PV Combiner Box 2~24 String Series

Overview

A PV (Photovoltaic) Combiner Box is a crucial component in solar power systems, designed to consolidate the output from multiple solar panel strings into a single main output. This simplifies wiring, enhances system efficiency, and provides essential protection for the solar array and associated equipment.

Our PV Combiner Boxes are engineered for reliable performance across various solar installations, from residential rooftops to large-scale commercial and utility-grade projects. They are built to meet international safety and performance standards, ensuring stable operation in diverse environmental conditions.

Key Features

**Robust Protection:** Integrated overcurrent protection (fuses/circuit breakers), short-circuit protection, surge protection devices (SPD) for lightning strikes, and reverse polarity protection.
**Durable Enclosure:** High IP rating (IP65/IP66) for superior waterproof, dustproof, and anti-corrosion performance, suitable for outdoor installation in harsh environments. UV-resistant and flame-retardant materials ensure long-term stability.
**Wide Voltage & Current Compatibility:** Supports common system voltages (e.g., 1000VDC, 1500VDC) and handles typical string currents (e.g., 15A per string).
**Optimized Design:** Compact dimensions with smart thermal spacing and cable layout for efficient heat dissipation and simplified wiring.
**Easy Installation & Maintenance:** Pre-wired options and clear labeling facilitate quick and efficient installation. Wall-mounted design for easy system integration and maintenance.
**Optional Monitoring:** Advanced models offer real-time monitoring of string current, voltage, temperature, and SPD status, with communication interfaces (e.g., RS-485) for comprehensive system management.
**High-Quality Components:** Equipped with reliable DC fuses, DC circuit breakers, and surge protective devices from reputable manufacturers.

Technical Specifications

Parameter	Value Range (Typical)	Notes
Input Strings	2 ~ 24 strings（N in N out）	Configurable based on model
Max. System DC Voltage	1000V DC / 1500V DC	Select model based on system voltage
Max. Input Current per String	15A (Typical)	Replaceable fuses / string OCPD
Max. Output Switching Current	32A to 400A (Model dependent)	Determined by main DC breaker/switch
Protection Degree	IP65 / IP66	Waterproof, Dustproof, Anti-corrosion
Surge Protection Device (SPD)	Type 2 (Optional Type 1+2)	Nominal Discharge Current (In): 20kA
Operating Temperature Range	-25°C to +55°C	Ensures reliability in various climates
Relative Humidity	0-95% (Non-condensing)
Altitude	≤ 2000m (Standard)	Higher altitudes may require derating
Enclosure Material	Polycarbonate (PC), ABS, Metal (SS304)	UV-resistant, Flame-retardant
Standards Compliance	IEC 61439-2, IEC 60364-7-712, CE, TÜV	Meets international safety standards
Installation Method	Wall-mounted	Quick and secure installation

Applications

Our PV Combiner Boxes are ideal for a wide range of solar photovoltaic installations, ensuring optimal performance, enhanced safety, and simplified system management:

**Residential Solar Systems:** Protecting and managing PV strings on rooftops for homes and small properties.
**Commercial & Industrial Solar Installations:** Essential for larger systems on commercial buildings, factories, and warehouses.
**Large-Scale Ground-Mounted Power Plants:** Consolidating numerous PV strings for efficient power aggregation in utility-scale projects.
**Off-Grid Solar Systems:** Providing critical protection and connection points for standalone power solutions.
**Solar Pumping Systems:** Ensuring reliable operation for solar-powered water pumps in agricultural or remote areas.
**Electric Vehicle (EV) Charging Stations:** Integrating solar power efficiently into EV charging infrastructure.