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GYH8 3P Switch Disconnector

As the main switch in the combination of electrical terminal apparatus, GYH8 isolator is suitable for circuit of AC 50/60Hz, rated voltage 230V/400V, rated current up to 125A for isolating, it also can be used for infrequent on-and-off circuit, and is widely used in industry, mine, high-building, commerce and household and so on.

SKU GYH8-2 Category



  •  Indication function of contact position
  • Transparent cover designed to carry label.
  • Support 35mm Din – rail installation
  • Support top incoming and bottom outgoing wiring type, or bottom incoming and top outgoing wiring type.
  • Able to select electrical accessories and achieve distant indication of MCB condition: breaking, closed, and fault tripping.
  • Able to select electrical accessories and realize under-voltage and over-voltage protection of MCB and distant shunt release.


Rated current In 32A、63A、100 A、125A
Poles 1P  2P  3P  4P
Rated voltage Ue 1P: 230/400V~ ; 2/3/4P:400V~
Insulation voltage Ui 500V
Rated frequency 50/60Hz
Rated short-time withstand current lcw 12le  1s
Rated making and breaking capacity 3le, 1.05Ue, cosφ=0.65
Rated short circuit making capacity 20le, t=0.1s
Using the categories AC-22A
Rated impulse withstand voltage(1.2/50)Uimp 6000V
Dielectric test voltage at and ind.Freq.for 1min 2.5kv
Electrical life 1500
Mechanical life 8500
Protection degree IP20
Ambient temperature (with daily average ≤35℃) -5~+40℃
Storage temperature -25~+70℃
Terminal Connection type Cable/Busbar
Terminal size top/bottom for cable 50mm²  18-1/0
Tightening torque 3.5N*m   22
Connection Top and bottom

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