SCDB-3/1 AC Distribution Box

The SCDB photovoltaic AC combiner box is an essential component in photovoltaic string-type power generation systems, designed to provide power protection between string inverters and AC distribution cabinets or step-up transformers. By combining the output currents of multiple inverters, this device simplifies the wiring between string inverters and AC distribution cabinets or step-up transformers, enhancing system reliability and maintenance convenience.

High Protection Rating: Achieves an IP65 protection rating, offering waterproof, dustproof, UV-resistant, and salt fog corrosion-resistant features, meeting the requirements for outdoor installation.
Multi-String Input: Capable of simultaneously connecting outputs from multiple string inverters, with each input line protected by a thermal-magnetic circuit breaker, rated for AC1140V.
Intelligent Monitoring: Equipped with an integrated energy meter, enabling local or remote data monitoring via the RS485/ModBus-RTU communication protocol.
High-Voltage Surge Protection: Fitted with a dedicated high-voltage surge protector, providing overvoltage and surge protection between three phases, with a working voltage exceeding AC1140V.
Reliable Structure: The internal busbar employs electroplated or purified busbar connections, reducing busbar resistance and connection points, and enhancing the DC withstand voltage value.
Flexible Customization: Can be customized according to user requirements for box material, size, and other functions, offering private-label customization options.

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Function

Parameters

Downfile

Advantages/Key Features

1 High Protection Rating

The protection rating reaches IP65, which provides dustproof, moissture-proof, and salt fog proof functions, meeting the requirements for outdoor installation

2 Intelligent Monitoring

Featuring an embedded energy meter with local/remote monitoring capabilities through RS485/ModBus-RTU

3 Flexible Customization

Customizable enclosure materials, sizes, and functionalities per client requirements, with OEM options available

Model	SCDB-1/1	SCDB-1/1	SCDB-2/1
Electrical Parameters
Rated Voltage	230VAC/400VAC
Insulation Voltage	690VAC
Frequency	50Hz/60Hz
Max Number of Input Circuits	1	1	2
Rated Current	25A/32A	25A/32A/40A/50A/63A	25A/32A/40A/50A
Max Number of Output Circuits	1	1	1
Max Switch Output Current	63A	63A	125A
Surge Protective Device	T2/T1+2, In=20kA, Imax=40kA
General Parameters
Enclosure Material	PC/ABS/SPCC/SS
Dimensions (W×H×D)	352×230×120mm
Protection Level	IP65
Operating Temperature/Humidity	Temperature: -20°C ~ +60°C ，Humidity: 0-95%
Altitude	≤2000m
Mounting Method	Wall-Mounted

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Solarc Electric SCDB-3/1 AC Distribution Box.pdf

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SCDB-3/1 AC Distribution Box