Zhejiang Donghua Electrical Appliance Co., Ltd.
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ZN23-40.5-1600-25 Indoor High-Voltage AC Vacuum Circuit Breaker

The ZN23-40.5 ultra-long-life vacuum circuit breaker is indoor high-voltage electrical equipment with a rated voltage of 40.5kV and three-phase alternating current of 50Hz. It is applicable to power transmission and distribution systems in industrial and mining enterprises, substations, etc., serving as control and protection switches. It is especially suitable for industries requiring frequent operations such as metallurgy and electric arc steelmaking as control and protection equipment.

This product complies with GB1984-89, Alternating Current High-Voltage Circuit Breakers.

This circuit breaker is of the truck-mounted type. It features reasonable structure, easy maintenance, safe and reliable operation. It can be equipped with CD10 Type II spring operating mechanism or CTI9 Type II spring operating mechanism.

    Operating Conditions

    • Altitude: 1000 m or below;
    • Ambient temperature: upper limit +40°C, lower limit -15°C;
    • Relative humidity: daily average ≤ 95%, monthly average ≤ 90%; Daily average of water vapour pressure ≤ 2.2 kPa;
    • Monthly average of water vapour pressure ≤ 1.8 kPa;
    • The surrounding air shall not be obviously polluted by dust, smoke, corrosive and flammable gases, vapour or salt mist;
    • No severe vibration at the site;
    • Requirements beyond the above conditions shall be agreed between the user and the manufacturer.