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Indoor/Outdoor High Voltage Disconnector
Transformer Accessories

Indoor/Outdoor High Voltage Disconnector

Indoor/Outdoor High Voltage Disconnector complies with GB/T 1985 and IEC 62271-102 standards. It creates visible isolation gaps to guarantee maintenance safety, capable of switching standby power and breaking no-load circuits. Optional earthing blades discharge residual electric charge. Silver-plated contacts guarantee stable electric conduction. Anti-corrosion construction delivers long service life, widely applied in industrial plants, substations, residential communities and commercial complex power distribution rooms.

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    Scope of Application

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    1. High-voltage distribution rooms of industrial and mining enterprises

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    2. Indoor and outdoor substations & switching stations

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    3. Underground power rooms of residential communities

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    4. Underground distribution rooms of commercial complexes

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    5. Distribution systems matching box transformers

    product details
    product description

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    Technical Specifications

    Type GN19-12/GN19-12 Series GN22-12 Series GN24-12 Series
    Rated Voltage, kV 10 10 12
    Maximum operating voltage, kV 12 12 /
    Rated Current, A 400 / 630 / 1000 / 1250 / 1600 / 2000 2000 / 3150 / 4000 630 / 100 / 1250 / 2000
    Thermal stability current, kA 12.5 / 20 / 31.5 / 40 / 40 / 50 40 / 50 / 50(63) 50 / 80 / 100 / 120
    Dynamic stability current, kA 31.5 / 50 / 80 / 100 / 100 / 125 100 / 125 / 125(160) 20 / 31.5 / 40 / 50
    Type GN2-35 Series
    Rated Voltage, kV 35
    Rated Current, A 400 630 1250 1600
    Maximum through-fault current, kA 52 64 80 100
    Thermal stability current, Ka/5s 14 25 31.5 40
    Item GW4-12（DW） GW-40.5 GW4-72.5 GW4-126
    Rated Voltage（kV） 10 40.5 72.5 126
    Maximum Operating Voltage（kV） 11.5 40.5 72.5 126
    Rated Frequency（Hz） 50 or 60Hz 50 or 60Hz 50 or 60Hz 50 or 60Hz
    Rated Curent（A） 200A / 400A / 630A / 1250 630 / 1250 / 1600/2000/2500 630 / 1250 / 1600/2000/2500 630 / 1250 / 1600/2000/2500
    Rated Peak Withstand Current（kA） 8 / 20 / 31.5 / 40 62 / 80 / 100 50 / 80 / 100 50 / 80 / 100
    Rated thermal stability current, 2s, （kA） 3.15 / 8 / 12.5 / 16 20 / 31.5 / 40 20 / 31.5 / 40 20 / 31.5 / 40
    power frequency withstand voltage （1 min） According to relevant standards
    Lightning impulse peak withstand voltage According to relevant standards
    Note: With manual or electric operating mechanism (user's option)

    Execution standards

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    GB/T 1985-2023
    High-voltage alternating current disconnectors and earthing switches
    IEC 62271-102:2022
    High-voltage switchgear and controlgear — Part 102: Alternating current disconnectors and earthing switches

    Technical advantages

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    Superior safety: Visible isolation gap with mechanical interlock; earthing type eliminates residual electricity.

    Stable conductivity: Silver-plated multi-finger contacts, low resistance, strong short-time current withstand capacity.

    Low maintenance: Self-lubricating sleeves & hot-dip galvanized parts, long mechanical service life.

    Wide compatibility: Compliant with GB/T 1985 & IEC 62271-102, indoor/outdoor types for all distribution rooms.