Y MC4 Connector, 4-to-1 Solar Branch Cable

Name: Y MC4 Connector 4-to-1 - ETEK Electri
SKU: PV-EKY4

The y mc4 connector PV-EKY4 from ETEK merges four solar panel strings into a single output. Rated for 1000V DC and 30A, with IP67 protection when mated and snap-in locking, it offers a compact, reliable branching solution for photovoltaic installations.

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ModelPV-EKY4

CategoryPv Connectors, Solar Power Connectors

AvailabilityIn stock

CE & TUV certified
Worldwide shipping
OEM & ODM support

Product Features of Y MC4 Connector

The PV-EKY4 y mc4 connector is a 4-to-1 branch cable designed for safe, compact string combining in PV systems. It is also known as a 4 to 1 mc4 connector.

Φ4 mm connector system: compatible with standard 4 mm solar plug connectors.
1000V DC (IEC) rated voltage with a 30A rated current.
6 kV (50 Hz, 1 min) test voltage for reliable insulation strength.
IP67 when mated, IP2X when unmated: protected against dust and temporary immersion once connected.
Low contact resistance of 0.5 mΩ for minimal power loss at each plug connection.
Snap-in locking system for fast, secure installation.
Safety class II with UL 94 V0 flame class insulation (PC/PA).
Wide temperature range: -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 degree 5, for corrosion resistance.

Commercial Applications of Y MC4 Connector

The y mc4 connector is used wherever several PV strings must be combined into one output line, reducing the number of cables running to the inverter or combiner point. Its 1000V DC rating and IP67 sealing make it suited to commercial rooftops, ground-mounted arrays and outdoor solar installations.

Applications & Use Cases

Commercial and industrial rooftop solar: merge up to four strings into a single feed to simplify cabling. A y connector for solar panel wiring keeps the layout tidy and reduces extra junction hardware.
Ground-mounted solar farms: combine string outputs close to the panels with a weather-sealed mc4 y type connector.
Solar system expansion: add more panels to an existing array using a modular mc4 y branch instead of re-cabling.
Off-grid and hybrid installations: connect multiple panel groups to a charge controller or inverter input.
Outdoor and coastal environments: salt mist tested to IEC 60068-2-52, severity degree 5.

Technical Specifications of Y MC4 Connector

The table below lists the full technical data of the PV-EKY4 y mc4 connector.

Parameter	Value
Product model	PV-EKY4
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, 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 Y MC4 Connector

The PV-EKY4 y mc4 connector has an overall length of 460 mm. One side carries four parallel connector branches that join at a central molded junction body, and the other side is a single cable lead with one connector. The drawing shows both versions: the four-branch side with female sockets and the four-branch side with male plugs, each paired with a single opposite-gender connector.

Dimensions and Wiring of Y MC4 Connector

In wiring, the four branches are connected in parallel into the single output. Make sure the combined current of the connected strings does not exceed the 30A rated current, and that the system voltage stays within the 1000V DC rating.

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