Dual-Fused PV Combiner Box | Global Supply
PV Combiner Box
Key Features of Dual-Fused Combiner Box
Application
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Commercial and Utility-Scale Projects
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Enhanced System Troubleshooting
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High-Voltage System Integration
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Meeting Project Specifications
About
The Junda Dual - fuse PV Combiner Box is compliant with NEC 2017/2020 and is used to combine per string up to a 35A fuse - link (1500V - specific PV fuse, both positive and negative terminal), output circuit breaker rat ing 400A or 500A. In a photovoltaic power generation system, a device
that combines several PV string parallel for one output. Used between PV modules and inverter. NEMA 4X enclosure ratings, meeting the outdoor in stallation and usage requirements. Installation and maintenance simple, convenient, it has a long service life.
Features
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Finger - safe fuse holders
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400A or 500A, 1500V load breaker switch
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Plated bus bars rated for 90°C, Cu/Al
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Breather vent reduces internal condensation
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Safety insulation shield covers all live components
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Designed for ease of cable installation
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1500V - Specific PV SPD, Type II
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NEMA 4X lockable enclosure
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Standard 5 - year warranty
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Compliant with NEC 2017/2020
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Meet UL1741 standard/compliance
Flexible
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Pre - installed input glands or MC4 terminal connectors
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Pre - installed output/grouding glands
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Pre - installed breather valve
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Pre - installed mounted brackets
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Output Cu/Al bus bars: cable cross section area 500 - 1000 AWG/kcmil,easy 2 - hole output plug access
TYPE
MODELS | JD-PVDF-16 | JD-PVDF-20 | JD-PVDF-24 |
|---|---|---|---|
Maximum system voltage | 1500 V dc | 1500 V dc | 1500 V dc |
Maximum fuse | Up to 35A | Up to 35A | Up to 35A |
Maximum circuit breaker rating | 400A (external handle+AX) | 500A (external handle+AX) | 500A (external handle+AX) |
Number of Dc input circuits | 16 | 20 | 24 |
Input cable | 8 ~ 12AWG8 ~ 12AWG | 8 ~ 12AWG | 8 ~ 12AWG |
Output cable | 2* (1*500 ~ 800) AWG/kcmil Cu or Al | 2* (1*800 ~ 1000) AWG/kcmil Cu or Al | 2* (1*800 ~ 1000) AWG/kcmil Cu or Al |
Grounding cable | 1/0 ~ 6AWG | 1/0 ~ 6AWG | 1/0 ~ 6AWG |
SPD | Type ll, max: 40KA; limp: 6.25KA, Uc: 1500V | Type ll, max: 40KA; limp: 6.25KA, Uc: 1500V | Type ll, max: 40KA; limp: 6.25KA, Uc: 1500V |
Enclosure | NEMA 4X | NEMA 4X | NEMA 4X |
Maximum air ambient | 50℃ | 50℃ | 50℃ |
Enclosure size (inches, W*H*D) | 36”*28”*10”（a） | 39”*28”*10”（a） | 39”*28”*10”（a） |
Weight (pounds) | 99lbs | 99lbs | 105lbs |
Maximum Protection For PV Systems
Dual-fused PV Combiner Box -Real-time monitoring, Advanced safety,Simplified installation,Performance solution for photovoltaic (PV) systems
Advanced Safety
Our design provides an independent fuse for both the positive and negative sides of each solar string
Safe and Reliable Solar Array
Combiner boxes are engineered to safeguard your system, ensuring peak performance and long-term reliability
High-Performance Systems
The robust construction and high-quality internal components ensure efficient power handling and a stable
Installation and Maintenance
The spacious interior and clearly marked terminals make wiring a straightforward process, saving time
Certified for Markets
Our solar combiner boxes are rigorously tested and certified to meet the highest safety standards in our key markets
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Q1: What is a Dual-fused PV Combiner Box?
A Dual-fused PV Combiner Box is a specialized electrical enclosure that consolidates DC power from multiple solar strings. Unlike a standard combiner box, it provides enhanced protection by integrating two fuses for each string—one for the positive conductor and one for the negative conductor.
Q2: Why is dual fusing important for a solar system?
Dual fusing provides a superior level of safety and reliability. In the event of a fault, it ensures that both the positive and negative sides of a string are disconnected, preventing potential overcurrents, arc flashes, and damage to solar panels and inverters. This is especially critical for large-scale, high-voltage systems.
Q3: How does it improve troubleshooting and maintenance?
With fuses on both the positive and negative lines, technicians can quickly pinpoint the exact location of an electrical fault. This simplifies diagnostics, reduces the time required for maintenance, and minimizes system downtime, ensuring your entire photovoltaic system stays operational.
Q4: What are the main benefits of using a Dual-fused PV Combiner Box over a single-fused one?
The primary benefits are enhanced safety, increased reliability, and long-term system integrity. Dual fusing provides more comprehensive protection against a wider range of electrical faults, helps prevent expensive equipment damage, and ensures compliance with some of the most stringent safety standards in the industry.
FAQ
Q5: Is this product compatible with high-voltage (1500V) systems?
Yes, our Dual-fused PV Combiner Box is specifically designed for the demands of high-voltage systems. The robust, dual-fused design is a necessary safety measure to manage the increased power and potential risks associated with these large-scale installations.
Q6: What applications are best suited for this product?
This product is ideal for commercial, industrial, and utility-scale projects where maximum safety, reliability, and uptime are non-negotiable. It's the preferred choice for projects that must meet strict safety codes and require a high level of system protection and easy maintenance.
Q7: How does a Dual-fused PV Combiner Box help with project compliance and certification?
By incorporating a dual-fused design, the combiner box helps your projects meet stringent safety and performance standards, such as those set by UL and IEC. This can be a key factor in securing project approvals and demonstrates a commitment to professional excellence and safety.
Q8: Can a Dual-fused PV Combiner Box be customized for specific project needs?
Yes, our Dual-fused PV Combiner Box can be customized to meet the unique specifications of your project. This includes options for the number of input strings, fuse ratings, and additional components like surge protection devices (SPDs) to ensure perfect integration and optimal performance.
WHY JUNDA
A Different Approach, Using a New Method of Manufacturing
Our Factory
At our factory, operational excellence isn't just a slogan, it's the way we work. We're constantly striving to improve every aspect of our production process, from material selection to final assembly. By eliminating waste and focusing on efficiency, we ensure we're delivering the highest quality PV harnesses while maximizing productivity.
COLLABORATION
Our Industry Partners
