Low Current Enclosed Busway

Precision Coverage for Low-Current Power Distribution

The Low Current Enclosed Busway is designed for full-scenario low-load power distribution, with a rated current range of 25A–400A. It supports AC three-phase four-wire or five-wire systems, with a rated voltage up to 660V and frequencies of 50Hz or 60Hz. As a professional China manufacturer and supplier, Fenghua Electric provides solutions ideal for small commercial facilities, office branch circuits, automation control cabinets, and medical laboratory equipment. Both air-insulated and compact-insulated types are available for flexible, customized power transmission.

Core Types: Dual Solutions for Diverse Applications

1. Air-Insulated Busway

Featuring an air-gap insulation structure combined with epoxy insulation blocks, this system ensures high insulation resistance (≥100MΩ) and withstands 3750V power frequency voltage for 1 minute without breakdown. The design enhances heat dissipation, keeping conductor temperature below 60°C and enclosure rise within 30K. The housing is formed from cold-rolled steel or aluminum-magnesium alloy with a reinforced corrugated structure for strong mechanical performance. High-purity T2 copper conductors (≥99.95%) with tin plating ensure low resistance and stable conductivity. Aluminum conductors are optional for cost-effective projects.

2. Compact-Insulated Busway

This type uses epoxy resin or advanced polymer materials to tightly wrap conductors, combined with flame-retardant XLPE heat-shrink tubing, meeting RoHS environmental standards. Its compact structure reduces space requirements and prevents chimney-effect fire risks, offering enhanced fire safety. With protection ratings up to IP54, it performs well in humid and dusty environments. Optimized design reduces impedance and power loss, ensuring high transmission efficiency with voltage drop ≤2.5% over 110m. The insulation system operates reliably from -200°C to +200°C, providing a service life of over 30 years.

Exceptional Performance: Rigorous Standards Ensure Stable Operation

Certified Quality Assurance

The Low Current Enclosed Busway is manufactured in strict accordance with international standards. Each unit undergoes comprehensive testing before delivery, ensuring consistent quality, verified performance, and reliable power transmission for various applications.

High Protection Level (IP40–IP65)

The enclosure is designed with protection ratings from IP40 to IP65, with higher ratings available for outdoor use. Advanced puncture-riveting technology creates a seamless, fully enclosed structure, improving sealing performance and effectively preventing dust and moisture ingress. It is well-suited for harsh environments such as high humidity, marine climates, and salt mist conditions, with proven resistance through 2,000-hour salt spray testing.

Strong Short-Circuit & Vibration Resistance

The system features excellent short-circuit withstand capability. The aluminum or low-magnetic steel enclosure reduces eddy current losses and thermal rise, improving current-carrying efficiency. Built-in shock-absorbing structures protect internal conductors and insulation components from mechanical vibration and external impact. Flexible connections and rubber isolation pads further enhance system stability when connected to transformers or distribution equipment.

Safe and Efficient Grounding System

The integrated grounding design uses a highly conductive aluminum alloy enclosure with a cross-sectional area significantly larger than the conductor itself. This ensures low grounding resistance, meeting safety standards and providing dependable protection for both equipment and operators.

Convenient Installation and Maintenance: Reducing Total Project Lifecycle Costs

Flexible Installation Methods: Supports multi-directional installation—both horizontal and vertical—and can be quickly secured to electrical risers, equipment rooms, or ceilings using mounting brackets. The modular design facilitates rapid assembly; standard sections are available in lengths of 3m, 6m, or 8m (customizable to user specifications). Furthermore, tap-off outlets can be positioned at any desired location according to client requirements, provided the spacing between outlets is no less than 0.6 meters. This flexibility allows for convenient future capacity expansion and route adjustments, significantly shortening the installation cycle.

User-Centric Design Details

The tap-off units feature a plug-in/plug-out lifespan of ≥200 cycles. Combined with connectors featuring phase-error prevention designs, the risk of installation errors is drastically reduced.

Utilizing a butt-joint installation method, securing the connection bolts requires only a single wrench, making the operation simple and effortless. All products across various current ratings utilize a standardized cover plate, ensuring a high degree of standardization, strong interchangeability, and convenient interface adaptability for capacity adjustments.

Equipped with corrugated expansion joints, the system allows for two degrees of freedom in adjustment—both horizontally and vertically. This not only accommodates expansion and contraction caused by temperature fluctuations but also compensates for structural deviations resulting from foundation settlement. This innovation resolves the shortcomings of traditional sliding-plate expansion devices, such as poor protection ratings, cumbersome installation, and unreliable operation.

Simplified Maintenance Scheme: Routine maintenance requires only periodic checks of connector tightness and the integrity of the housing enclosure. In the event of issues such as reduced insulation strength, the internal components can be dried out via a brief period of no-load operation. Should localized overheating occur, the issue can be quickly resolved by troubleshooting the connection points or adjusting the load, resulting in low maintenance costs.

Typical Application Scenarios

The Low Current Enclosed Busway is widely used in:

▪Commercial offices for lighting and equipment power distribution

▪Industrial automation systems for control cabinets and PLCs

▪Medical and laboratory environments requiring stable, clean power

▪Building infrastructure for low-voltage and emergency systems

▪Factory upgrades where efficient retrofitting is required

Selection Guide: Scientifically Matching Project Requirements

Current Rating Selection: Select the appropriate rating based on the actual load current; it is recommended to include a 10%–20% safety margin to accommodate future capacity expansion needs and ensure long-term product stability.

Insulation Type Selection: For dry environments with low ambient temperatures and minimal current fluctuations, air-insulated systems are the preferred choice; for space-constrained, high-humidity, or dusty environments, compact-insulated systems are recommended.

Protection Class Determination: For standard indoor scenarios, an IP40 rating is sufficient; for outdoor or humid/dusty environments, ensure a protection class of at least IP54; for marine climate environments, products with a higher protection class are advised.

Conductor Material Considerations: For projects involving sustained high loads or requiring exceptional stability, copper conductors are the preferred choice; for projects with limited budgets and minimal load fluctuations, aluminum alloy conductors may be selected.

Customization for Special Requirements: Should you have specific requirements regarding installation environments, current ratings, or functional features, please contact our professional team; we will provide you with a customized product solution tailored to your needs.