Name: RT-CMC Compact Busway System
Brand: ZHERUTONG
Availability: InStock
Rating: 5 (1 reviews)

Description

ZHERUTONG is a professional Compact Busway System manufacturer specializing in high-performance power distribution solutions. With advanced production technology and strict quality control, ZHERUTONG provides reliable compact busbar trunking systems designed for efficient power transmission in industrial plants, commercial buildings, data centers, and large infrastructure projects. Our compact busway systems feature high current capacity, low impedance, excellent heat dissipation, and flexible installation, ensuring safe and stable power distribution for modern electrical networks.

Compact Busway System Manufacturer

The RT-CMC Compact Busway System from ZHERUTONG is designed for high-current power distribution in commercial, industrial, and infrastructure projects. With a compact sandwich structure, closely arranged conductors, and low-impedance design, the system helps improve power distribution efficiency while reducing installation space in suitable applications.

As a compact busway system manufacturer, ZHERUTONG provides RT-CMC systems for transformer-to-panel connections, vertical shaft distribution, feeder routes, and other high-current power transmission requirements. The product range covers different current ratings, conductor options, protection levels, and functional units to support project-specific configuration.

What Is a Compact Busway System?

A compact busway system is a prefabricated electrical distribution system used to transmit and distribute high-current power in a more organized and modular way. It is commonly used as an alternative to conventional cable-based distribution in projects that require compact installation, stable power transmission, and flexible system configuration.

In electrical applications, busway is also referred to as bus duct or busbar trunking in many markets. For this reason, search terms such as busway electrical, electrical busway, and bus duct may all be related to compact busway systems, although the product type should always be matched to the actual project requirement.

Why Use Compact Busway for Power Distribution?

The RT-CMC series is developed for projects that require:

High-current power distribution, Compact installation space, Low impedance and low voltage drop, Modular routing and system expansion, Reliable performance in commercial and industrial environments, Compared with conventional cable distribution in suitable projects, a compact busway system can help simplify the power distribution route, support modular installation, and improve space efficiency.

Product Overview

RT-CMC Series Low-Impedance Compact Busway uses a sandwich structure with closely arranged conductors for overall heat dissipation. The compact structure occupies less space and is intended for safe and reliable power distribution in high-current applications.

The RT-CMC compact busway system is suitable for:

Three-phase three-wire systems

Three-phase four-wire systems

Three-phase five-wire systems

Rated operating voltage up to 690V

Rated insulation voltage up to 1000V

Rated operating current from 250A to 6300A

The system can be discussed with copper or aluminum busbar options according to project requirements.

Typical Applications

The RT-CMC Compact Busway System is suitable for applications such as: Industrial plants, Commercial buildings, High-rise buildings, Stadiums, Hospitals, Large commercial plazas, Transformer and distribution cabinet connections, Vertical shaft power distribution routes

Key Features of the RT-CMC Compact Busway System

Compact sandwich structure

Closely arranged conductors help create a compact power distribution structure for projects where installation space matters.

Copper or aluminum conductor options

Data for both copper and aluminum busbars is provided, allowing discussion based on application and project preference.

Flexible system configuration

The RT-CMC series includes straight units, plug-in straight lengths, elbows, terminal units, cable entry boxes, plug-in boxes, and related installation accessories.

Protection options for different environments

The system can be discussed with different ingress protection levels, including IP54, IP65, and up to IP66 depending on application requirements.

System Components

The RT-CMC Compact Busway System mainly includes:

Transformer incoming line unit

Fire barrier

Low-voltage cabinet feeder unit

Straight unit

Direction change unit

Tap-off unit

Installation accessories

These components allow the system to support feeder distribution, branch distribution, route changes, and installation in different project conditions.

Functional Units

Straight Unit

Standard straight lengths are generally 3000 mm or 4000 mm.

Plug-In Straight Length

Plug-in sections are designed for flexible tap-off configuration. Openings may be arranged according to load and future expansion requirements.

Vertical and Horizontal Elbows

Different elbow units are used to change busway direction, avoid obstacles, and adapt to vertical or horizontal routing conditions.

Terminal Busbar

Terminal units are used to close the busway route where required.

Cable Entry Box

Cable entry units are used for feeding or receiving power at the busway section according to system design needs.

Plug-In Box

The plug-in box distributes electrical energy from the busway to the load and is an important branch distribution unit in practical operation.

