The SUNWAY Smart PV Combiner Box is an essential accessory engineered for multiple PV strings connections. Available in a flexible design with 8 or 16 optional inputs, it safely and efficiently consolidates solar generation before routing it to the inverter. The unit is housed in a robust galvanized steel enclosure and utilizes a natural convection cooling method. To maximize system oversight, it features an inbuilt smart controller for monitoring. Specifically, the monitoring function accurately tracks string current, bus voltage, breaker status, surge arrestor status, and internal temperature.
PV Combiner Box Specification document
Product Advantages and Features
Robust Electrical Safety:
The system delivers comprehensive protections , including 25A input fuses located on both the negative and positive poles of each string for highly effective over current protection.
Advanced Environmental Resilience:
Built with a galvanized steel enclosure , the unit features an IP65 protection degree for excellent environment compatibility.
Integrated Surge Defense:
The box is fully equipped with Type II lightning protection to shield sensitive downstream components using a PV SPD.
Comprehensive System Monitoring:
The inbuilt smart controller provides an extensive monitoring function that actively tracks internal temperature, bus voltage, string current, and breaker status.
Seamless Digital Integration:
It includes a standard RS485 communication interface , allowing operators to easily integrate the combiner box into centralized monitoring networks.
Flexible Installation:
It natively supports wall-mount installation and is capable of operating at an altitude of 2000m without derating.
Product Information Sheet
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PV-CB8M-P
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PV-CB16M-P
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Input DC
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Max. input voltage
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1000V
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1000V
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Max. string Isc
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20A
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20A
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Number of input string
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8
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16
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Input fuse
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1 on negative and positive pole of each string,
25A, 10*38mm |
1 on negative and positive pole of each string,
25A, 10*38mm |
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Input cable gland
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4mm-8mm cable diameter
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4mm-8mm cable diameter
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Input cable terminal
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4mm²–6mm²
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4mm²–6mm²
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Output DC
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Number of output
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1
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1
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Max. output current
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160A
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320A
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Output breaker
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200A
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400A
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Output cable terminal
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70mm2
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120mm2
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Output cable gland
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13mm-18mm cable diameter
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18mm-25mm cable diameter
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General Information
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Dimension (W/H/D)
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600/500/172mm
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600/500/202mm
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Weight
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22.5kg
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29kg
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Enclosure material
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Galvanized steel
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Galvanized steel
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Protection degree
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IP65
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IP65
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Operating temperature
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-25°C~55°C
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-25°C~55°C
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Humidity
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0~99%
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0~99%
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Altitude
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2000m without derating
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2000m without derating
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Lightning protection
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Type II
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Type II
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Cooling method
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Natural convection
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Natural convection
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Mounting
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Wall-mount
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Wall-mount
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Monitoring
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String current, bus voltage, breaker status,
surge arrestor status, internal temperature |
String current, bus voltage, breaker status,
surge arrestor status, internal temperature |
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Power supply
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DC300V~1000V
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DC300V~1000V
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Power consumption
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14W
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14W
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Communication
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RS485
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RS485
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