8 String Combiner Box – 1000V DC PV Combiner

Name: PV 8 String Combiner Box 1000V - ETEK Electri
SKU: EKDBT-PV8/1-1000

The EKDBT-PV8/1-1000 is an IP65 8 string combiner box that merges eight PV strings into one DC output. Built-in fuses, a 40kA surge protector and a 250A main switch protect 1000V solar systems in residential, commercial and industrial installations.

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ModelEKDBT-PV8/1-1000

CategoryDC Combiner Boxes, PV Combiner Boxes

AvailabilityIn stock

CE & TUV certified
Worldwide shipping
OEM & ODM support

Product Features of 8 String Combiner Box

The EKDBT-PV8/1-1000 8 string combiner box brings string fusing, surge protection, and a main DC disconnect together in a single enclosure, which simplifies the wiring between the PV array and the inverter or DC distribution cabinet.

Rugged IP65 enclosure: a metal combiner box casing measuring 750 × 560 × 180 mm, with customizable shell materials available on request.
8 strings in, 1 output: eight PV strings are merged into one DC output (8/1 configuration).
Full string protection: 16 DC fuses (EKF1-10XPVH-10-1P, 15A, 1000VDC) protect both the positive and negative lines of every string against short circuits.
Over-voltage and lightning protection: one EKU5-T2-40PV-2M1000 DC surge protector (40kA, 2P, 1000VDC).
Main DC switch: one EKM7DC-250M/2 main switch (2P, 250A, 1000VDC) for safe isolation of the combined output.
Grounding: a dedicated PE terminal is provided for protective earth connection.
Optional upgrades: anti-reflection (anti-backflow) diode and monitoring module can be added to suit project requirements.
Customizable: the EKDBT series lists standard configurations only; special requirements can be customized to the user’s needs.

Commercial Applications of 8 String Combiner Box

The 8 string combiner box is designed for photovoltaic power generation systems operating under 1000V DC. By combining eight strings into one output, it reduces the number of cables that have to be run to the inverter and keeps short-circuit and over-voltage protection in one easy-to-service location. The EKDBT series is suitable for residential, commercial and industrial PV installations.

Applications & Use Cases

Residential rooftop PV systems with up to eight module strings.
Commercial rooftop and carport solar arrays that need centralized string protection.
Small industrial and ground-mounted PV plants operating at up to 1000V DC.
Sub-array combining ahead of an inverter or DC distribution cabinet, where the 8 string combiner box reduces input wiring.
Projects that require optional string monitoring or anti-backflow diodes added to the standard configuration.

Technical Specifications of 8 String Combiner Box

The table below lists the standard configuration of the EKDBT-PV8/1-1000 8 string combiner box.

Parameter	Specification	Qty
Model	EKDBT-PV8/1-1000	–
Category	DC PV Combiner Box	–
String inputs / outputs	8 in / 1 out	–
System voltage	1000V DC	–
Enclosure	750 × 560 × 180 mm, IP65, metal (customizable shell materials)	1
DC SPD	EKU5-T2-40PV-2M1000 (40kA, 2P, 1000VDC)	1
DC fuse	EKF1-10XPVH-10-1P (15A, 1000VDC)	16
Main switch	EKM7DC-250M/2 (2P, 250A, 1000VDC)	1
Anti-reflection diode	Optional	–
Monitoring module	Optional	–

Dimensions and Wiring of 8 String Combiner Box

The EKDBT-PV8/1-1000 8 string combiner box has an enclosure size of 750 × 560 × 180 mm (W × H × D as listed in the datasheet). Field wiring follows the diagram below:

Negative inputs: FU1~3- and FU4~8- (strings 1–8, negative lines, each through a fuse).
Positive inputs: FU1~3+ and FU4~8+ (strings 1–8, positive lines, each through a fuse).
Outputs: OUT- and OUT+ connect to the inverter or DC distribution cabinet through the 250A main switch.
Earth: PE connects to the system protective earth via the SPD.

Dimensions and Wiring of 8 String Combiner Box