We believe in a bright and stable future

we are here

Malujiao Industrial Zone,Beibaixiang Town,Yueqing ,Zhejiang,China 325603

our contacts


WA: +86 15757872011

in socials


A solar diode MC4 connector for positive (+) solar input. Used to prevent batteries from backfeeding to panels at night, and to optimize systems with multiple solar panels wired in parallel.

  • Rainproof,moisture-proof,dust-proof and durable,waterproof grade IP67,high Heat
  • Prevent reverse current
  • Operating Temperature: -40°F to 194°F (-40°C to 90°C)
  • Contact Material: Silver-plated copper
  • Material selection
  • High-quality diodes

Stable Delvery Time

Technical Support

2 Years

MOREDAY MC4 Connector with Diode

MOREDAY MC4 Connector with Diode

Solar mc4 connectors with diode are available in 10A, 15A and 20A. Compatible with MC4 photovoltaic fuses. Easy and quick to install, suitable for harsh outdoor environments. Diodes pass current in one direction, so current from the solar panel flows toward the battery (forward bias) and prevents flow from the battery to the solar panel (reverse bias), preventing the solar panel current from flowing backwards and causing a hazard.

Key Characteristics

MC4 Connector with Diode High Efficiency

MC4 Connector with Diode High Efficiency

The MC4 connector with diode ensures optimal performance and minimal power loss, thanks to its robust construction and high-quality materials.

Superior Compatibility

Compatible with a wide range of photovoltaic systems, ensuring seamless integration with your existing infrastructure.

mc4 connector with diode Superior Compatibility
mc4 connector with diode Enhanced Durability

Enhanced Durability

Engineered to withstand extreme weather conditions, providing reliable performance in both high and low-temperature environments.

It is connected by pressing, and the male and female heads are equipped with self-locking structure, which can be opened and closed freely.

Secure Connection

The connector’s secure locking mechanism guarantees a safe and stable electrical connection, reducing the risk of disconnection or power loss.

The diode provides the functions of rectifier circuit, detection circuit and voltage stabilizing circuit. It only allows one-way current to pass through and blocks the reverse direction.

mc4 connector with diode Secure Connection

Our Advantages

Top-Quality Manufacturing

Our connectors are manufactured in our state-of-the-art factory, ensuring top-tier quality control and performance.

Certified Excellence

Our products come with CE and TÜV certifications, assuring you of their safety and reliability.

Timely Deliveries

We prioritize on-time delivery, ensuring your projects stay on schedule and avoid costly delays.

OEM Capability

We offer OEM services to produce connectors with your company’s brand, giving you the flexibility and customization you need.

Project Applications

Residential Solar Systems: Ideal for residential solar installations where efficiency and durability are crucial.

Commercial Solar Projects: Perfect for larger commercial solar installations that demand high-quality components for optimal performance.

Industrial Solar Applications: Suited for industrial-scale solar projects where reliability and secure connections are vital.

Why Choose Us?

Unmatched Quality

Our MC4 connectors with diode are produced using high-grade materials and advanced manufacturing processes, ensuring they meet and exceed your quality expectations.

Factory-Direct Pricing

By choosing us, you benefit from factory-direct pricing, offering you competitive rates without compromising on quality.

Global Reach

With a strong presence in markets around the world, including Mexico, Poland, Myanmar, and more, we understand the unique needs of various global markets.

Customer-Centric Service

We focus on building long-term partnerships with our customers by providing exceptional service and support throughout your project lifecycle.




Connector System


Rated Voltage

1000V DC(lEC)¹

Rated Current


Test Voltage


Temperature Range

-40℃-+90°(lEC) -40℃-+75℃(UL)

Upper Temperature Limit

+105℃ (lEC)

Degree of Protection




Comtact Resistance of Plug Connectors


Safety Class

Contact Material

Messing,verzinnt Copper Alloy,tin plated

Insulation Mtacenal


Locking System





IEC 60068-2-52

popular questions


1. What is an MC4 connector with diode used for?

The MC4 connector with a diode is used in solar installations to prevent reverse current flow, which can occur when one or more solar panels are shaded. The diode helps maintain system efficiency by allowing electricity to flow in one direction while blocking any backflow.

2. How does the diode in the MC4 connector improve solar panel performance?

The diode prevents the solar panel from acting as a load when it's shaded, which can otherwise reduce the overall system performance. This protection ensures that even if part of a solar array is shaded, the remaining panels can continue operating efficiently.

3. Are your MC4 connectors with diode weather-resistant?

Yes, our MC4 connectors with diode are designed to be weather-resistant. They are built to withstand extreme temperatures, moisture, and UV exposure, ensuring reliable performance in various outdoor environments.

4. How can I ensure that the MC4 connectors with diode I purchase are genuine and of high quality?

You can ensure the authenticity and quality of our MC4 connectors with diode by purchasing directly from us or authorized distributors. Our products are CE and TÜV certified, which guarantees their safety and reliability.

5. What should I consider when choosing an MC4 connector with diode for my solar project?

When selecting an MC4 connector with a diode, consider factors such as the quality of materials, compatibility with your solar panels, certification standards, and the manufacturer's reputation. Our connectors are manufactured to the highest standards, ensuring optimal performance and compatibility.

#side-panel.side-panel .side-panel_sidebar {padding: 7.7% 11.3% 7.7% 11.3%;}

Ask for Free Quote Now

We can provide Free Standard samples for you to check the quality and printing options.

Get Free Sample Now!

Free standard sample can be provided for your evaluation according to your requirements.