Reliable Solar Combiner Box China Manufacturer and Supplier
A solar combiner box is the DC-side enclosure that gathers the outputs of several PV strings into a single line and protects each string before the current reaches the inverter. Inside, every string passes through its own DC fuse for overcurrent protection, a DC circuit breaker handles the combined output, and a surge protective device (SPD) guards against voltage spikes.
By merging string home-runs into one output, a combiner box reduces inverter-side cabling, centralizes string-level protection, and makes fault isolation and maintenance easier. Combiner boxes are classified by DC voltage class — typically DC600V, DC1000V, or DC1500V — and by the number of string inputs they accept, from single-string units up to 32-string utility configurations. TYPLE manufactures them across the DC600V and DC1000V ranges in IP65 enclosures of PC+ABS or cold-rolled steel.
TYPLE Solar Combiner Box Series
Need more strings, dual output, or DC1500V? Custom configurations up to 32 strings are available
Send us your product model or project requirements — our engineering team will reply with a tailored quotation and confirmed lead time within 24 hours.
Need more strings, dual output, or DC1500V? Custom configurations up to 32 strings are available
Send us your product model or project requirements — our engineering team will reply with a tailored quotation and confirmed lead time within 24 hours.
Applications of Photovoltaic Combiner Boxes
- Residential rooftop — Compact 4-string boxes combine a small array into one protected DC line, reducing home-run cabling on the roof.
- Commercial & industrial — 6- to 8-string boxes consolidate larger rooftop arrays with centralized fuse, breaker, and surge protection.
- Ground-mount & utility — Steel-enclosure boxes handle higher string counts and output currents for distributed and utility-scale plants in high-temperature, high-dust sites.
Advantages of TYPLE Solar Combiner Boxes
We supply solar combiner boxes with multiple string options and DC voltage configurations. Fuse ratings, DC breakers, surge protection devices, isolators, terminals, and enclosure specifications can be selected according to project requirements.
Our PV combiner boxes can integrate string fuses, DC surge protection, circuit breakers, and isolation devices to help protect solar arrays and downstream equipment from overcurrent, short circuits, and voltage surges.
Durable weather-resistant enclosures help protect internal electrical components against dust, rain, moisture, and demanding outdoor conditions. Different enclosure materials and protection levels are available for various installation environments.
Clear internal wiring, organized terminals, accessible protection components, and practical enclosure layouts help installers complete wiring, inspection, troubleshooting, and maintenance more efficiently.
Types of TYPLE Solar Combiner Boxes
TYPLE builds PV combiner boxes from 4-string residential units to large multi-string configurations. Three core models cover the most common system sizes:
TPX7-P · 4 In 1 Out · DC600V
- 4 string inputs into 1 DC600V output
- Per-string fuses (10–30 A) + output DC MCB + Type 2 SPD
- IP65 / IK10 PC+ABS enclosure
- For residential and small commercial rooftop systems → View the TPX7-P 4-string DC600V box
TPX7-M · 6 In 1 Out · DC1000V
- 6 string inputs into 1 DC1000V output
- String DC fuses + DC MCB + DC SPD
- IP65 / IK10 enclosure
- For commercial rooftop systems → View the 6-in-1-out DC1000V box
TPX7-M · 8 In 1 Out · DC1000V
- 8 string inputs into 1 DC1000V output, up to 250 A
- 8 DC fuses + DC MCCB + DC SPD
- Cold-rolled steel IP65 / IK10 enclosure
- For large C&I rooftop and ground-mount arrays → View the 8-string DC1000V box
Choosing the Voltage Class: DC600V vs DC1000V
The voltage class should match your system’s maximum DC voltage and scale. DC600V suits residential and small commercial systems; DC1000V suits larger commercial and ground-mount arrays where longer strings reduce cabling.
| DC600V | DC1000V | |
|---|---|---|
| Typical system | Residential & small commercial | Commercial & ground-mount |
| String count | Fewer strings, shorter runs | More strings, longer runs |
| Voltage class | Up to 600 V DC | Up to 1000 V DC |
| TYPLE model | TPX7-P 4/1 | TPX7-M 6/1, 8/1 |
Both ratings fall within the low-voltage (LV) class under IEC, which defines DC up to 1500 V as low voltage — the difference is the voltage level and system scale, not a high-vs-low-voltage distinction. For a full walkthrough of sizing inputs, fuses, and SPDs, see our guide to DC600V vs DC1000V combiner boxes.
Frequently Asked Questions
It combines the DC outputs of multiple PV strings into a single protected output, providing string-level fuse protection, surge protection, and a breaker before the inverter — while reducing the amount of cabling run back to the inverter.
Configurations range from single-string units up to 32-string utility boxes. TYPLE’s standard models cover 4, 6, and 8 strings, with larger configurations available on a custom-order basis.
The voltage class is the maximum DC system voltage the internal components are rated for. DC600V suits residential and small commercial systems; DC1000V suits larger commercial and ground-mount arrays. Both are low-voltage under IEC (DC ≤ 1500 V).
Yes. TYPLE combiner boxes include a DC surge protective device (SPD) alongside string fuses and an output breaker. SPD rating can be configured to your system.
TYPLE combiner boxes are engineered to align with IEC 61439, and their protection components are designed to IEC 60947-2 (breakers), IEC 61643-31 (SPD), and IEC 60269-6 (fuses), built with components sourced from certified supply chain partners.
Yes. TYPLE offers OEM and ODM customization on string configuration, voltage, protection, connector type, and enclosure branding. Send your system specs for a tailored quotation within 24 hours.
