JHUKK-400 400A High Current Unipolar Junction Box for Large Cable Distribution

TheJHUKK-400 is a high-current unipolar junction box designed for electrical power distribution, large cable connections and industrial wiring applications. With a rated current of 400A and a rated voltage of 690V IEC, it provides a practical connection solution for applications that require reliable distribution of high-current electrical power.

Compared with smaller models in the JHUKK series, the JHUKK-400 is designed for larger conductors and higher current applications. Its main conductor connection range reaches 95–185 mm², making it suitable for large power cables used in industrial equipment, electrical cabinets, distribution systems and other heavy-duty electrical installations.

Designed for 400A High-Current Applications

One of the main advantages of the JHUKK-400 is its 400A rated current capacity. This makes it suitable for power distribution applications where a conventional small terminal block may not provide enough connection capacity.

The terminal structure allows one large incoming conductor to be connected with multiple outgoing conductors. This makes it useful for applications where power needs to be distributed from a main cable to several branch circuits.

The JHUKK-400 supports:

• 95–185 mm² × 1 main conductor
• 6–35 mm² × 2conductors
• 2.5–16 mm² × 5conductors
• 2.5–10 mm² × 4conductors

This combination allows different conductor sizes to be connected within one terminal block, providing flexibility for power distribution systems.

Suitable for Large Cable Connections

Large cable installations often require a connection point that can accommodate different conductor sizes without taking up excessive space inside an electrical enclosure. The JHUKK-400 is designed around this requirement.

With support for conductors up to 185 mm², it can be used for high-current main cable connections and distribution applications. Multiple smaller conductor positions are also available for branch wiring.

This makes the JHUKK-400 suitable for:

• Industrial power distribution
• Electrical control cabinets
• Power distribution cabinets
• Industrial machinery
• Large equipment wiring
• Motor power connections
• Building electrical systems
• Main and branch cable distribution
• High-current electrical installations

PA Nylon Housing with UL94V0 Flame Retardant Grade

The JHUKK-400 uses a PA Nylon housing designed for electrical connection applications. The housing has a UL94V0 flame retardant grade, providing an additional level of material performance for applications where flame-retardant electrical components are required.

The compact housing is designed to keep the connection structure organized while providing multiple cable entry positions.

Brass Nickel-Plated Metal Parts

The metal conductive components are made from brass with nickel plating. This construction is designed to provide a stable electrical connection while improving the surface performance of the metal components.

The nickel-plated finish also gives the conductive parts good resistance to common environmental influences encountered in electrical installations.

Transparent Protective Cover

The JHUKK-400 features a transparent cover that allows users to visually inspect the internal connection area.

This design can be useful during installation, maintenance and inspection because the connection condition can be checked without immediately removing the cover.

For electrical cabinets and distribution equipment, visual inspection can help make routine maintenance more convenient.

Compact Structure for High-Current Distribution

Although the JHUKK-400 is designed for a high current of 400A and conductors up to 185 mm², its overall dimensions are only:

47 × 95 × 50 mm (L × W × H)

The compact structure makes it easier to integrate the terminal into electrical cabinets, distribution boxes and other limited installation spaces.

The multiple connection positions are arranged within the housing to provide a practical solution for combining a large incoming cable with several smaller branch conductors.

Multiple Cable Sizes in One Terminal

A major feature of the JHUKK-400 is its ability to handle several conductor ranges within one unit.

Instead of using separate connection blocks for different cable sizes, the JHUKK-400 provides multiple connection positions for large and small conductors. This can simplify the layout of power distribution wiring and help reduce the number of individual components required.

For system designers and electrical installers, this flexible configuration can be useful when the main power cable and branch cables have significantly different cross-sectional areas.

Applications

The JHUKK-400 can be used in a variety of industrial and commercial electrical applications where high-current cable distribution is required.

Typical applications include:

Industrial Power Distribution
Used for distributing power from a large incoming cable to multiple branch circuits.

Electrical Cabinets
Suitable for power connection and cable distribution inside electrical control and distribution cabinets.

Industrial Machinery
Can be used for high-current connections in industrial equipment and machinery.

Large Electrical Equipment
The 400A rating and 185 mm² maximum conductor range make the product suitable for equipment requiring large cable connections.

Power Distribution Systems
The multiple conductor ranges allow the terminal to connect main cables with several smaller branch conductors.

JINH Electrical Connection Solutions

As part of the JHUKK series, the JHUKK-400 provides a solution for high-current cable distribution where larger conductors and multiple branch connections are required.

The product combines a 400A rated current, 690V IEC rated voltage, 185 mm² maximum conductor connection range, PA Nylon housing, UL94V0 flame retardant material and transparent protective cover in a compact terminal structure.

For distributors, importers, electrical wholesalers and equipment manufacturers, the JHUKK-400 can be used as a practical component for industrial power distribution and large cable connection projects.

If you are looking for a 400A terminal block for 185 mm² cable, the JHUKK-400 provides multiple conductor connection options in one compact unipolar junction box.