GCS Low Voltage Draw-out Switchgear

The GCS series is a modular low voltage draw-out switchgear for reliable power distribution and easy maintenance. It supports 380V, 400V and 660V systems, with busbar current up to 4000A and short-time withstand current up to 80kA. Suitable for industrial plants, infrastructure and data centers.

    Product Description

    GCS low voltage withdrawable switchgear is our premium modular drawer-type power distribution product, compliant with IEC and national standards. It adopts an 8MF steel frame with three-compartment isolation, and supports up to 4000A busbar current and 80kA short-time withstand for industry-leading short-circuit resistance.

    Standardized drawer units enable single faulty loop maintenance without full section power shutdown, greatly improving efficiency. It also provides optional IP30~IP40 protection, mechanical interlock for operation safety, and integrated modules for power distribution, motor control and compensation. Optimized ventilation ensures stable long-term operation, with flexible loop customization to fit different load demands.

    Application Introduction

    It is widely applied in scenarios requiring high power supply continuity and maintenance efficiency, such as large factory production lines, rail transit, large commercial complexes, hospital operating rooms, IDC data centers, large energy storage power stations and office building core power rooms, for centralized motor control, large-capacity power distribution and uninterrupted load power supply. Our full range of high & low voltage products can fully match GCS with KYN28 high voltage switchgear, GGD fixed cabinet and various terminal distribution boxes to realize integrated high-low voltage supply. With abundant supporting cases of new energy, rail transit and large public construction projects, we provide one-stop services including power system scheme design, complete set manufacturing, factory type test, on-site commissioning and long-term operation maintenance. Full industrial chain supporting avoids multi-party procurement, greatly shortening project delivery cycle and reducing customers’ comprehensive purchasing and management costs.

    Technical Parameters

    CategoryParameterValue
    Electrical DataRated Working VoltageAC 380V / 400V / 660V
    Rated Insulation Voltage660V – 1000V
    Rated Frequency50Hz / 60Hz
    Max. Rated Horizontal Busbar CurrentUp to 4000A
    Max. Rated Vertical Busbar CurrentUp to 1000A
    Rated Short-circuit Breaking CurrentUp to 50kA / 80kA
    Rated Short-time Withstand Current (1s)Up to 50kA / 80kA
    Rated Peak Withstand CurrentUp to 105kA / 176kA
    Rated Impulse Withstand Voltage12kV
    Power Frequency Withstand Voltage (1min)2500V (Main Circuit), 1760V (Auxiliary Circuit)
    General DataProtection DegreeIP30 / IP40 (Standard); IP54 Optional
    Earthing SystemTT, IT, TN-S, TN-CS (3-phase 4-wire / 3-phase 5-wire)
    Applicable StandardsIEC 60439-1, GB 7251, JB/T 9661
    Drawer Unit TypeStandard 1/2 Unit, 1 Unit, 2 Unit, 3 Unit Withdrawable Modules
    Environmental ConditionsAmbient Temperature-5℃ ~ +40℃ (24h Average ≤ +35℃)
    Altitude≤ 2000m Above Sea Level
    Relative Humidity≤ 50% at +40℃; Higher Humidity Allowed at Lower Temperatures (e.g., 90% at +20℃)
    InstallationIndoor, Vertical Installation (Inclination ≤ 5°)
    Cabinet & ConstructionFrame Material8MF Open-type Cold-formed Steel, Fully Assembled / Partially Welded Structure
    Compartment DesignStrictly Separated Functional Compartments: Unit Chamber, Busbar Chamber, Cable Chamber
    Cooling DesignVentilation Slots at Top and Bottom for Natural Convection Heat Dissipation
    Cable EntryTop / Bottom / Rear Cable Entry Available
    Surface TreatmentHigh-voltage Electrostatic Epoxy Powder Coating
    Standard Cabinet ColorRAL 7035
    Standard Cabinet DimensionsHeight: 2200mm; Width: 400/600/800/1000/1200mm; Depth: 800/1000mm
    Series Selection GuideGCS1 SeriesRated Current: 400/630/1000A; Short-time Withstand Current: 15kA
    GCS2 SeriesRated Current: 1000/1600A; Short-time Withstand Current: 30kA
    GCS3 SeriesRated Current: 2000/2500/3150/4000A; Short-time Withstand Current: 50kA/80kA

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