AC Combiner Box

•Wide voltage adaptability

•High protection level

•Multiple protection functions

•Intelligent monitoring and communication

•Lightweight and easy to install

AC Combiner Box: Product Introduction Video Showcase Insurance Page Testing and Certification Product Parameters Application Cases

Product Introduction

The AC combiner box is an important component of the photovoltaic string power generation system, installed between the AC output side of the inverter and the grid connection point or load. It is mainly used to converge the output currents of multiple inverters, while protecting the inverters from harm on the AC grid side or load side.

Application

: Distributed photovoltaic power generation
Widely used in rooftop photovoltaic projects in industrial parks, commercial buildings, and residential areas to reduce cable usage and line losses.

: Large centralized photovoltaic power station
Used to concentrate the output current of multiple inverters for subsequent boosting and grid connection.

: Energy storage
Ensure the safe operation of the energy storage system in the AC output convergence of the energy storage inverter.

: Wind power generation system
In small-scale wind power projects, it is used to converge the AC output of multiple generators.

: Wide voltage adaptability
Suitable for inverters with different voltage levels from AC400V to AC690V.

: High protection level
The protection level is IP65, which meets the requirements for indoor and outdoor installation, and has characteristics such as waterproof, dustproof, UV resistant, and salt spray corrosion resistant.

: Multiple protection functions
Equipped with second or fourth level lightning protection modules, providing full mode protection. Both input and output use circuit breakers, which can quickly cut off fault currents and protect the inverter.

: Intelligent monitoring and communication
Optional intelligent monitoring instruments can be used to monitor signals such as system voltage, current, power, and electrical energy. Equipped with RS485 communication interface, supporting ModBus RTU protocol for remote monitoring.

Parameter

Product Model	PowerSA-SUNac4	PowerSA-SUNac6	PowerSA-SUNac8
Input strings	4	6	8
Highest Voltage	AC690V
Single Input Current	0~100A
Highest Output Current	250A	400A	630A
Rated Working Voltage Un	480VAC
Voltage Protection Level Up	≤3.2kV
Nominal Flow Capacity In (8/20μs)	20kA(selectable)
Max Flow Capacity Imax (8/20μs)	40kA(selectable)
Response Time	≤25ns
Temperature & Humidity	Working Tem：-40~+85℃ ; Humidity 95% (No frost, no corrosive gas)
Altitude	≤4000m
I/O Switch	Circuit Breaker
Surge Protection	Standard
Cabinet Material	Hot-dip galvanized steel / stainless steel / cold rolled steel / engineering plastic
Cabinet IP Grade	IP65
Cable Connector IP Grade	IP66
Volume	750mm×600mm×220mm

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