Technical Parameters

Resistance,Reactancc,lmpedance，Power step-down

Rated Current (A)	Resistance per Meter		Impedance per Meter	Power Step-down Meter (V) / Power Factor cosΦ
Rated Current (A)	Rcsistance meter (mΩ)	Rcsistance meter (mΩ)	Impcduncemeter (mΩ)	0.6	0.7	0.8	0.9	1
400	0.00088	0.00037	0.000118	0.058	0.062	0.065	0.067	0.062
630	0.00088	0.00037	0.000118	0.092	0.098	0.103	0.106	0.098
800	0.00064	0.00032	0.000084	0.090	0.095	0.099	0.101	0.091
1000	0.00054	0.00026	0.000075	0.094	0.099	0.104	0.106	0.096
1250	0.00039	0.00019	0.000053	0.086	0.091	0.095	0.097	0.087
1600	0.00028	0.00015	0.000037	0.081	0.085	0.089	0.090	0.080
2000	0.00022	0.00012	0.000031	0.081	0.085	0.088	0.089	0.078
2500	0.00017	0.00011	0.000025	0.084	0.087	0.089	0.088	0.074
3150	0.00015	0.00006	0.000025	0.075	0.081	0.086	0.089	0.084
5000	0.00006	0.00002	0.000015	0.061	0.068	0.073	0.075	0.078
6300	0.00006	0.00001	0.0000070	0.065	0.073	0.082	0.089	0.094

Rated Current (A)	Resistance per Meter		Impedance per Meter	Power Step-down Meter (V) / Power Factor cosΦ
Rated Current (A)	Rcsistance meter (mΩ)	Rcsistance meter (mΩ)	Impcduncemeter (mΩ)	0.6	0.7	0.8	0.9	1
250	0.00146	0.00028	0.000171	0.048	0.053	0.058	0.062	0.063
400	0.00116	0.00026	0.000152	0.063	0.069	0.079	0.080	0.080
630	0.00093	0.00024	0.000131	0.082	0.090	0.097	0.103	0.101
800	0.00077	0.00021	0.000108	0.087	0.095	0.102	0.108	0.106
1000	0.00058	0.00018	0.000086	0.085	0.093	0.099	0.104	0.101
1250	0.00044	0.00015	0.000062	0.082	0.089	0.095	0.099	0.094
1600	0.00032	0.00012	0.000049	0.080	0.086	0.091	0.094	0.089
2000	0.00029	0.00011	0.000045	0.091	0.098	0.103	0.107	0.100
2500	0.00022	0.00008	0.000031	0.084	0.091	0.096	0.100	0.094
3200	0.00016	0.00005	0.000024	0.075	0.082	0.088	0.092	0.088
4000	0.00013	0.00003	0.000015	0.069	0.076	0.083	0.088	0.088

Straight Length：

The straight length without outlets.

The standard length is either 3000mm or 4000mm,the minimum length is 460mm.

Current Rating Code	Current Rating (A)	High (mm)
Current Rating Code	Current Rating (A)	RT-CMC	RT-CMA
02	250	/	103
04	400	103	113
06	630	103	128
08	800	113	143
10	1000	125	168
12	1250	148	203
16	1600	183	242
20	2000	223	293
25	2500	273	392
32	3200	352	472
40	4000	432	592
50	5000	532	/
63	6300	701	/

Note: The width is uniformly 125mm

Short Circuit Current Rating：

The RT-CMC busway provides stable and efficient power transmission, featuring exceptional short-circuit withstand capability validated by third-party CCC certification.

Copper

Rated Current (A)	Rated Short-time Withstand Current (kA)	Rated Peak Withstand Current (kA)
Rated Current (A)	Rated Short-time Withstand Current (kA)	Rated Peak Withstand Current (kA)
400/500/630/800	30	63
1000/1250	50	105
1600/2000	65	143
2500/3200	80	176
4000/5000/6300	100	220

Aluminum

Rated Current (A)	Rated Short-time Withstand Current (kA)	Rated Peak Withstand Current (kA)
Rated Current (A)	Rated Short-time Withstand Current (kA)	Rated Peak Withstand Current (kA)
250/400	15	30
630/800	30	63
1000/1250	50	105
1600/2000	65	143
2500/3200/4000	80	176

Copper Busbar

Rated Current	A	B	C	M	Type
250	—	—	—	—	—
400	25	50	—	Φ12	I
630	25	50	—	Φ14×20	I
800	25	50	—	Φ14×20	I
1000	25	50	—	Φ14×20	II
1250	25	50	50	Φ14×20	II
1600	25	50	50	Φ14×20	III
2000	25	50	50	Φ14×20	III
2500	25	50	50	Φ14×20	IV
3200	25	50	50	Φ14×20	II
4000	25	50	50	Φ14×20	III
5000	25	50	50	Φ14×20	IV
6300	25	50	50	Φ14×20	III

Aluminum Busbar

Rated Current	A	B	C	M	Type
250	25	50	—	Φ14×20	I
400	25	50	—	Φ14×20	I
630	25	50	—	Φ14×20	I
800	25	50	—	Φ14×20	I
1000	25	50	—	Φ14×20	II
1250	25	50	50	Φ14×20	III
1600	25	50	50	Φ14×20	III
2000	25	50	50	Φ14×20	IV
2500	25	50	50	Φ14×20	III
3200	25	50	50	Φ14×20	III
4000	25	50	50	Φ14×20	IV
5000	—	—	—	—	—
6300	—	—	—	—	—

Cable Entry BoX

● Individual cablc entry units arc used to implement feeding or receiving power with a section of the Busbar or it is the device that used without overcurrent protection.

