What type of electrical distribution box is used in shopping malls

Shopping malls typically use a combination of low-voltage distribution cabinets, commercial distribution panels, and ATS emergency systems to manage power safely and efficiently.Types of Distribution Boxes1. End Branch Control Distribution Boxes (4P-32A) These are used for store-level low-power distribution, such as lighting and small display cabinets. They feature a 4-pole design suitable for three-phase four-wire systems, providing protection for phase and neutral lines. Rated at 32A, they include automatic tripping for overloads or short circuits, ensuring safety for small loads . 2. Medium Load Distribution Boxes (125A) Installed at floor-level power hubs, these boxes handle medium-power equipment like ventilation systems and medium-sized air conditioning units. They use copper busbars to reduce energy loss and provide stable power distribution. Some models also include over/under-voltage protection for complex mall power grids . 3. Large Equipment Power Supply Boxes (200A, 7 Branches) These boxes supply high-power equipment clusters, such as central air conditioning units and large escalator groups. Each branch can carry 30–50A, and the boxes allow flexible expansion for future equipment additions . 4. Single-Phase ATS Cabinets Critical for emergency power supply, these cabinets automatically switch to backup power (e.g., diesel generators) within 0.2 seconds if the main supply fails. They are optimized for 220V single-phase loads like fire protection systems, POS machines, and monitoring equipment, and often include intelligent monitoring for real-time status and fault alarms .Structural Types of Low-Voltage Distribution CabinetsLow-voltage distribution cabinets in malls can be classified as:Fixed type: Suitable for simple distribution lines with fewer transformers.Drawer type: Easy to repair and replace, ideal for complex distribution lines.Power-controlled type: Controls start, stop, and reverse operations of motors.Combined type: Integrates multiple functions for high-power distribution requirements .Commercial Distribution PanelsMalls also use commercial distribution panels as central points to receive incoming power and distribute it to branch circuits. These panels include:Main breakers to control the entire panel.Bus bars (copper or aluminum) to carry electricity to circuit breakers.Circuit breakers to isolate faults without affecting the entire system. They handle higher loads, more circuits, and diverse equipment compared to residential panels, ensuring safe and reliable power distribution across the mall .Key FeaturesHigh reliability: Prevents outages that could disrupt operations or safety systems.Zoned control: Allows rapid fault isolation to minimize impact.Intelligent monitoring: Real-time temperature adjustment, fault warnings, and remote access via mobile or computer systems.Safety protections: Overload, short circuit, leakage, and arc protection . In summary, shopping malls employ a hierarchical and intelligent power distribution system combining low-voltage distribution cabinets, commercial panels, and ATS emergency systems to ensure stable, safe, and efficient electricity delivery to all areas and equipment.