if you’re adding a third string later, use the 3-way connector with string fusing instead.