P-LINE Low Voltage Busway system | High Current Busduct Manufacturer

Key Benefits

Full-series product matrix

P-LINE covers compact, fire-resistant, cast-resin and common-enclosure busducts, supporting copper, aluminum and copper-aluminum hybrid conductors.

Ultra-high protection class

The compact busduct reaches IP66 and cast-resin busduct reaches IP68, suitable for coastal, highly polluted and humid environments.

High-current and low loss

As high-capacity heavy current busduct, copper conductors support up to 6400 A and aluminum conductors up to 6300 A, with line voltage drop as low as 0.07 V/m.

Innovative rapid installation

The double-headed bolt connector provides automatic torque indication and doubles installation speed compared with traditional busduct connections.

Product Overview

P-LINE is a full-series low-voltage busduct product independently developed by NATUS Electric. It covers four major types: compact busduct, fire-resistant busduct, cast-resin busduct and common-enclosure busducts, meeting diversified power distribution requirements from 400 A to 6400 A.

Compared with traditional cable distribution and ordinary busducts, the low-voltage busduct uses a 3 mm-thick aviation-grade aluminum-magnesium alloy enclosure and an original slot design, ensuring excellent heat dissipation performance while providing high mechanical strength. The entire production process adopts digital intelligent manufacturing, integrating parametric design, automated wiring and digital processing to shorten the production cycle. The P-LINE Busduct System fully complies with GB/T 7251 and IEC 61439 international standards, with a protection class up to IP68, and is widely used in data centers, industrial plants, high-rise buildings, petrochemical facilities and other power distribution scenarios.

Product Structure

1. Enclosure system

3 mm-thick aluminum-magnesium alloy, I-shaped integrated forming, corrugated reinforced side plates, curved riveting between cover plate and side plates, with anodized or electrostatic powder-coated surface.

2. Conductor system

High-quality T2 electrolytic copper (purity ≥99.95%) or 6063 aluminum alloy conductors, tin-plated or silver-plated surface, with single-row, double-row and three-row configurations.

3. Insulation system

Class B halogen-free polyester film insulation, double-layer wrapping, up to 6 interphase insulation layers, and heat resistance temperature of 130℃.

4. Functional unit system

Includes straight section units, elbow units (L/Z/T type), connection units (transformer / distribution cabinet / cable) and plug-in box units.

The P-LINE busduct plug-in box unit provides tap currents ranging from 16A to 1250A. Its plug pins feature a "T"-shaped structure with silver plating to ensure reliable electrical continuity throughout the system.

The plug-in box incorporates multiple interlock mechanisms to prevent door opening during energized conditions, further safeguardin.

Technical Advantages

01.

Aviation-grade aluminum-magnesium alloy enclosure technology

Uses a 3 mm non-magnetic and environmentally friendly aluminum-magnesium alloy. The I-shaped structure is strong and lightweight; corrugated side plates increase heat dissipation area by 30% and reduce operating temperature rise; after surface treatment, it can be used long-term in coastal high-salt-spray environments.

02.

Full-process digital manufacturing technology

Industry-leading automated production line integrates parametric-driven design, automatic wiring, MES management and digital processing, ensuring high product precision, strong consistency and short delivery cycles.

03.

Comprehensive safety protection design

Fire-resistant busduct achieves 180 minutes of building fire resistance; compact structure prevents chimney effect; plug-in boxes use multiple interlocks to prevent misoperation; the enclosure provides good grounding continuity to ensure system safety.

Technical Specifications

Main Technical Parameters of Copper Conductor Busduct

Current (A)	Rated Short-Time Withstand Current (Icw) (kA)	Rated Peak Withstand Current (Ipk) (kA)	Resistance/m (mΩ)	Reactance/m (mΩ)	Impedance/m (mΩ)	Voltage Drop/m (V)	Weight/m Four-Wire (kg)	Weight/m Five-Wire (kg)
400	50	63	0.11	0.04	0.11	0.08	11.8	12.47
500	50	63	0.1	0.04	0.1	0.09	12.7	13.48
630	50	63	0.09	0.04	0.1	0.1	13.8	14.69
800	50	63	0.07	0.03	0.08	0.1	15.7	16.81
1000	50	63	0.06	0.03	0.07	0.11	18.8	20.24
1250	50	63	0.05	0.02	0.05	0.11	22.9	24.79
1600	80	220	0.03	0.02	0.04	0.1	28.9	31.46
2000	80	220	0.02	0.02	0.03	0.1	36.2	39.54
2500	80	220	0.02	0.01	0.02	0.1	46.4	50.85
3150	80	220	0.02	0.01	0.02	0.1	56.1	61.44
3200	80	220	0.02	0.01	0.02	0.1	58.4	63.74
4000	120	264	0.01	0.01	0.01	0.09	70.7	77.4
5000	120	264	0.01	0.01	0.01	0.08	91.1	100
6300	120	264	0.01	0.01	0.01	0.07	111.8	125.15
6400	120	264	0.01	0.01	0.01	0.07	116.4	129.75

