Shenzhen Topband Automation Technology Co., Ltd.

Product Introduction

DC combiner box is a key equipment in photovoltaic power generation systems, used to converge the DC output currents of multiple photovoltaic modules, simplify the connection with inverters, and improve the reliability and maintenance convenience of the system. It is usually installed between photovoltaic modules and inverters, with functions such as lightning protection, overcurrent protection, and monitoring.

Application

: Centralized photovoltaic power station
Used in large-scale photovoltaic power plants to reduce the connection lines between components and inverters and improve system reliability.

: Distributed photovoltaic system
Suitable for distributed photovoltaic projects such as residential roofs and commercial buildings, simplifying system structure and adapting to complex installation environments.

: Energy storage
Used for DC input convergence in energy storage systems to ensure safe operation of the system.

: Multi channel input and convergence
Supports multiple inputs of photovoltaic modules (such as 8, 12, 16, 24), with each current up to 11A and a maximum of 15A, meeting the needs of photovoltaic systems of different scales.

: Multiple protection functions
Each input is equipped with a photovoltaic specific fuse to prevent current backflow in case of component failure. Equipped with DC high-voltage lightning arrester, both positive and negative poles have lightning protection function, and can withstand a maximum lightning current of 80kA. Anti reverse diodes prevent circulating current between strings.

: Intelligent monitoring and communication
The intelligent combiner box has a built-in monitoring unit that can collect real-time data on each current, bus voltage, box temperature, lightning arrester status, and circuit breaker status, and transmit it remotely through the RS485 interface.

: High protection level
The protection level reaches IP65, with waterproof, dustproof, rust proof, and salt spray resistant functions, suitable for harsh outdoor environments.

Parameter

Product Model	PowerSA-SU24	PowerSA-SU16	PowerSA-SU12	PowerSA-SU8
DC Input	17~24	13~16	8~12	≤8
Max Input Voltage	1000Vdc
Current/String	0~20A
Max Output Current	250A	160A/200A	100A/125A/160A	≤100A
Input Waterproof Port	PG9/PG11
output Waterproof Port	PG21~32	PG19~25	PG16~21	PG13.5~19
Monitoring Module(Optional)	Detect the busbar voltage of each current, circuit breaker status, lightning protector status, cabinet temperature
Communication method/protocol	RS485 / Standard MODBUS-RTU protocol
Accessories & Protection	PV SPD (standard), circuit breaker status monitoring (optional), lightning protection failure monitoring (standard),communication interface: standard (for Intelligent type)
Anti-reverse function	Configure modular anti-reverse diode(optional)
Input Cable	4~6mm² PV cable
Temperature & humidity	Working Temp：-40+85℃ , humidity 95% Non-condensing and non-corrosive gas locations
Altitude	Max Working Altitude：5000m（>3000m load shedding）
Detection module power consumption	Working ≤8W
Aid power supply	AC85V~265V/DC24V(±10%)/DC200V~1000V
Cabinet Material	Hot-dip galvanized steel sheet/stainless steel/SPCC /Plastic
IP Grade	IP65
Size (mm)	850500200	800500180	720500180	630500180
Weight	10~35KG

Photovoltaic Equipment

DC Combiner Box