Y Connector MC4, 1-to-3 Solar Branch Cable

Name: Y Connector MC4 1-to-3 Y-Branch Cable - ETEK Electri
SKU: PV-EKY3

The PV-EKY3 Y connector MC4 branch cable splits one solar circuit into three Φ4mm connections. Rated for 1000V DC and 30A, with IP67 protection when mated, it gives PV installers a compact, weather-resistant way to combine panels and strings.

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ModelPV-EKY3

CategoryPv Connectors, Solar Power Connectors

AvailabilityIn stock

CE & TUV certified
Worldwide shipping
OEM & ODM support

Product Features of Y Connector MC4

The PV-EKY3 Y connector MC4 is built around a molded Y body with one common trunk and three branch ends, so a single cable run replaces separate splices. Designed as an MC4 Y branch connector, it brings these datasheet-verified features:

Φ4mm connector system for standard PV plug-in connections.
1000V DC (IEC) rated voltage and 30A rated current, with a 6kV (50Hz, 1 min) test voltage.
IP67 when mated and IP2X when unmated, for outdoor weather and dust protection.
Low contact resistance of 0.5mΩ across the plug connectors for minimal power loss.
Tin-plated copper alloy (brass) contacts for stable conductivity and corrosion resistance.
PC/PA insulation with UL 94 V-0 flame class and safety class II.
Snap-in locking system for fast, secure mating on site.
Wide temperature range of -40°C to +90°C (IEC) and -40°C to +75°C (UL), with an upper limiting temperature of +105°C (IEC).
Salt mist tested to IEC 60068-2-52, severity 5, for coastal and humid installations.

Commercial Applications of Y Connector MC4

For EPC contractors, installers, and distributors, the Y connector MC4 simplifies string combining on rooftop and ground-mounted PV systems. Fewer home-run cable runs and splice points mean faster installs and a cleaner, more serviceable layout.

Applications & Use Cases

Parallel string combining: use the PV-EKY3 as a 3 way MC4 branch connector to join three PV panels or strings into one output run.
Residential and commercial rooftops: reduce cable clutter where several short strings feed a single inverter input.
Utility-scale and ground-mount arrays: cut the number of long cable runs back to the combiner or inverter.
Coastal and humid sites: salt-mist-tested construction (IEC 60068-2-52, severity 5) suits harsh outdoor environments.
System expansion and retrofits: add strings to an existing circuit without re-cabling the original run.

Because parallel branches add their currents, always check that the combined current stays within the 30A rating and that string protection follows local code.

Technical Specifications of Y Connector MC4

The table lists every rated value published for the PV-EKY3 Y connector MC4, an MC4 connector 3 in 1 branch cable salt-mist tested to IEC 60068-2-52.

Parameter	Value
Connector system	Φ4mm
Rated voltage	1000V DC (IEC)
Rated current	30A
Test voltage	6kV (50Hz, 1 min)
Ambient temperature range	-40°C to +90°C (IEC); -40°C to +75°C (UL)
Upper limiting temperature	+105°C (IEC)
Degree of protection, mated	IP67
Degree of protection, unmated	IP2X
Contact resistance of plug connectors	0.5mΩ
Safety class	II
Contact material	Brass (Messing), tin-plated copper alloy
Insulation material	PC/PA
Locking system	Snap-in
Flame class	UL 94 V-0
Salt mist spray test, degree of severity 5	IEC 60068-2-52

Dimensions and Wiring of Y Connector MC4

The Y connector MC4 measures 300 mm overall, with a 197 mm dimension and a 143 mm branch spread, as marked on the drawing. The datasheet notes that dimensions are measured by hand and are for reference only.

Dimension	Value (mm)
Overall length	300
Second vertical dimension (see drawing)	197
Branch spread	143

Wiring: each cable has one trunk connector and three branch connectors. Wired as a 3 to 1 MC4 connector, three PV inputs plug into the branch ends and combine into the single trunk output. The drawing shows two mirrored layouts of the Y3 body, so confirm the trunk and branch connector arrangement you need before ordering.

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