Overview

High-Voltage DC String Consolidation

The SMC Series DC Combiner Box is designed to streamline solar PV installations by combining multiple array strings into a single output. Engineered for high-voltage systems up to 1500V DC, it significantly simplifies wiring between the DC distribution cabinet and the inverter. This pre-installed solution reduces installation time and error susceptibility while providing robust protection for grid-tied and off-grid solar power systems.

Technical Performance

Ingress Protection

IP65

Maximum DC Voltage: 1500 V
PV DC Inputs: 8-24 Channels

Internal configuration of the 24-string DC combiner box — Internal view showing the organized wiring and component layout for high-capacity string consolidation.

Safety & Protection

Integrated Protection Features

Lightning protection
Short-circuit protection
Grounding protection
Over-voltage protection
Reverse connection protection
Anti-backflow protection
Overcurrent protection

Internal Components

True solar DC disconnect switch
DC surge baffle / protector
Individual channel fuses
Fire protection shell

Waterproof and lightning protection features — Specifically engineered for outdoor reliability with moisture-proof sealing and lightning protection.

Certifications

Product Certifications: CECBTUV

Construction

Enclosure Characteristics

Durable material housing
Waterproof and moisture-proof
Fire-resistant shell
Outdoor-rated design

IP65 fire protection shell of the PV combiner box — The durable IP65 enclosure provides superior protection against environmental factors and fire hazards.

System Architecture

Solar System Integration

Acts as the central consolidation point between the PV Array (via MC4 connectors) and the Inverter. It integrates DC fuses, surge protectors, and isolators to ensure safe energy flow from the array to the AC distribution and grid.