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


MDHL pv ac combiner box is an important part of the pv series string power generation system, which Is responsible for the string inverter and AC power distribution cabinet, or step-up transformer.

  • Use photovoltaic special components
  • IP65 protection is waterproof, dustproof, and UV-resistant
  • Suitable for a wide area
  • Flexible configuration
  • Cold rolled steel shell

Stable Delvery Time

Technical Support

2 Years

MDHL PV AC Combiner Box

MDHL PV AC Combiner Box

The MDHL PV AC Combiner Box is a crucial component in PV series string power generation systems, ensuring effective management and safety for string inverters and AC power distribution cabinets or step-up transformers. This highly adaptable product can integrate up to 8 PV inverters and is customizable to meet specific user requirements.

Key Features

MDHL PV AC Combiner Box High Voltage Capacity

High Voltage Capacity

Supports a maximum input voltage of 690V AC, accommodating the demands of high-capacity solar installations.

Robust Surge Protection

Equipped with a standard surge protector, it offers protection levels up to 3.2kV, ensuring system integrity against voltage spikes.

Durable Construction

Crafted from materials like hot-dip galvanized steel, stainless steel, or cold-rolled steel, the combiner box is designed to withstand harsh environmental conditions, boasting an IP55 protection rating.

Flexible Configuration

Can accommodate 4, 6, or 8 input channels with input currents up to 250A, making it suitable for a wide range of applications from 1 to 50KW PV string inverters.

MDHL PV AC Combiner Box Flexible Configuration
MDHL PV AC Combiner Box Advanced Safety Features

Advanced Safety Features

Includes features like breakers and an insulation pad to enhance safety and reliability in operational performance.


Efficiency Optimization

By consolidating multiple AC inputs, the MDHL PV AC Combiner Box minimizes energy loss and maximizes output, directly impacting your bottom line.

Cost Reduction

Streamline your installation and maintenance costs with a solution that is both easy to install and durable, reducing the need for frequent replacements.

Reliability Assurance

 With TUV, CE, and CB certifications, rely on a product that meets stringent quality and safety standards, ensuring peace of mind in your operations.

Why Choose Moreday?

Quality and Reliability

Adherence to rigorous quality management systems (ISO9001) and product certifications ensures top-tier product quality.

Customized Solutions

Tailor-made services to meet specific customer needs, backed by extensive technical expertise and customer-centric support.

Global Reach

With products exported to over 100 countries, Moreday has a robust global presence, providing reliable support and service worldwide.




Number Of Input Channels


Maximum Input Voltage

690V AC

Input Current Per Channel

0~250A ,0~200A ,0~100A

Highest Output Current


Un Rated Working Voltage Un

480V AC

Up Voltage Protection Level Up

≤ 3.2kV

Nominal Flow Capacity In (8/20μs)

20kA (Can be selected according to customer requirements)

Maximum Flow Capacity Imax (8/20μs)

40kA (Can be selected according to customer requirements)

Response Time


Box Protection Level


Maximum discharge current


Voltage protection level


Maximum continuous operating voltage


Number of poles


Structural features

Pluggable module

Protection level


Volume (width × height × depth)

900mm×1000mm×200mm ,700mm×1000mm×200mm ,800mm×1000mm×200mm

Box material


popular questions


1. What is an AC Combiner Box?

It is a device used in solar photovoltaic systems to combine the AC output from multiple inverters into a single output that can be connected to a power distribution cabinet, transformer, or the utility grid. This simplifies the wiring and enhances the safety and monitoring capabilities of solar installations.

2. How does the MDHL PV AC Combiner Box enhance system safety?

The MDHL is designed with robust surge protection, safeguarding the system against voltage spikes. Its durable construction with materials like hot-dip galvanized steel and an IP65-rated enclosure ensures protection against environmental elements and mechanical impacts.

3. Can the MDHL PV AC Combiner Box be customized for different project sizes?

Yes, the MDHL PV AC Combiner Box offers flexible configurations with 4, 6, or 8 input channels and can handle input currents up to 250A. This versatility allows it to cater to various project requirements, ranging from small installations to large-scale industrial setups.

4. What certifications does the MDHL PV AC Combiner Box hold?

The MDHL is certified under several international standards, including CE, CQC, and CB. These certifications affirm its compliance with safety, quality, and operational standards, making it suitable for global markets.

5. How does Moreday ensure the reliability of its combiner boxes?

Moreday leverages over a decade of expertise in solar technology, backed by ISO9001 quality management systems and numerous patents. Each combiner box undergoes stringent testing under various environmental conditions to ensure reliability and performance longevity.

6. Is the MDHL suitable for harsh environmental conditions?

Absolutely. The MDHL is tested for high and low temperature resilience and is designed to be waterproof, dustproof, and UV resistant, making it suitable for diverse and harsh environmental conditions across the globe.

7. What technical support does Moreday offer for the MDHL?

Moreday provides comprehensive technical support, including installation guidance, system design assistance, and after-sales service. Customers can also access detailed technical documentation and direct support from our experienced engineering team.

8. Can the combiner box handle the output from different brands of inverters?

Yes, the MDHL is designed to be universally compatible with various brands and types of inverters, ensuring seamless integration and optimal performance of the solar photovoltaic system.

9. What steps should be taken if there is an issue with the combiner box during operation?

Should any issues arise, customers are encouraged to contact Moreday's support immediately. We offer troubleshooting assistance, possible remote diagnosis, and quick resolution times to minimize any disruption to your solar system's operation.

#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.