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TJ240S VITJ 7.2/630C


TJ240S VITJ 7.2/630C

The company is among the prominent Exporters and Suppliers of Vacuum Interrupter For Contactors in Muzaffarnagar (India). The Vacuum Interrupter For Contactors, offered by the company, is widely demanded owing to its unsurpassed quality and high electrical endurance. The company offers range of Vacuum Interrupter For Contactors with good mechanical, electrical and shelf life.

Electrical Ratings (3Phase) Symmetrical Basis
Rated Frequency 50/60Hz
Rated Maximum Line to Line Voltage 7.2kV,r.m.s
Rated Power Frequency Withstand Voltage : Air 32kV,r.m.s
Rated Impulse Withstand Voltage : Air 75kV,Peak
Rated Normal Current 630A
Maximum Contact Resistance at Minimum Closing Force 60 Micro 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.) 1.28kg
Moving Part Weight(Approx.) 0.49kg
Closing Force due to Bellow and Atmospheric 70±20N
Force Required to Hold Contacts open at Full Stroke100±30N
Mechanical Requirements (Ref. VC)
Contact Stroke 4.5±0.5 mm
Opening Speed(average of 75 contact gap) 0.7±0.3m/Sec
Closing Speed(average of last 30% contact gap)0.3±0.1m/Sec
Contact Bounce Duration at Closing Operation â¤3ms
Closing and Opening non-simultaneity of three-phase Contacts â¤1ms
Maximum Rebound during opening â¤2mm
Rated Contact Compressive Force 110±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

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