Configurable PV Inputs
Supports up to 24 configurable PV string inputs, giving flexible connection options for arrays of nearly any size and simplifying system integration during design and installation.
SOLAR PV DC PROTECTION AND DISTRIBUTION
Direct Current Distribution Box (DCDB) for Solar PV Systems
DCDB SERIES
Centralized DC Protection, Isolation and String Consolidation for Solar Arrays
Sertel Direct Current Distribution Box (DCDB) is a DC-side protection and consolidation unit built for solar PV systems. Installed between the PV array and the inverter, it brings overcurrent protection, integrated surge protection and safe DC isolation into a single enclosure, giving installers and engineers one defined point to inspect, test and isolate an entire array. Configurable for up to 24 PV strings and rated for systems up to 1500V DC, the DCDB is suited to rooftop, commercial, industrial and utility-scale solar installations that need dependable DC-side protection without added wiring complexity.
Up to 24 configurable PV string inputs
Rated for 1500V DC maximum system voltage
Integrated DC surge protection device (SPD)
IP66-rated ABS / PC / FRP enclosure
Single or multiple output configurations
Operating range of -10°C to +55°C
Key Features
Engineered for Safe, Uninterrupted Solar Power
Everything needed to consolidate, protect and isolate DC power from the PV array to the inverter, in one compact enclosure.
1500V DC System Rating
Designed to support a maximum system voltage of 1500V DC, enabling reliable operation across the higher string voltages used in modern commercial and utility-scale solar installations.
Integrated Surge Protection
An integrated DC surge protection device (SPD) protects the inverter and PV modules from transient overvoltages, reducing the risk of damage during lightning strikes or switching events.
Safe DC Isolation
A built-in isolation function provides a reliable means of disconnecting the PV system from the inverter, supporting safe maintenance, servicing and emergency shutdown.
Short Circuit and Overcurrent Protection
Protects PV strings against faults and excessive current, helping prevent damage to panels, wiring and the inverter before it can propagate through the system.
IP66 Enclosure Protection
The IP66-rated ABS/PC/FRP enclosure keeps dust and water out of the protection and distribution components inside, supporting reliable operation on rooftops, within solar plants or at ground level.
How the DCDB Fits Into Your Solar Installation
A defined workflow for bringing DC-side protection and isolation into a new or existing PV array.
01
Assess String Count and Voltage
Confirm the number of PV strings and the array's maximum system voltage so the DCDB can be configured with the right number of inputs and outputs.
02
Route Strings to the DCDB
PV string cables are routed into the DCDB enclosure ahead of the inverter, consolidating the array's DC output at one point.
03
Protection Engages Automatically
Overcurrent protection and the integrated DC SPD guard the consolidated output continuously, without requiring manual intervention during normal operation.
04
Isolate for Maintenance
When service is needed, the integrated isolation switch disconnects the PV system safely, without disturbing individual string wiring.
Applications
Trusted Across Solar Installations
The Sertel DCDB is suited to any solar PV installation where multiple strings need to be safely combined, protected and connected to the inverter.
Renewable Energy
Solar PV Plants
Commercial and Industrial
Residential Rooftops
Utility-Scale Solar
PV String Combining
Technical Specifications
Complete electrical, mechanical and environmental specifications for the Sertel DC Distribution Box (DCDB).
Electrical and Protection
| Parameter | Specification |
|---|---|
| PV Inputs | Up to 24 strings (configurable) |
| Max System Voltage | 1500 V DC |
| Surge Protection | Integrated DC SPD |
| Number of Outputs | Single / Multiple |
| Application | Solar PV systems |
This feature is available only on specific requests and at suitable price points. Output ports are customizable based on project requirements. Product development is a continuous process and specifications are subject to change without prior notice.
Frequently Asked Questions
Ready to Protect Your Solar Array?
Talk to a Sertel engineer for a DCDB configuration suited to your PV array size and voltage.