GCS Low Voltage Draw-out Switchgear

The GCS series is an economical modular draw-out switchgear widely used in general industrial distribution. It offers reliable performance with easy maintenance and flexible configuration options. Rated for 400V systems with modular draw-out units for easy servicing.

    Product Description

    GCS low voltage withdrawable switchgear is a modular drawer-type power distribution equipment and our core high-end low-voltage product, complying with both IEC and national standards. It adopts 8MF steel assembled frame with a safe three-compartment isolated structure. The maximum rated current of main busbar reaches 4000A, and the short-time withstand current can hit 80kA, leading the industry in short-circuit resistance. Functional units adopt standardized drawers (1/2 unit & standard unit). Single faulty loop can be pulled out for maintenance without cutting off power of the whole section, greatly improving maintenance efficiency. Optional IP30~IP40 protection grade, and drawers are equipped with mechanical interlock to prevent misoperation and live plugging risks. It supports integrated modules of power distribution, motor variable frequency control, capacitor compensation and metering protection. Optimized cabinet ventilation duct ensures stable temperature rise under long-term full load, and loops can be flexibly added or removed according to load demand with strong customizability.

    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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