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Commercial and Industrial PV

One protection list for the roof, the combiner and the building board

A warehouse or office roof has more strings, a combiner, and an AC output that lands on a board shared with the building. The device list is longer than a house, and the next building usually asks for the same part numbers.
Pronto coordinates combiners, DC breakers and fuses, surge devices and residual-current protection against that specification.
Commercial roof with photovoltaic modules beside an industrial site

How Pronto Supports Your Project

Product Matching

Compare protection and isolation products against inverter requirements, circuit ratings and installation conditions.

Samples & Small Orders

Evaluate selected products through samples and flexible quantities before purchasing for installation or repeat supply.

European Stock Support

Check availability in Poland and Hungary for selected products, with delivery options confirmed for your destination.

Where Our Products Fit

Explore the combiner, the DC protection and the AC output into the building board.
Commercial system layout

Related Products

DC Combiner Box

Strings brought to one output.

DC MCB

String and combiner output.

DC SPD

At the combiner or inverter.

AC MCB

Inverter output on the board.

What to Share With Us

Send the information available for your project so we can review product options and supply requirements.
Project Location & Application
System Voltage & Circuit Ratings
Inverter or Equipment Requirements
Product List & Quantities
Required Standards & Documentation
Delivery Destination & Schedule

Discuss Your Project Requirements

Share your product list, specifications or installation requirements. Our team can help review available options, supporting documents and delivery arrangements.
Pronto Solution Enquiry

What We Offer

One protection list for the roof, the combiner and the building board

A warehouse or office roof has more strings, a combiner, and an AC output that lands on a board shared with the building. The device list is longer than a house, and the next building usually asks for the same part numbers. Pronto coordinates combiners, DC breakers and fuses, surge devices and residual-current protection against that specification.

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Challenges

What shows up on a commercial roof

Fuse map for another inverter

String count and fuse rating copied from the last roof, not from this inverter input.

Indoor gear on an open roof

The combiner enclosure does not match the parapet, the cable entry or the weather on that roof.

The next order drifts

Each buyer picks a different curve, so two buildings that should match do not.

AC output, unchecked board

The inverter current is landed on a breaker and a board that were sized for the building load only.

Playbook

How a commercial roof is protected

  1. Count the strings into the inverter

    Inputs, current per string, and whether they meet in a combiner or at the inverter itself.

  2. Combiner and DC protection

    Fuse or DC breaker per input, DC surge device at the combiner, enclosure matched to the roof.

  3. AC output into the building

    Breaker, residual-current device and AC surge device sized for the inverter current, not only for the old building load.

  4. Freeze the part numbers

    The bill of materials is what the next building orders. It does not get rewritten on each enquiry.

Commercial roof with photovoltaic modules

Architecture

Where the devices sit

Commercial and industrial PV protection layout

The drawing shows the path from the array to the grid. Pronto coordinates the low-voltage protection on that path. Modules, inverters and batteries are not part of the supply.

Products

Devices used on this solution

DC Combiner BoxStrings brought to one output
DC MCBString and combiner output
DC SPDAt the combiner or inverter
AC MCBInverter output on the board

Contact

Send the specification, not a general enquiry

String voltage, inverter model and the board schedule are enough to start a device list. Stock and delivery are checked from Poland, Hungary and China.

  • String Voc, Isc and number of strings
  • Inverter DC input and AC output
  • Combiner inputs, if the strings meet in a box
  • Where the AC output lands
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Quick Contact

If you have any questions or need help, feel free to contact our team.

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Contact

Address East Fourth Road, High-tech Park, Nanbin Street, Ruian City, Zhejiang Province, China
E-mail info@pronto-energy.pl
Phone +86 17367172607
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