JHUKK-250 250A Large Cable Distribution Terminal for Industrial Power Systems

When electrical installations involve large power cables and several outgoing circuits, cable distribution becomes an important part of panel design. Different circuits may use different conductor sizes, so a distribution component needs to provide enough connection capacity while keeping the wiring layout manageable.

TheJHUKK-250 Large Cable Distribution Terminal is designed for this type of application. With a rated current of 250A and a rated voltage of 690V IEC, it provides a centralized connection point for a large incoming conductor and multiple outgoing wires.

Unlike simple connection terminals intended for similar-size wires, the JHUKK-250 offers several conductor ranges within one unit. This makes it particularly useful for electrical systems where the main power cable and branch cables have different cross-sectional areas.

Designed for Large Main Cables

One of the most notable features of the JHUKK-250 is its ability to accommodate a main conductor ranging from 35 to 120 mm².

A 120 mm² connection range gives the terminal a wider application range in power distribution systems where larger cables are required.

The main connection can be combined with several smaller outgoing conductors, creating a practical transition between the incoming power line and downstream circuits.

This makes the JHUKK-250 a suitable option for installations where conventional small-size terminal blocks do not provide enough conductor capacity.

Four Conductor Ranges in One Unit

The JHUKK-250 is designed around four different conductor connection groups:

• 35–120 mm² × 1
• 6–35 mm² × 2
• 2.5–16 mm² × 5
• 2.5–10 mm² × 4

This arrangement provides flexibility for mixed-size cable installations.

Instead of selecting separate connection components for different cable sections, installers can use one distribution terminal to organize multiple conductors in the same location.

For electrical panel builders, this can make the internal wiring layout easier to plan, particularly when a main supply needs to be divided into several branch circuits.

250A Rated Current

The JHUKK-250 is rated for 250A, making it suitable for electrical applications with substantial current requirements.

The higher current rating is one of the main characteristics that separates this model from smaller JHUKK products.

It can be considered for power distribution systems, industrial machinery and electrical equipment where a larger current capacity is required.

The actual application should always be selected according to the complete electrical system design, conductor specifications and applicable installation requirements.

690V IEC Rating

The terminal is rated at 690V IEC.

This rating makes the JHUKK-250 suitable for various industrial electrical distribution and connection environments.

For project selection, users should consider the operating voltage, current, cable size, installation environment and relevant local electrical standards together rather than relying on a single product parameter.

PA Nylon Insulating Housing

The housing is made from PA Nylon and has a UL94V0 flame-retardant grade.

The insulating enclosure provides structural support for the internal connection components while separating the conductive area from the surrounding installation.

The material selection is suitable for electrical equipment where flame-retardant insulation is an important consideration.

Its molded structure also gives the terminal a clean and compact appearance for installation inside electrical cabinets.

Nickel-Plated Brass Connection Components

The conductive metal components use nickel-plated brass.

The combination of brass and nickel plating provides a suitable material construction for electrical connection applications.

The plated surface also gives the metal components additional surface protection.

This construction is intended for industrial wiring and power distribution environments where reliable component construction is required.

Transparent Cover for Easier Checking

The JHUKK-250 features a transparent cover over the connection area.

This allows installers and maintenance personnel to see the internal connection area more easily during inspection.

For electrical panels that require periodic checking, the visible cover can make it easier to observe the connection arrangement without immediately removing the protective cover.

The cover also provides physical protection for the connection area.

Multi-Branch Distribution Structure

The JHUKK-250 provides a total connection configuration of 1 + 2 + 5 + 4.

This layout is designed around the different conductor sizes used in practical distribution systems.

A large incoming cable can be connected through the 35–120 mm² position, while smaller conductors can be arranged through the additional connection groups.

This makes the terminal suitable for applications where one power source needs to serve several different branch circuits.

Useful for Electrical Panel Assembly

Panel manufacturers often need to arrange components within a limited cabinet space while keeping different cable routes clear.

With dimensions of approximately 47 × 95 × 50 mm, the JHUKK-250 provides a dedicated distribution point without requiring multiple independent terminal components for every conductor group.

Its compact form can help panel builders plan the internal layout around the main incoming cable and branch connections.

Typical Applications

The JHUKK-250 can be considered for:

• Main power cable distribution
• Industrial electrical cabinets
• Power distribution panels
• Electrical control equipment
• Industrial machinery
• Power supply systems
• Large cable connection
• Multi-branch wiring
• Industrial electrical installations
• Equipment power distribution

Its combination of 250A capacity and 35–120 mm² main cable compatibility makes it particularly relevant to installations involving larger conductors.

A Practical Choice for Mixed-Size Wiring

Electrical distribution systems do not always use the same cable size for every circuit.

A main supply cable may be considerably larger than the conductors used for downstream equipment. The JHUKK-250 addresses this requirement by providing several conductor ranges within one distribution component.

This allows different cable sizes to be brought together in a structured connection arrangement.

For installers, this can help reduce the number of separate connection points and create a cleaner internal wiring layout.

Part of the JHUKK Product Range

The JHUKK-250 belongs to the JHUKK range of electrical distribution terminals developed by JINH.

Different models in the range are available for different current levels and conductor configurations.

TheJHUKK-250 is positioned toward applications requiring 250A current capacity and large conductor connections up to 120 mm².

It can be used by electrical equipment manufacturers, distribution panel builders, wholesalers, contractors and system integrators looking for a compact component for large-cable power distribution.