Low-voltage distribution boxes come in various models and specifications, designed for residential, commercial, and industrial applications, with compliance to IEC/EN standards for safety and performance.

Common Models and Series

1. Fixed Low-Voltage Switchgear

• GGD Series: Used in substations and power plants, featuring high breaking capacity, stable performance, and AC 50Hz rated voltage of 380V.
• GDH Series: Similar to GGD, with manufacturer-specific parameters for stable power supply.
• PGL Series: Widely applied in areas requiring reliable power distribution, offering compact and robust design . 2. Withdrawable Low-Voltage Switchgear
• GCK Series: Composed of power distribution and motor control cabinets, suitable for motor control or lighting, with 60Hz frequency and 660V working voltage.
• GCS Series: Rated at 400V AC, used in power plants, high-rise buildings, and industrial facilities with high power consumption.
• MNS Series: Compact, stable, and versatile, suitable for small power plants, industrial enterprises, and hotels . 3. Residential and Small Commercial Enclosures
• xComfort KLV Series (Eaton): Flush or hollow-wall mounted, modular 1- to 5-row enclosures, compliant with IEC/EN 62208, IEC/EN 60670-24, and IEC/EN 61439-3. Supports pre-wired or customizable configurations with modular switching and protection devices . 4. Industrial Low-Voltage Distribution Cabinets
• Main Distribution Boards (MDB): Heavy-duty cabinets with high continuous current ratings (1000A–6300A), integrating MCCBs, ACBs, smart meters, and copper busbars.
• Sub-Distribution Boards (SDB) and Final Distribution Boards (FDB): Step down power from MDBs, allowing selective isolation of circuits for maintenance without full facility shutdown. Certified to IEC 61439-1/-2, with IP protection up to IP55 and robust short-circuit withstand capacity .

Key Specifications

• Voltage Rating: Typically 380–660V AC for industrial applications; residential enclosures often rated for 230–400V AC.
• Frequency: 50Hz or 60Hz depending on regional standards and application.
• Protection: Integration of MCCBs, ACBs, RCDs, AFDDs, and overvoltage protection devices.
• Ingress Protection: IP20–IP55 depending on indoor or outdoor installation.
• Standards Compliance: IEC/EN 61439-1/-2/-3, IEC/EN 62208, IEC/EN 60670-24.
• Modularity: Many series allow flexible assembly of switching, protection, and metering devices for customized layouts .

Applications

• Industrial: Factories, mining, and power plants requiring high current capacity and fault tolerance.
• Commercial: High-rise buildings, hotels, and office complexes with complex power distribution needs.
• Residential: Small-scale energy distribution with modular, pre-wired, or customizable enclosures for safe and efficient power management .

Summary

Low-voltage distribution boxes are available in fixed, withdrawable, modular, and compact designs, each tailored to specific applications. They provide safe, reliable, and flexible power distribution, with compliance to international standards ensuring operational safety, fault tolerance, and ease of maintenance. Modern systems also integrate smart metering, modular protection devices, and pre-wired options to simplify installation and future expansion .