NDG2-200/4 Switch Disconnector is applicable to the low-voltage distribution or motor network under AC 50Hz, rated working voltage of AC400V and AC690V and rated working current of 200A for disconnection of infrequent connection and breaking circuits and lines.

The product is widely applied in the power transmission and distribution and automation system of building, electric power and chemical industries.

Electrical Specification:

  • Rated Isolation Voltage Ui: 1000V
  • Rated Operating Voltage Ue: AC400V, AC690V
  • Rated Impulse Voltage Uimp: 12kV
  • Rated Operating Current Ie (A)/Power AC

400V AC-23B A/kW    200/110

690V AC-23B A/kW    160/150

690V AC-22B A/kW       200

  • Rated Making Capacity: 690V AC-23B 1600A
  • Rated Breaking Capacity: 690V AC-23B 1280A
  • Rated short-circuit making capacity: 20kA @690V
  • Rated short-time withstand current: 4kA/1s @690V
  • Allowable Load:

200A under the ambient temperature of 40℃

180A under the ambient temperature of 45℃

160A under the ambient temperature of 50℃

140A under the ambient temperature of 55℃

  • Auxiliary Switch: 380V AC-15  4A

               220V DC-13  0.4A

  • Electrical Life: 1000 times
  • Mechanical Life: 12000 times
  • Operating Torque: 7.5Nm

Working Environment:

  • Altitude: ≤2000m
  • Ambient Temperature: -25~+55℃, and average temp. no more than +35℃ in 24H. Drop capacity should be considered when environment temperature is higher than 40 ℃
  • Pollution Degree: 3
  • Under normal use, the limit humidity should not exceed 90% and last more than 24 hours, and measures to prevent condensation should be taken. Environmental humidity is correlated with temperature. When the ambient temperature is high, the relative humidity is required to be lower. If the temperature exceeds +40℃, the relative humidity is not more than 50%.
  • Installation Category: III & IV
  • Product should be installed in a place without significant shake, shock vibration, snow hit, and there is no explosion hazard installation location should be medium, and medium without enough to corrosive action on metals, and damage the insulation gas and dust. 


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