Pxt distribution box model

PXT distribution boxes are surface-mounted electrical distribution cabinets designed for low-voltage AC systems, offering flexible configurations, protection features, and compliance with international standards.

Overview and Applications

The PXT distribution box is widely used in power plants, substations, factories, mines, and high-rise buildings for lighting, power feed, and protection of low-voltage circuits (AC 400V and below) against overload, short circuit, undervoltage, and leakage . It is suitable for frequent switching and low-power lines, making it versatile for industrial and commercial electrical distribution.

Structural Components

A typical PXT distribution box includes:

• Box body and face cover: The main enclosure, which can be all-plastic, plastic-faced iron bottom, all-steel, or stainless steel .
• Transparent cover door: Allows visual inspection without opening the box.
• Installation rail and conductive bars: For mounting circuit breakers and connecting electrical circuits.
• Incoming line shield and bus baffle: Ensures safe and organized wiring.
• Neutral line and grounding terminal blocks: For proper earthing and safety.
• Heat dissipation system: Includes fans, louvres, and dual-layer filters to prevent dust, insects, and moisture from entering, protecting internal electronic devices .

Model and Specification Interpretation

The PXT model series is interpreted as follows :

• PXT: Surface-mounted distribution box.
• (R): Optional concealed installation.
• K: Series of wiring methods.
• X/X: Rated current / short-time withstand current (e.g., 250/10 indicates 250A rated current and 10kA short-time withstand current).
• IPX: Protection level against dust and water ingress. This allows customization according to user requirements, including rated current, installation type, and environmental protection.

Standards and Compliance

PXT distribution boxes comply with IEC60439-1 and GB7251.3 standards, ensuring safety, reliability, and compatibility with modern electrical systems . They are designed for high space utilization, stable operation, and environmental protection, with flexible installation options and universal application.

Advantages

• Compact and lightweight design with high space efficiency.
• Reliable operation with protection against moisture, dust, and insects.
• Flexible configuration to meet different user needs.
• Easy installation and maintenance, suitable for both manual and automatic switching.
• Durable and safe, extending the lifespan of internal electrical devices . PXT distribution boxes are ideal for users seeking a versatile, safe, and standard-compliant solution for low-voltage electrical distribution in industrial, commercial, and residential settings.