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SF6 Gas-Insulated 24KV Load Break Switch

Nov 14, 2017

Basic Info

  • Operation: Manual Type

  • Arc-extinguishing Medium: SF6

  • Structure: Conventional Circuit Breaker

  • Function: Overcurrent Protection

  • Specification: IEC, GB

  • HS Code: 8535210000

  • Breaking Capacity: High Voltage Circuit Breakers

  • Speed: Normal Type Circuit Breaker

  • Installation: Fixed

  • Type: Circuit Breaker

  • Certification: ISO9001-2000

  • Transport Package: Carton

  • Origin: China

Product Description

Gas-insulated indoor switch disconnector

The SFG is a gas-insulated switch disconnector for medium voltage switchgear within secondary distribution networks. There are several advantages that make the SFG concept suitable for many different applications. For instance the compact size and the lightweight construction of the switch disconnector are significant features for smart integration.

There are two types of operating mechanisms: the single spring device and the double spring device. Motor operation can be added to both types of operating mechanisms.




  • Integrated voltage indicator

  • Interlocking device

  • Gas gauge, pressure indicator

  • Inspection windows

  • Non-corrosive leak-proof enclosure

  • Pressure relief channel


  • Long lifecycle

  • High mechanical endurance

  • Low maintenance costs

  • Low environmental impact


  • Each unit is stringently tested

  • Used worldwide in the Uniswitch

  • Extremely durable and reliable operating mechanism

Smart integration

  • Compact size

  • One switch - many applications

  • Easy installation

  • Compliance with IEC standards: IEC 60694; IEC 60265-1; IEC 60129; IEC 60420; IEC 60282-1; IEC 62271-102; IEC 62271-105; IEC 60265-1, Class E3; IEC 60420

    Technical data

    Rated voltagekV1224
    Rated lighting impulse withstand voltage Common valuekV75125
    Across the isolating distancekV85145
    Rated short duration power frequency withstand voltage Common valuekV2850
    Across the isolating distancekV3260
    Rated frequencyHz50/6050/60
    Rated currentA800630
    Rated short time withstand currentkA2520
    Rated duration of short circuits23
    Rated peak withstand currentkA62.550
    Making and breaking tests (IEC 60265-1, Class E3) for the SFG switch
    Mainly active load currentA800630
    Closed-loop distribution circuit currentA800630
    Cable charging currentA50 and 1050 and 10
    Line charging currentA2020
    Cable and line charging current under earth faultsA8787
    Short circuit making currentkA62.550
    Making and breaking tests (IEC 60420) for the SFG switch - fuse combination
    Withstanding and making the cut-off current of the fusekA2520
    Breaking test with long prearcing time of fuse OkOk
    Breaking capacity at rated transfer currentA1530920
    Mechanical performance
    Mechanical endurance of switch close/openOperations10001000
    Mechanical endurance of switch open/earthOperations10001000
    Ambient temperature
    Maximum valueoC4040
    Maximum value of 24 h meanoC3535
    Minimum valueoC-5-5
    Altitude above sea levelm< 1000< 1000