20-String 1500V Combiner Box with 400A Main Switch

Name: 1500V Combiner Box 20-String 400A - ETEK Electri
SKU: EKDBT-PV20/1-1500

The EKDBT-PV20/1-1500 is an IP65 metal 1500V combiner box that merges 20 photovoltaic strings into one DC output. It integrates 40 fuses, a 3P surge protector and a 400A main switch for safe, reliable large-scale PV wiring.

Request a Quote

Pricing is quoted per order — tell us your quantity and destination and our sales team will respond with a full offer.

ModelEKDBT-PV20/1-1500

CategoryDC Combiner Boxes, PV Combiner Boxes

AvailabilityIn stock

CE & TUV certified
Worldwide shipping
OEM & ODM support

Product Features of 1500V Combiner Box

This 1500V combiner box is built to simplify DC wiring between PV strings and the inverter while protecting the whole array:

20-in-1-out design: combines 20 PV strings (FU1~9 and FU10~20 groups) into a single DC output.
Short-circuit protection: 40 x EKF1-15PVH-10L-1P fuses (15A, 1500VDC), one on the positive and one on the negative of each string.
Overvoltage and lightning protection: EKU5-T2-40PV-3M1500 surge protector (40kA, 3P, 1500VDC) with PE grounding.
Safe isolation: EKM7DC-400M/2 main switch (2P, 400A, 1500VDC) for on-load switching and maintenance isolation.
IP65 metal enclosure (860×560×200mm) for outdoor, dust-proof, and water-resistant installation; shell materials can be customized.
Optional anti-reflection diode and monitoring module, plus custom configurations on request.

Commercial Applications of 1500V Combiner Box

A 1500V combiner box such as the EKDBT-PV20/1-1500 suits commercial, industrial, and utility-scale solar plants that use 1500V DC system voltage. Combining many strings into one protected feeder reduces cable runs and keeps inverter inputs organized.

Applications & Use Cases

Commercial rooftop PV systems with many parallel strings.
Industrial and factory solar power plants.
Ground-mounted and utility-scale solar farms operating at 1500V DC.
Central or string inverter input wiring where string-level fuse protection is required.
Projects needing string monitoring, using the optional monitoring module.

Technical Specifications of 1500V Combiner Box

Key configuration of the EKDBT-PV20/1-1500 1500V combiner box, as listed in the manufacturer catalogue:

Item	Specification	Qty
Model	EKDBT-PV20/1-1500	–
Input / Output	20 strings in / 1 out	–
Rated system voltage	1500V DC	–
Enclosure	860×560×200mm, IP65, metal (customizable shell materials)	1
DC SPD	EKU5-T2-40PV-3M1500 (40kA, 3P, 1500VDC)	1
DC fuse	EKF1-15PVH-10L-1P (15A, 1500VDC)	40
Main switch	EKM7DC-400M/2 (2P, 400A, 1500VDC) – 400a dc mccb class main breaker	1
Anti-reflection diode	Optional	–
Monitoring module	Optional	–

Dimensions and Wiring of 1500V Combiner Box

The 1500V combiner box measures 860×560×200mm (IP65, metal). Inside, strings 1~9 and 10~20 connect to the fuse banks through the FU1~9 and FU10~20 positive and negative terminals. The fused positives and negatives feed the main switch, which connects to OUT+ and OUT-, while the SPD is bonded to PE.

Dimensions and Wiring of 1500V Combiner Box