This series vacuum contactor is suitable for power network of AC 50Hz, the main circuit rated voltage 1140V, rated current is 1000A-1250A, for making, breaking, frequently starting and controlling AC motor, and suitable for forming magnetic starter with a variety of protectors (JDB electronic integrated protection, JR9 type over current protection devices, the RC absorption device), especially suitable for components widely used anti-explosion magnetic starter and large mineral lapping switch equipment.
The contactor complies with GB/T 14048.4,IEC 60947-4-1 and JB/T 7122 standard, the main performance indicators have reached the international level.
2.Normal using conditions
a. Environment temperature : -5ºC~+40ºC, and average value is no more than +35ºC within 24 hour.
b. Altitude: no more than 1000m.
c. Atmospheric conditions: monthly highest humidity in the most wet month is no more than 90% and monthly average minimum temperature shall be 25ºC. Condensation on the products due to temperature changes shall be considered.
d. Impact vibration: The place is without extensive shaking, impact, and vibration.
e. The place is without explosion hazard, etchant gas and sleet.
f. No rain and snow in places
g. Pollution degree: Three grade
h. Installation type: .III
i. Installation condition: Slant angle between installation surface andvertical surface is no more than 15°.