Main Technical Parameters of Aluminum Conductor Busduct

Current (A)	Rated Short-Time Withstand Current (Icw) (kA)	Rated Peak Withstand Current (Ipk) (kA)	Resistance/m (mΩ)	Reactance/m (mΩ)	Impedance/m (mΩ)	Voltage Drop/m (V)	Weight/m Four-Wire (kg)	Weight/m Five-Wire (kg)
400	30	63	0.11	0.04	0.11	0.08	7.2	7.56
630	30	63	0.09	0.04	0.1	0.11	9.03	9.6
800	30	63	0.07	0.03	0.08	0.11	10.51	11.24
1000	30	63	0.06	0.03	0.07	0.11	13.2	14.13
1250	30	63	0.05	0.02	0.05	0.11	14.22	15.35
1600	80	176	0.03	0.02	0.04	0.11	17.2	18.66
2000	80	176	0.02	0.02	0.03	0.1	20.2	21.98
2500	80	176	0.02	0.01	0.02	0.1	27.8	30.07
3200	80	176	0.02	0.01	0.02	0.1	33.9	36.82
4000	80	176	0.01	0.01	0.01	0.09	39.82	43.39
5000	120	264	0.01	0.01	0.01	0.07	40.5	45.56
6300	120	264	0.01	0.01	0.01	0.07	45.36	51.03

Busduct Enclosure

No.	Description
1	P-LINE busduct uses a high-quality aviation aluminum-magnesium alloy as the enclosure material. The 3 mm non-magnetic and environmentally friendly material is lightweight and high-strength.
2	The P-LINE copper busduct uses an I-shaped structure. To ensure high structural strength and precision, the enclosure cover and side plates are formed in one process.
3	The cover plate and side plates use a curved riveting structure, making the overall fit tighter and raising the protection class to IP66.
4	The side-plate grooved slot design effectively increases heat dissipation area, improves overall heat dissipation performance and increases thermal stability during copper busduct operation.
5	The enclosure surface is anodized or electrostatic powder-coated for long-term use in environments with high air humidity, high salt content and severe pollution such as coastal areas.
6	The busduct enclosure has good grounding continuity and grounding capacity, and the enclosure can be used as a grounding conductor.

1. Data centers

High-current and low loss meet high-density power distribution needs; plug-in boxes allow flexible tapping and support later cabinet expansion; high reliability ensures continuous IT equipment operation.

2. Industrial plants

Fast installation supports rapid production line construction; modular design makes production line adjustment convenient; high-current capacity meets industrial load requirements.

3. High-rise buildings

Compact structure saves shaft space; flame-retardant and 180 min fire resistance meet fire protection requirements; long service life matches the building lifecycle.

4. Petrochemical industry

IP66 / IP68 high protection adapts to flammable, explosive and highly corrosive environments; non-magnetic enclosure avoids eddy-current heating; fully enclosed structure prevents dust ingress.

5. Rail transit

Good seismic resistance adapts to vibration during vehicle operation; low loss saves energy; maintenance-free design reduces operation and maintenance costs.

6. New energy industry

High-current capacity meets the needs of photovoltaic and wind power booster stations; rapid installation shortens project cycles; high protection suits outdoor environments.

Product FAQ

What product types does P-LINE busduct include, and where are they used?

It includes compact busduct, fire-resistant busduct, cast-resin busduct and common-enclosure busduct types. Compact busduct is suitable for general commercial and industrial distribution; fire-resistant busduct is suitable for fire passages, distribution rooms and areas with high fire protection requirements; cast-resin busduct is suitable for humid and highly polluted environments such as underground garages, tunnels and coastal areas; common-enclosure busduct is suitable for high-current long-distance transmission.

How should copper conductor and aluminum conductor busduct be selected?

Copper conductors have good conductivity, low loss and high mechanical strength, suitable for scenarios with high energy-saving requirements, high-current and limited installation space. Aluminum conductors are lightweight and lower-cost, suitable for long-distance and large-span installations where cost is sensitive.

What is the highest protection class of the busduct?

Compact busduct can reach up to IP66, providing complete dustproof and protection against strong water jets. Cast-resin busduct can reach up to IP68 and can be used under long-term immersion under certain pressure.

How long is the fire resistance time of fire-resistant busduct?

The P-LINE fire-resistant busduct can achieve 180 minutes of building structural fire resistance, meeting the highest requirements of GB 50016 Code for Fire Protection Design of Buildings.

How much faster is busduct installation than traditional cables?

With the innovative double-headed bolt connector, installation speed is doubled than traditional busduct and 3-5 times faster than cable tray systems, greatly shortening the project construction cycle.

Can non-standard lengths and special elbow units be customized?

Yes. Straight sections of any length from 0.3 m to 6 m can be customized, as well as non-standard L-type, Z-type and T-type elbow units of various angles to meet complex on-site routing requirements.

What is the service life of the busduct, and does it require frequent maintenance?

Normal service life exceeds 30 years. After commissioning, routine inspection is recommended every 3–5 years, mainly checking connector torque, insulation status and enclosure corrosion. Daily operation requires no maintenance.

Natus Electric Group Co., Ltd.

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