MC4 Y Connector Branch Cable, 1000V DC 30A

The PV-EKY2 mc4 y connector merges two photovoltaic strings into one output through a compact branch cable. Rated at 1000V DC and 30A with IP67 protection when mated, it gives solar installers a reliable, snap-in way to simplify parallel wiring.

Ratings: 1000V DC (IEC), 30A, 6kV test voltage
Protection: IP67 mated, IP2X unmated
Standard: IEC 60068-2-52

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ModelPV-EKY2

CategoryPv Connectors, Solar Power Connectors

AvailabilityIn stock

CE & TUV certified
Worldwide shipping
OEM & ODM support

Product Features of MC4 Y Connector

The PV-EKY2 is a purpose-built mc4 y connector that splits one Φ4mm photovoltaic trunk into two branch leads, or joins two inputs into one. It works as a practical mc4 connector 2 in 1 solution, replacing extra junction hardware and keeping string wiring short and tidy.

High electrical rating: 1000V DC (IEC) and 30A, verified with a 6kV (50Hz, 1min.) test voltage.
Dust and water protection: IP67 when mated and IP2X when unmated.
Low contact resistance: 5mΩ across the plug connectors, using brass/tin-plated copper alloy contacts.
Secure snap-in locking: a Φ4mm connector system with a snap-in lock for fast, firm field mating.
Safe insulation: PC/PA insulation material, safety class II and UL-94-V0 flame class.
Wide temperature window: -40°C to +90°C (IEC), -40°C to +75°C (UL), with an upper limiting temperature of +105°C (IEC).
Corrosion resistance: salt mist spray test, degree of severity 5, to IEC 60068-2-52.

Commercial Applications of MC4 Y Connector

Installers choose this mc4 y connector wherever two PV strings or modules must feed a single cable run. A 2 to 1 mc4 connector layout reduces the number of home-run cables, saves labor and keeps array wiring consistent across large commercial projects.

Applications & Use Cases

Residential rooftop arrays: combine two short strings into one lead before the inverter or DC isolator.
Commercial and industrial rooftops: cut cable length and connection points across multi-string layouts.
Ground-mounted solar farms: tidy parallel branches at the module rows with a reliable y connector solar panel link.
System expansion and retrofits: add a second string to an existing run without re-cabling.

Design note: in a parallel arrangement, the combined current of both branches flows through the trunk lead, so keep the total within the 30A rating.

Technical Specifications of MC4 Y Connector

The table below lists the verified electrical, mechanical, and environmental data for this mc4 y connector, which follows IEC 60068-2-52. Each y branch connector in the PV-EKY2 series shares the same ratings.

Parameter	PV-EKY2 value
Connector system	Φ4mm
Rated voltage	1000V DC (IEC)
Rated current	30A
Test voltage	6kV (50Hz, 1min.)
Ambient temperature range	-40°C … +90°C (IEC); -40°C … +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-V0
Salt mist spray test, degree of severity 5	IEC 60068-2-52

Dimensions and Wiring of MC4 Y Connector

The drawing shows both views of the mc4 y connector, with an overall length of 280mm and a 172mm span between the connector bodies. Dimensions are measured by hand and are for reference only.

Dimensions and Wiring of MC4 Y Connector

Wiring principle: the single connector on one end is the trunk, and the two connectors on the opposite end are the branches. Connect the branches to the two PV leads of matching polarity and the trunk carries the combined parallel current. Always mate male to female connectors and confirm the snap-in lock has clicked.

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