DCDB: Array Junction Box, DC Distribution Box

Array Junction Box (AJB) also known as DCDB (Direct Current Distribution Box), component of an electricity supply system which divides an electrical power feed into subsidiary circuits, while providing a protective fuse or circuit breaker for each circuit.  DCDB controls the DC power from Solar Panels and with having necessary surge protection device (SPD) and fuses to protect the solar panels strings and solar inverter from any type of damage. All switches at the circuit breakers, connectors confirm to IEC 60947, part I, II and III.

Solar-DC-Distribution-Box ACDB & DCDB

Solar DCDB (Direct Current Distribution Box)
ACDB: AC Distribution Box, AC Junction Box

The ACDB (Alternative Current Distribution Box) receives the AC power from the solar inverter and directs it to AC loads through the distribution board. ACDB includes necessary surge protection device (SPD) and MCCB to protect the solar inverter from any type of damage or heavy voltage. Specifications of ACDB may change as per load or inverter capacity. ACDB provided at the cable terminating point emanating from 5 KVA Solar Inverter for interconnection control of dedicated electrical loads.

Solar-DC-Distribution-Box ACDB & DCDB


Solar ACDB (Alternative Current Distribution Box) 

Technical Specification

Sl NoFeatures Solar DCDBSolar ACDB
 1Ambient-10 to 60 Degree C-10 to 60 Degree C
 2Type of EnclosureIP66 Polycarbonate MaterialIP66 Polycarbonate Material
 3Inputs/Outputs1 in 1 Out, 2 in 2 Out, 3 in 3 Out, 4 in 4 OutSingle Phase ACDB, 3 Phase DCDB
 4AC Switching600/1000/1500VDC DisconnectionMCCB/MCB Based AC Disconnection
 5Surge ProtectionDC SPD Type 2, Fuse with or without IndicationsAC SPD Type 2
 6Box / Top CoverOpaque/TransparentOpaque/Transparent