We are one of the major Exporters and Suppliers of Vacuum Interrupter For Contactors in Muzaffarnagar (India). The wide range of quality Vacuum Interrupter For Contactors, offered by us, are known for their high electrical endurance and great shelf life. These Vacuum Interrupters For Contactors are also appreciated for their long mechanical and electrical life.

Electrical Ratings (3Phase) Symmetrical Basis
Rated Frequency	50/60Hz
Rated Maximum Line to Line Voltage	12kV,r.m.s
Rated Power Frequency Withstand Voltage : Air	42kV,r.m.s
Rated Impulse Withstand Voltage : Air	95kV,Peak
Rated Normal Current	630A
Maximum Contact Resistance at Minimum Closing Force	50Micro ohms
Limit Breaking Current	6.3kA
Rated Short-Time Withstand Current	6.3kA
Rated Making Current	6.3kA
Rated Breaking Current(Max/Min)	5kA/0.125kA
Rated Duration of Short Time Current	4s
Mechanical Data
Interrupter Weight(Approx.)	1.41kg
Moving Part Weight(Approx.)	0.49kg
Closing Force due to Bellow and Atmospheric	70±20N
Force Required to Hold Contacts open at Full Stroke	100±30N
Mechanical Requirements (Ref. VC)
Contact Stroke	6±1 mm
Opening Speed(average of 75 contact gap)	0.7±0.3m/Sec
Closing Speed(average of last 30% contact gap)	0.4±0.2m/Sec
Contact Bounce Duration at Closing Operation	â‰Â¤3ms
Closing and Opening non-simultaneity of three-phase Contacts	â‰Â¤1ms
Maximum Rebound during opening	â‰Â¤2mm
Rated Contact Compressive Force	120±10N
Life (Estimated)
Electrical Endurance AC-3	250,000 Operations
Electrical Endurance AC-4	100,000 Operations
Mechanical Life	300,000 Operations
Contact Erosion Limit	3mm
Shelf Life	20Years