Product Overview

The CCX3-2 (CCX) series compact busbar trunking system is a flexible and reliable power distribution solution. With its comprehensive branch units and detailed, three-dimensional CAD‑based on‑site routing design, it provides an optimized power transmission solution tailored to meet your specific engineering requirements at the job site.

1. Reasonably structured and quick to install;

A unique structural design enables the busbar system to exhibit exceptional short-circuit withstand capability and to mitigate harmonic distortion in the main feeders.

The busbar features a compact overall footprint and offers a variety of flexible routing configuration units.

Regardless of whether it is installed horizontally in a vertical orientation, horizontally in a horizontal orientation, or vertically in a shaft, it always features a stable mounting plane, and its current-carrying capacity remains unaffected by any…
The influence of the installation configuration.

Structural features

The CCX3-2 (CCX) series busbar trunking system employs a well‑designed “sandwich” configuration in which the phase conductors are tightly stacked, resulting in a more compact profile and reduced overall footprint. This design also enhances the dynamic and thermal stability of the busbar system, yielding low impedance and reduced voltage drop, while effectively preventing the chimney effect that can occur during a fire.

All-aluminum casing
 

1. The integral aluminum alloy side‑plate structure encloses the conductor within a metal enclosure, completely preventing moisture ingress and the penetration of harmful particulates. This ensures that the busbar assembly achieves a true IP54 protection rating.

2. The special aluminum housing forms a non‑magnetic choke, which suppresses the transmission of interphase eddy currents in high‑current busbars, reduces the passage of harmonic currents through the main busbar, mitigates heat generation caused by these factors, lowers voltage drop over long transmission distances, and significantly enhances the current‑carrying capacity of the busbar.

3. The aluminum side‑plate structure, which ensures tight contact with the conductor throughout, enables direct heat transfer and dissipation from multiple surfaces—including the side plates and cover plates—thereby enhancing the busbar system’s thermal performance and increasing its current‑carrying capacity.

4. An integral grounding system is established within the enclosure. Users may select this all‑aluminum enclosure, which offers more than 50% of the conductor’s rated current capacity, as the grounding conductor. In the event of a high‑current ground fault, the fault current can first be efficiently conducted through the large‑cross‑section aluminum enclosure, thereby ensuring the safe operation of the entire busway system and the safety of operators.

Connector assembly

It is available in two configurations: one is the conventional type, featuring an insulated bolt‑locking design; the other adopts the advanced single‑arm bolt‑locking system widely used internationally, which requires only a torque wrench to tighten the high‑strength bolt on one side, eliminating the need for additional auxiliary tools. Refer to the specified torque values for each bolt size. The connector can also be equipped with a single‑arm, double‑ended torque bolt; when the tightening torque reaches the set value, one end of the bolt will automatically shear off, leaving the other end intact for future maintenance or removal, thus obviating the need for a torque wrench during operation.

The connector’s well‑designed structure allows each busbar unit to be easily inserted from the top; large, spherical washers inside the pressure plates on both sides ensure uniform contact pressure throughout the joint, effectively dampening vibrations and maintaining stable electrical continuity under a wide range of environmental conditions. All connectors of the same specification are fully interchangeable, enabling flexible installation of the busbar system.

Technical Specifications
 

1. The CCX3-2 (CCX) busbar trunking system operates at a frequency of 50–60 Hz, with rated currents ranging from 250 A to 3,150 A, and is designed for three-phase four-wire or three-phase five-wire power distribution systems with a rated insulation voltage of 1,000 V or less.

2. The busbar trunking system shall withstand a test voltage of 3,750 V at 50 Hz for 1 minute without breakdown or flashover.

3. When the busbar carries its rated operating current continuously, the temperature rise of any conductor shall not exceed 60 K.

4. Busbar Current Ratings and Performance Table:

250A- 1000A
 

1250A-31 50A

Reference dimensions of the plug-in box exterior
 

Busbar tap-off box
 

Tap-off Box
◆Economy‑class door opening operation
◆Outdoor Operation
◆ Electric Remote Operation
◆ Current ratings: 100A, 250A, 400A, 630A
◆The switch configuration can be customized according to the user’s preference.
 

Connector box housing dimensions