NHXLC Fire-Resistant Compact Busway

NHXLC Fire-Resistant Compact Busway is designed for low-voltage power distribution systems that require both compact electrical transmission and fire-resistant circuit continuity. As a fire resistant busway manufacturer and supplier, we provide this compact bus duct system for projects where fire safety, stable power supply, and installation efficiency are critical.

This fire resistant busway combines the electrical advantages of a compact laminated busway with a dedicated fire-resistant insulation and enclosure design. It uses high-quality copper busbars as conductors and adopts a fire-resistant insulation system based on mica and high-strength ceramic materials. The enclosure is designed with a dual-layer thermal barrier, and both internal and external components are treated to improve fire resistance and thermal protection.

The NHXLC series is suitable for power distribution applications with rated voltage up to 690V, rated current from 250A to 6300A, and frequency of 50–60Hz.

Product Overview

Our fire resistant compact busway is developed for applications where power supply must remain available during fire exposure for a defined period. It retains the compact structure, low impedance, and electrical efficiency of an insulated compact busway, while adding fire-resistant construction for emergency and critical power circuits.

The system uses copper busbars insulated with mica and ceramic-based materials. The enclosure is designed with internal and external thermal protection layers to help reduce the impact of high temperature on the conductor system. This structure supports circuit integrity during fire exposure and also helps resist water ingress during firefighting conditions.

Key Fire-Resistant Structure

Compact laminated conductor design

The NHXLC series adopts a sandwich-type compact conductor arrangement. This structure helps reduce system impedance, improve electrical performance, and save installation space compared with more bulky traditional distribution methods.

Fire-resistant insulation system

The insulation system uses alumina ceramic components for support and a composite wrapping system around the copper conductors. The busbars are wrapped with polyimide and high-temperature mica tape to improve dielectric performance and thermal resistance under fire conditions.

Dual-layer enclosure protection

The enclosure is designed with a dual-layer thermal barrier structure. This design helps delay heat transfer into the busway body and improves resistance to flame exposure from outside the enclosure.

Fire and water resistance

The busway is designed not only for fire-resistant performance but also for resistance to water penetration during firefighting conditions. The page data indicates an IP68 protection rating, supporting use in demanding environments where enclosure integrity is important.

Product Features

Compact laminated bus duct structure for reduced footprint

Copper busbar conductor design for stable current carrying performance

Fire-resistant insulation based on mica and ceramic materials

Dual-layer enclosure with thermal barrier design

Designed to maintain circuit continuity during fire exposure

Water-resistant enclosure performance with IP68 protection rating

Low-smoke and low-pollution material direction for safer application environments

Suitable for emergency and critical power distribution systems

Typical Applications

NHXLC fire resistant busway is suitable for low-voltage power distribution systems where fire resistance and circuit continuity are important, such as: 

emergency power supply systems, fire protection circuits, commercial and public buildings, hospitals and other critical service facilities, industrial plants, 

power distribution routes requiring compact bus duct installation.

Selection should be based on current rating, operating voltage, route layout, environmental conditions, and the required fire resistance level of the project.

Insulation Configuration

The NHXLC series uses a dedicated fire-resistant insulation system with ceramic support components and high-temperature wrapping materials around the copper conductors. This structure is intended to improve both electrical insulation performance and resistance to fire exposure.

Fire Resistance and Protection

The page data indicates that the system can maintain continuous operation for not less than 90 minutes when exposed to an ambient temperature of 960°C. The technical parameter table also shows a fire resistance duration range of 60–180 minutes and a fire resistance temperature of 950°C.

The busway is also listed with an IP68 protection rating, supporting enclosure integrity against dust and water ingress in demanding operating environments.

Technical Parameters

Fire Resistant Compact Busway Installation

Fire resistant compact busway installation should be planned according to the route layout, fire compartment requirements, load conditions, and site environment. In practical projects, the installation design should consider straight sections, joint positions, support spacing, access for maintenance, and the required fire-resistant performance of the entire power distribution route.

For better configuration accuracy, project communication should include rated current, operating voltage, installation route, and fire protection requirements.

Why Choose ZHERUTONG as Your Fire Resistant Busway Manufacturer

As a fire resistant busway manufacturer and supplier, we support compact bus duct projects with product selection based on technical requirements rather than generic catalog matching alone.

Our team can support discussion on: rated current and voltage, compact bus duct routing requirements, fire-resistant power distribution applications, installation conditions and enclosure protection needs, product quotation based on project information.

If you are looking for a fire resistant bus duct manufacturer or compact bus duct supplier, please send us your project details for technical review and quotation support.

FAQ

What is a busway electrical?

A busway in electrical systems is a prefabricated power distribution system that uses enclosed conductors instead of traditional cable bundles for power transmission. It is commonly used where stable current carrying performance, structured routing, and easier installation are required.

What is a fire resistant busway?

A fire resistant busway is a busway system designed to maintain circuit continuity for a specified period under fire exposure. It usually combines fire-resistant insulation materials, thermal barrier structures, and a protected conductor enclosure.

Where is fire resistant busway used?

Fire resistant busway is commonly used in emergency power systems, fire protection circuits, hospitals, public buildings, industrial plants, and other projects where continued power supply is important during fire conditions.

Electrical busway manufacturers

Electrical busway manufacturers design and supply enclosed power distribution systems for different voltage classes, current ratings, and installation environments. For buyers, the key is to select a manufacturer whose product range matches the project’s electrical and fire protection requirements.

Busway vs bus duct

In many industrial and commercial applications, busway and bus duct refer to the same type of enclosed conductor system used for power distribution. “Bus duct” is often used in project and procurement language, while “busway” is also widely used in product and technical descriptions.

Request a Quote

Need a fire resistant busway or compact bus duct for your project?

Please send your rated current, operating voltage, installation route, and fire resistance requirements to ZHERUTONG. We will review your requirements and provide a suitable product recommendation and quotation.
Get a Quote from ZHERUTONG
Email: rtdq@rtbusway.com
Phone: +86-13867770913