Junction Distribution Box

JDB Series

General Description

The JDB Series Modular Power Distribution Block is designed for safe and organized connection, branching, and distribution of electrical conductors in residential, industrial electrical systems, automation panels, and solar energy projects.

It features a compact rectangular housing with multiple terminal connection points, allowing a single incoming power source to be distributed to multiple outgoing circuits. This multi-terminal configuration provides flexible wiring arrangements, replaces traditional busbar systems, optimizes wiring space, and effectively reduces assembly time.

The housing is made of high-quality engineering plastic, offering good mechanical durability, flame resistance, and heat resistance. A transparent protective cover provides convenient visual inspection while helping protect terminals from accidental contact, short circuits, and dust.

The terminal and conductive components are manufactured from high-quality brass to provide excellent electrical conductivity and reliable heat resistance during operation. Its modular construction allows multiple units to be combined (interlocked) to create 1P, 2P, 3P, or 4P configurations according to installation requirements. Quick installation helps reduce assembly time; the unit can be securely screw-mounted inside electrical panels and cabinets or installed on standard DIN rails.

Junction Distribution Box – iLEC JDB-407

Junction Distribution Box – iLEC JDB-411

Junction Distribution Box – iLEC JDB-415

Technical specification

Model name	JDB-407	JDB-411	JDB-415
Number of poles	4P (3P+N)	4P (3P+N)	4P (3P+N)
Number of outputs	7 outputs/pole	11 outputs/pole	15 outputs/pole
Rated Insulation Voltage (Ui)	690V
Rated Current (In)	125A
Peak Withstand Current (Ipk)	20kA
Operating Temperature	40ºC (Current capacity decrease above 40ºV)
Protection Class	IP20
Dimension (WxLxH)	65 x 87 x 50 (mm)	100 x 87 x 50 (mm0	132 x 87 x 50 (mm)
Weight	206g	302g	406g

Structure of JDB series

Junction Distribution Box iLEC JDB Series

Multi-Terminal Structure (Per Pole)

JDB-407 (7 connection points per pole):
- 2 Large Ports: Designed for main incoming power source or high-power loads.
- 5 Small Ports: Designed for branch circuit distribution to standard loads.
JDB-411 (11 connection points per pole):
- 2 Large Ports: Designed for main incoming power source or high-power loads.
- 2 Medium Ports: Designed for intermediate load distribution.
- 7 Small Ports: Designed for branch circuit distribution to standard loads.
JDB-415 (15 connection points per pole):
- 2 Large Ports: Designed for main incoming power source or high-power loads.
- 2 Medium Ports: Designed for intermediate load distribution.
- 11 Small Ports: Designed for branch circuit distribution to standard loads.

Key Advantages & Applications

Ideal for neat wiring, easy maintenance, troubleshooting, and component replacement in electrical panels.
Ensures robust electrical insulation and significantly minimizes risks of short circuits or electrical fires.