Application
The GNQ2 series automatic switching device functions offering a normal power supply by checking the power supply conditions such as over-voltage, under-voltage and phase failure and changing over the power supply of one or several load circuits to another at the three-phase four-wire dual service network, It is widely used at different occasions such as indstrial, commercial and tall structure.
The body comprises two circuit breakers featuring electric-driven operating mechanism and accessories (auxiliry contact, alarm contact), mechanical interlocking mechanism, fuse and connecting terminal, etc. Mechanical interlocking device is mounted between the two circuit breakers. The voltage of contorl power supply is AC. 230V, The mechanical durability of GNQ2-63-225, GNQ2-400 and GNQ2-630-800 are respectively 5000 times, 3000times and 2500times.
Normal working condition
Ambient Temperature: -5'C----+40'C, The average of 24H is less than +35'C
Altitude: ??2000m

The relative humidity shall not exceed 50% when the environment temperature is +40'C, The relative humidity may be higher at the lower temperature condition, The maxmum month-average relative humidity is 90% in the most humid month with a minimum month-average temperature +2'C, The factor that dew may occur on the product due to tempeture change shall be taken into consideration.
Pullution grade: GradeIII
Installation place without strong Oscillation and dashout, no gas corrupt metal and disrupt insulation, no serious dust, no conductive particles and explosive dangeous material, no disruption of strong magnatic field.
Conform standard
IEC 60947-1
IEC 60947-6-1(1989)
GB14048-11
IEC 60947-2 GB14048.2