Quality Floor-Standing Power Distribution Cabinet Enclosure Supplier

In addition to various types of distribution box enclosures, Shangming also offers floor-standing power distribution cabinet enclosures—a key component of our high-quality product lineup. Choose us as your long-term supplier to benefit from one-stop customized solutions and direct-from-factory pricing.

Key Features

High Load-Bearing Capacity: For our floor-standing power distribution cabinet enclosures, we typically utilize cold-rolled steel plates with a thickness of 2.0mm or greater, which are either welded or assembled to form the structure. This robust construction enables the cabinet to securely support heavy frame-type circuit breakers, large-cross-section copper busbars, and transformer cables.

Modular Design: The interior features a modular hole pattern system, allowing for the flexible adjustment of crossbeams and mounting plates to suit specific requirements. This design facilitates convenient upgrades and expansions whenever necessary.

Ventilation and Heat Dissipation: Given the high current levels typically present within the cabinet, the enclosure is equipped with exhaust vents at the top and air intake vents at the bottom to ensure effective airflow. Additionally, customers may request a custom configuration to integrate a forced-air cooling system into the product.

Common Cabinet Classifications

Based on their structural form, floor-standing cabinets are primarily divided into two major categories:

1. Fixed Type

Characteristics: Internal components are rigidly mounted via support brackets; once wired, they cannot be moved.

Applications: Features a simple structure and low cost; typically used in settings where requirements for continuous power supply are not extremely stringent.

Representative Model: GGD-type AC Low-Voltage Power Distribution Cabinet.

2. Draw-out Type / Removable Type

Characteristics: Each individual circuit is housed within a separate, independent drawer unit.

Applications: Extremely convenient for maintenance. If a specific circuit fails, the corresponding drawer can simply be pulled out and replaced with a new one, without the need to cut off the main power supply.

Representative Models: GCK, GCS, and MNS-type Advanced Power Distribution Cabinets.

Floor-standing vs. Wall-mounted Distribution Boxes: What Is the Difference?

Product Selection and Configuration Recommendations

Based on your specific project requirements, during the pre-sales phase, Shangming will recommend the most suitable configuration for you. Generally speaking, the application scenarios we most frequently support are listed below, accompanied by corresponding configuration recommendations.

1. Industrial Main Power Distribution

Recommended Configuration:

Cabinet Dimensions: 1800–2200mm (H) × 600–1000mm (W) × 600–1000mm (D)

Material: Cold-rolled steel sheet (≥1.5mm)

Protection Rating: IP30 / IP40

Structure: Single cabinet or coupled cabinets (modular/splittable)

Interior: Designed for installation of ACB / MCCB + Busbar System

2. High-Current / Main Incoming Line Systems

Recommended Configuration:

Width: ≥800mm

Depth: ≥800mm

Structure: Double-door or multi-door design

Interior Space: Supports high-current copper busbars; includes reserved space for top or bottom cable entry.

3. Automation Control / PLC Control Cabinets

Recommended Configuration:

Dimensions: 1600–2000mm (H)

Material: Powder-coated steel sheet / Stainless steel

Protection Rating: IP40 / IP54

Interior: Mounting plate + DIN rails

4. Outdoor Applications

Recommended Configuration:

Protection Rating: IP54 / IP65

Material: Stainless steel (304/316) or outdoor-grade powder-coated steel

Features: Rainproof canopy + Sealing strips + Anti-condensation design

5. Highly Corrosive Environments

Recommended Configuration:

Material: 304 / 316 Stainless steel

Protection Rating: IP55+

Surface Treatment: Anti-corrosion coating

How to Perform Routine Maintenance on a Floor-Standing Power Distribution Cabinet Enclosure?

1. Cleaning and Dust Removal

Use a dry non-woven cloth and a vacuum cleaner to remove accumulated dust from inside the cabinet; the use of wet cloths or direct blasts of compressed air is strictly prohibited.

Pay particular attention to cleaning the busbars, insulators, circuit breaker arc chutes, and ventilation channels.

2. Tightening of Electrical Connections

Inspect all bolted connection points for looseness; use a torque wrench to re-tighten them to the specified torque values.

If signs of oxidation or arcing damage are detected, the terminals must be polished or replaced.

3. Component Functional Testing

Circuit Breakers: Verify that manual opening and closing operations are smooth and that the tripping mechanism is responsive.

Contactors/Relays: Inspect the condition of the contacts for wear and verify that the coil resistance is within the normal range.

Capacitors: Check for signs of capacitance degradation, bulging, or electrolyte leakage.

SPDs (Surge Protection Devices): Verify that the status indicator window is green and that the degradation indicator has not been triggered.

4. Insulation Performance Testing

Use a 500V or 1000V megohmmeter to measure and confirm the following:

Phase-to-phase insulation resistance: ≥ 1 MΩ;

Phase-to-ground insulation resistance: ≥ 1 MΩ;

If the measured values fall below these standards, investigate for potential causes such as moisture ingress or contamination.

5. Mechanical Structure Maintenance

Inspect the guide rails and interlocking mechanisms of drawer-type units to ensure they are not sticking or binding. Lubricate moving parts using grease specifically designed for electrical equipment.

Periodically verify the functionality of the "Five-Prevention" (interlocking) safety mechanisms.