● The maximum current of the cable entry unit is 5000A.

● Both multi-corc and singlc-corc cablcs can be used in the cable entry boxes.As long as thecable section does not exceed 300mm2 , it can be installed directly in the cable entry box

Copper Busbar
Rated Current (A)	Three-phase four-wire			Three-phase five-wire
Rated Current (A)	Length L (mm)	Width W (mm)	Height H (mm)	Length L (mm)	Width W (mm)	Height H (mm)
200	—	—	—	—	—	—
400	400	400	178	400	520	178
500	400	400	178	400	520	178
630	400	400	178	400	520	178
800	400	400	208	400	520	208
1000	400	400	223	400	520	223
1250	400	400	248	400	520	248
1600	400	400	278	400	520	278
2000	400	400	318	400	520	318
2500	400	400	368	400	520	368
3200	400	400	447	400	520	447
4000	400	400	527	400	520	527
5000	400	400	627	400	520	627

Aluminum Busbar
Rated Current (A)	Three-phase four-wire			Three-phase five-wire
Rated Current (A)	Length L (mm)	Width W (mm)	Height H (mm)	Length L (mm)	Width W (mm)	Height H (mm)
200	400	400	198	—	—	—
400	400	400	208	400	520	198
500	400	400	218	400	520	208
630	400	400	223	400	520	218
800	400	400	238	400	520	223
1000	400	400	263	400	520	238
1250	400	400	298	400	520	263
1600	400	400	348	400	520	298
2000	400	400	417	400	520	348
2500	400	400	487	400	520	417
3200	400	400	587	400	520	487
4000	400	400	667	400	520	587
5000	—	—	—	400	520	667

Plug-in box Dimension
Current Rating (A)	Length Length (mm)	Width Width (mm)	Height Heigh (mm)
100	360	250	250
160	400	250	250
250	520	270	270
400	650	310	310
630	800	340	340
800	1200	420	420

Minimum Distance Between Plug-in box Installation

Current level for plug-in box	L (mm)
100	150
160	175
250	195
400	210
630	230
800	260
1000	300

Installation and Project Discussion

For buyers researching compact busway system installation, installation details depend on current rating, conductor type, route direction, support spacing, plug-in configuration, and project layout. Horizontal ceiling installation, Minimum distance between busbar installation,

Minimum distance between plug-in box installation, Transformer connection, Distribution cabinet connection, On-site installation arrangement,

For project discussion, it is helpful to prepare: Current rating, Voltage, Conductor preference, Installation direction, Straight length requirement, Tap-off requirement, Drawings or route layout if available

FAQ

What is a compact busway system?

A compact busway system is a prefabricated electrical distribution system used to transmit and distribute high-current power through an enclosed and modular conductor system.

What is busway in electrical distribution?

In electrical distribution, busway refers to a prefabricated power distribution system used as an alternative to traditional cable and conduit arrangements in many commercial and industrial projects.

What is the difference between busway and bus duct?

In many markets, the two terms are used closely or interchangeably. The exact usage may depend on region, product structure, and supplier terminology.

What are the types of busbar trunking?

Busbar trunking systems may include compact busway, lighting busway, feeder busway, plug-in busway, and other project-specific configurations depending on current range and application.

Where can compact busway be used?

Compact busway can be used in industrial plants, commercial buildings, hospitals, high-rise buildings, stadiums, and other projects that require reliable high-current power distribution.

How is a compact busway system installed?

Installation depends on project layout, routing direction, support spacing, and system configuration. Straight units, elbows, plug-in sections, cable entry units, and accessories are selected according to project needs.

Can the RT-CMC compact busway system be customized?

Project-related options such as current rating, conductor material, ingress protection, straight length, and component selection can be discussed according to application requirements.

Request a Quote

If you are looking for a Compact Busway System manufacturer for high-current power distribution projects, contact ZHERUTONG for quotation and configuration support.

To help us respond more efficiently, please send:

Application scenario

Current rating

Voltage

Copper or aluminum preference

Protection requirement

Installation direction

Drawings or layout information if available

Get a Quote from ZHERUTONG
Email: rtdq@rtbusway.com
Phone: +86-13867770913

Product

RT-CMC Compact Busway System