RT-CMC is an aluminum alloy compact busway system designed for low-voltage power transmission and distribution in industrial and commercial projects. This busbar trunking system uses a compact sandwich structure with silver-plated copper conductors and an aluminum alloy enclosure to support efficient power distribution, reduced installation space and reliable system operation.
The RT-CMC series is suitable for power distribution applications in industrial plants, commercial buildings, high-rise buildings, airports, stations, exhibition halls, museums and other public facilities. With a rated current range from 400A to 6300A, the system can be used for projects that require compact layout, stable electrical performance and flexible installation.
As a compact busway manufacturer and busbar trunking supplier, ZHERUTONG provides RT-CMC systems for projects that need a practical and space-saving alternative to conventional cable distribution.
The enclosure is made of extruded aluminum alloy with surface treatment for improved corrosion resistance. The aluminum housing also helps reduce system weight and supports heat dissipation in continuous operation.
RT-CMC busbar trunking uses silver-plated copper conductors for reliable conductivity, anti-corrosion protection and stable current carrying performance.
The compact sandwich design helps save installation space and supports low reactance, low temperature rise and efficient power transmission. This structure is suitable for projects where power density and layout efficiency are important.
The close conductor arrangement and enclosure design help reduce voltage drop and support effective heat dissipation, making the system suitable for industrial and commercial power distribution.
| Code | Name | Code | Name | Code | Name |
| A | Straight section busbar without socket | BR | Variable capacity joint | TC | T-type vertical joint |
| A1 | One socket straight section busbar | FX | Plug in switch box | XS | X-type horizontal joint |
| A2 | Two socket straight section busbar | JX | Initial incoming box (Initial outlet box) |
XC | X-type vertical joint |
| S | Starting busbar | LS | L-type horizontal joint | ZS | Z-type horizontal joint |
| Z | Terminal cover | LC | L-type vertical joint | ZC | Z-type vertical joint |
| P | Expansion joint | TS | T-type horizontal joint | T | Adjust the connector |
Example: RTMC37T-1250A/4-3000 represents a four wire straight copper conductor dense busbar with a rated current of 1250A and a length of 3000mm.
1: Rated insulation voltage (V): 690
2: Rated operating voltage (V): 380
3: Power frequency impulse withstand voltage (v/min): 3750
4: Rated working current (A): Bus duct: 400, 500,~5000, 5500, 6300, diversion box: 63, 250, 400, 630
5: Rated ultimate short-circuit breaking capacity IOU (KA) splitter box: 5, 20, 30
6: Rated short-time withstand current IOW (KA/S) bus duct: 20, 50, 65, 100
7: Rated peak short-time withstand current IDK (KA) bus duct: 40, 105, 143, 220
8: Protection level: IP40~IP65
Special wiring for protective conductor (PE) of the shell: 12, 30, 39, 60
Bus duct shell: 24, 63, 82, 132

| Rated Current(A) | Standard Size |
Minimum Size | ||||
| Copper | L | Type | A | D | E | L |
| 400 | 400 | III | 180 | 140 | 55 | 335 |
| 500 | 400 | III | 180 | 140 | 55 | 335 |
| 630 | 400 | III | 180 | 140 | 55 | 335 |
| 800 | 400 | III | 180 | 140 | 55 | 335 |
| 1000 | 400 | III | 180 | 140 | 55 | 335 |
| 1250 | 400 | III | 180 | 200 | 100 | 335 |
| 1600 | 400 | III | 180 | 230 | 100 | 335 |
| 2000 | 400 | II | 180 | 250 | 110 | 365 |
| 2500 | 400 | II | 220 | 250 | 110 | 365 |
| 3200 | 400 | I | 220 | 370 | 175 | 380 |
| 4000 | 400 | I | 250 | 370 | 175 | 380 |
| 4500 | 400 | I | 250 | 370 | 175 | 380 |
| 5000 | 400 | I | 250 | 400 | 185 | 380 |
| 5500 | 400 | I | 250 | 450 | 185 | 380 |
| 6300 | 400 | I | 250 | 450 | 200 | 380 |
All dimensions are in millimetersw

| Copper | Diagram | A(mm) | B(mm) | C(mm) | H(mm) |
| 400 | 1 | 40 | - | - | 180 |
| 500 | 1 | 60 | - | - | 180 |
| 630 | 1 | 40 | - | - | 180 |
| 800 | 1 | 60 | - | - | 180 |
| 1000 | 1 | 60 | - | - | 180 |
| 1250 | 2 | - | 100 | - | 180 |
| 1600 | 2 | - | 100 | - | 180 |
| 2000 | 2 | - | 130 | - | 220 |
| 2500 | 2 | - | 150 | - | 220 |
| 3200 | 3 | - | - | 250 | 250 |
| 4000 | 3 | - | - | 250 | 250 |
| 4500 | 3 | - | - | 280 | 250 |
| 5000 | 3 | - | - | 280 | 250 |
| 5500 | 3 | - | - | 280 | 250 |
| 6300 | 3 | - | - | 280 | 250 |
RT-CMC aluminum alloy busway is designed for low-voltage power distribution in:
Industrial plants, manufacturing facilities, commercial buildings, high-rise buildings, airports and stations, exhibition halls and museums, other public and utility buildings.
Compact structure for space-saving installation
Copper conductor for reliable electrical performance
Aluminum alloy enclosure for reduced weight and corrosion resistance
Available current range from 400A to 6300A
Suitable for industrial and commercial power distribution
Optional plug-in distribution for flexible branch power supply
RT-CMC compact busway is designed for horizontal and vertical installation. The system can be matched with standard connection units and plug-in distribution components to support practical installation and maintenance requirements.
For quotation and product selection, it is recommended to provide:
Rated current
Operating voltage
Installation direction
Indoor or outdoor application
Protection level requirement
Plug-in distribution requirement
Project layout or length information
A compact busway system is a prefabricated power distribution system that uses enclosed conductors to transmit electricity in a compact layout. It is often used as an alternative to traditional cable distribution in industrial and commercial buildings.
Busbar trunking systems are typically used where projects require compact layout, easier routing, modular installation and efficient power distribution over medium to high current ranges.
RT-CMC compact busway is available from 400A to 6300A.
It can be used in industrial plants, commercial buildings, high-rise buildings, airports, stations and other public or utility facilities.
Yes. The system can be matched with plug-in boxes for branch power distribution according to project requirements.
Please send your required current rating, voltage, installation direction, protection requirement and project layout information for selection support.
Looking for a compact busway manufacturer or busbar trunking supplier for your project? Contact ZHERUTONG with your current rating, voltage and layout requirements for product selection and quotation support.