Low Voltage Switch Box AC Distribution Cabinet GGD GCK MNS Type Modular Structure

Our Low Voltage Switchgear range provides a versatile and comprehensive solution for power distribution, motor control, and reactive power compensation. Designed for AC 50/60Hz systems with rated voltages up to 690V, these cabinets are the backbone of modern industrial and commercial power infrastructure.

We offer three distinct cabinet architectures to meet various project requirements:

• GGD (Fixed Type): The economical "workhorse" for power plants and substations where infrequent maintenance is required.

• GCK (Withdrawable Type): Optimized for motor control centers (MCC), offering high functional density and easy drawer replacement.

• MNS (Modular Withdrawable): The highest tier of safety and flexibility, based on the ABB design, ideal for high-end industrial and infrastructure projects.

• Modular Structural Flexibility: The cabinet frames (C-profile or E-profile) are assembled using high-precision CNC-punched steel, allowing for flexible internal partitioning and easy future expansion.

• Superior Service Continuity: The withdrawable (GCK/MNS) designs allow individual functional units to be replaced or maintained without de-energizing the entire busbar system, minimizing plant downtime.

• Enhanced Safety Interlocking: Features advanced mechanical interlocks that prevent the withdrawal of functional units while the circuit breaker is closed, ensuring the highest level of operator safety.

• High Short-Circuit Withstand: Engineered with heavy-duty copper busbar systems capable of withstanding peak fault currents up to 100kA, ensuring system integrity during catastrophic events.

• Intelligent Heat Management: Integrated with natural ventilation slots and sensor-driven forced-air cooling systems to ensure stable operation even in high-load, high-ambient temperature environments.

1. Industrial Manufacturing: Main distribution for steel mills, petrochemical refineries, and automobile assembly lines.

2. Power Infrastructure: Low-voltage side distribution for 11kV/33kV substations and power plants.

3. Data Centers & Hospitals: Critical power hubs requiring high-reliability GCK/MNS withdrawable units for rapid maintenance.

4. Commercial Real Estate: Centralized power management for high-rise office towers, airports, and shopping malls.

• Turnkey Customization: We populate our cabinets with premium components from global brands (ABB, Schneider, Siemens) or high-quality domestic alternatives based on your project budget.

• Corrosion-Resistant Finish: Every enclosure undergoes a multi-stage pickling and phosphating process followed by an epoxy powder coating (Standard RAL 7035), providing a 20+ year service life.

• Pre-Shipment Factory Testing: Every unit undergoes rigorous Factory Acceptance Testing (FAT), including insulation resistance, dielectric strength, and mechanical sequence testing.

• Smart Monitoring Options: Can be equipped with intelligent meters and communication gateways (Modbus/Ethernet) for real-time power quality and temperature monitoring via SCADA.

Q: What is the difference between GCK and MNS?

A: While both are withdrawable, MNS is highly modular and typically offers higher current ratings and better internal separation (up to Form 4), making it suitable for high-end mission-critical infrastructure. GCK is often used as a robust and cost-effective Motor Control Center (MCC).

Q: Can these cabinets be shipped as a complete lineup?

A: Yes. We design and ship them as complete "suites" or shipping sections. On-site, you simply need to bolt the sections together and connect the main horizontal busbars.

Q: Do you provide on-site commissioning support?

A: We provide comprehensive installation manuals and remote video support. For large-scale projects, we can deploy engineers for on-site supervision and commissioning.

GCS low voltage withdrawable switchgear assembly(hereinafter referred to as device)is the former state Ministry of Machinery, the Ministry of Electric power joint design group according to the industry authorities, the majority of power users and design units developed in line with the national conditions, with high technical performance indicators, can adapt to the development of the power market needs and can compete with the existing introduced products. In July 1996, the device passed the appraisal jointly presided over by two departments in Shanghai, and received the attention and affirmation of the production and manufacturing units and power use departments.

The device is suitable for power plant, petroleum, chemical, metallurgy, textile, high-rise building and other industries of power distribution system. In large power plants, petrochemical systems and other places with a high degree of automation, requiring computer interface, as a three-phase AC 50(60)Hz, rated working voltage 380V, rated current 4000A and below the distribution, centralized control of the motor, reactive power compensation of the low-voltage distribution device.

The device conforms to IEC439-1 and GB7251.1 standards.

1, The ambient air temperature is not higher than +40℃, not lower than -5℃, and the average temperature within 24 hours is not higher than +35℃.

2, The relative humidity at high temperature is not more than 50%, in the lower temperature is allowed to have a high relative humidity, such as +20℃ at 90%, but should take into account the temperature change, may occasionally produce moderate condensation.

3, The altitude does not exceed 2000 meters.

4, Installation tilt shall not exceed 5°.

5, No dust, corrosive gas and rain immersion indoors.