GCS Draw-out Type Low Voltage Panel Switchgear

The GCS Draw-out type Low Voltage Panel Switchgear is an advanced enclosed switchgear assembly meticulously engineered for power reception, distribution, and intelligent motor control in three-phase AC industrial systems operating at rated voltages up to 400V (with insulation ratings reaching 1000V) and horizontal main busbar rated currents up to 4000A. As the core backbone of modern low-voltage power distribution centers, this GCS Draw-out type Low Voltage Panel Switchgear integrates a comprehensive suite of primary and secondary components—including air circuit breakers (ACBs), molded case circuit breakers (MCCBs), contactors, thermal overload relays, programmable logic controllers (PLCs), and multifunction digital meters—into standardized, fully interchangeable modular drawer units.

Product Parameter (Specification)

Below is the technical specification table for the standard GCS Draw-out type Low Voltage Panel Switchgear.

Rated Frequency 50Hz / 60Hz Applicable Standards IEC 61439-1/2, GB/T 7251 Installation Indoor, floor-standing Drawer Position Connected, Test, Disconnected and Withdrawn positions Cable Entry Top or bottom cable entry Busbar Material Copper or aluminum according to project configuration Ambient Temperature -5°C to +40°C, or project-specific conditions Altitude ≤2000m standard, higher altitude available by design confirmation.

Product Feature And Application

Q1: What are the standout functional features of this GCS Draw-out type Low Voltage Panel Switchgear?

A: The GCS Draw-out type Low Voltage Panel Switchgear is characterized by its high interchangeability and safety. Functional drawers of the same rating are completely interchangeable, eliminating wiring errors during emergency replacements. It also features a precise mechanical interlock mechanism that strictly enforces "Off-Position-Test-On" sequencing, preventing operators from connecting or disconnecting circuits under load. Additionally, the advanced ventilation design ensures effective heat dissipation for high-current circuits.

Q2: Which scenarios are best suited for this switchgear?

A: This GCS Draw-out type Low Voltage Panel Switchgear is ideally suited for sectors demanding uninterrupted power and rapid fault recovery. Typical applications include petrochemical refineries (for pump and compressor control), large-scale manufacturing plants (automated production lines), power plant auxiliary systems, urban rail transit, and commercial tower substations. Its draw-out design makes it the preferred choice for any mission-critical environment where downtime must be minimized.

Production Details

1. Cabinet Frame Fabrication – Precision-Engineered Structure

The enclosure of Lugao Power's GCS Draw-out type Low Voltage Panel Switchgear begins with high-quality cold-rolled steel sheets, selected for their superior flatness and structural integrity. All steel panels are processed through imported CNC turret punching and bending centers, achieving bending angle accuracy within ±0.5° and hole position precision within ±0.1mm. After forming, the frame undergoes a multi-stage surface treatment: degreasing, acid pickling, phosphating, and electrostatic epoxy powder coating, then baked at 180–200°C to form a hard, corrosion-resistant finish. The assembled cabinet achieves IP30 to IP40 protection, effectively shielding internal components from dust, moisture, and accidental contact.

2. Busbar System – High-Conductivity Copper Core

All main, vertical, and branch busbars are fabricated from 99.95% purity electrolytic copper (T2 grade), ensuring conductivity ≥ 98% IACS. Busbar surfaces receive a multi-layer treatment—either tin-plated, silver-plated, or covered with high-voltage-grade heat-shrink insulation sleeving—to prevent oxidation and enhance thermal dissipation. Each busbar joint is tightened with calibrated torque tools and marked for traceability, eliminating local hot spots that could compromise long-term reliability.

3. Drawer Assembly – The "Three-Pass" Tuning Procedure

Every draw-out functional unit undergoes our exclusive three-pass slide tuning:

1: Guide rails are manually fitted and adjusted for initial alignment.

2: The drawer is inserted and withdrawn under no-load conditions to verify mechanical smoothness and latch engagement.

3: Under electrical continuity testing, the drawer is cycled multiple times while monitoring primary and secondary plug-in contact resistance. Only units meeting our smooth-operation threshold are approved.

This rigorous procedure ensures each drawer glides effortlessly and maintains perfect electrical contact across its full travel range.

4. Competitive Advantages – Tighter Tolerances and Superior Contacts

Compared to standard market alternatives, Lugao Power’s manufacturing advantages are tangible and measurable:

Guide-Track Tolerance Control: We maintain the drawer mechanism gap at ±0.5mm (industry common is ≥±1.0mm). This tighter tolerance prevents the drawer from vibrating or sagging during operation, directly eliminating a major root cause of primary contact wear and overheating.

Silver-Plated Primary Connectors: All plug-in contacts are fabricated from copper alloy and finished with a silver plating layer of ≥6μm thickness. Silver’s lower contact resistance and excellent anti-oxidation properties significantly reduce power loss at connection points, enhancing the entire GCS Draw-out type Low Voltage Panel Switchgear's long-term thermal stability and energy efficiency.

Certification and Quality Assurance

Lugao manufactures GCS draw-out type low voltage switchgear according to project technical requirements and applicable low voltage switchgear standards such as IEC 61439-1/2 and GB/T 7251. Routine inspection and test reports can be provided before shipment according to the confirmed technical agreement.

• IEC 61439-1/2 based design and testing
• GB/T 7251 based manufacturing and inspection
• Power frequency withstand test
• Insulation resistance test
• Mechanical operation test for drawer units
• Interlock function inspection
• Secondary wiring and functional operation test
• Busbar connection torque inspection
• Routine test report before shipment
• Factory inspection photos available upon request



Packaging, Shipping & After-sales Service

Packaging and Shipping:

Each GCS Draw-out type Low Voltage Panel Switchgear is first wrapped with PE film to repel moisture and dust, then encased in fumigated, heavy-duty wooden crates reinforced with steel straps. We utilize vacuum-sealed packaging for sensitive electronic components and fully-encapsulated protective corners to prevent transit impact damage. Standard shipping is via 20GP/40HQ containers, with shipments insured by world-leading marine insurers to protect your investment fully.




After-sales Service:

Lugao Power Co., Ltd. provides a comprehensive 12-month warranty from the date of commissioning (or 18 months from the delivery date, whichever comes first). Our service includes 24/7 technical hotline support, remote video guidance, and on-site service from certified engineers when necessary. In the event of performance failures under normal operating conditions, we provide repair or replacement parts free of charge.




Customer Questions & Answers

Q: Is the GCS Draw-out type Low Voltage Panel Switchgear compatible with my existing busway system?

A: Yes, compatibility is strictly observed. We configure the connection riser flanges of this GCS Draw-out type Low Voltage Panel Switchgear to align perfectly with your upstream transformer and downstream busway interfaces. Please provide your on-site switchgear layout drawings during the technical confirmation stage so we can customize the connection points.




Q: What happens if a drawer fails during operation? Can I fix it without a full shutdown?

A: Precisely, rapid hot-swapping is its core advantage. You simply turn the circuit breaker within that particular compartment to "Off," withdraw the faulty unit, and slide in an identically rated spare. The rest of that GCS Draw-out type Low Voltage Panel Switchgear continues operating, restoring power within minutes.




Q: How do you prevent arc flash incidents during maintenance on the busbar chamber?

A: Safety is paramount. The main and branch busbar compartments are fully compartmentalized. We install arc-proof barriers between the draw-out unit chamber and the vertical busbar chamber. When accessing the busbar section, all adjacent functional units can be padlocked safely in the "Disconnected/Test" position.