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TJ340R VITJ 12/450R


TJ340R VITJ 12/450R


The company stands tall among the major Exporters and Suppliers of Vacuum Interrupter For Contactors in Muzaffarnagar (India). The range of Vacuum Interrupter For Contactors is widely appreciated as well as demanded owing to its superior quality, high electrical endurance and longer mechanical, electrical and shelf 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 450A
Maximum Contact Resistance at Minimum Closing Force 50Micro ohms
Limit Breaking Current 4.5kA
Rated Short-Time Withstand Current 4.5kA
Rated Making Current 4.5kA
Rated Breaking Current(Max/Min) 4.5kA/0.125kA
Rated Duration of Short Time Current 4s
Mechanical Data
Interrupter Weight(Approx.) 1.47kg
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 6±1 mm
Opening Speed(average of 75 contact gap) 0.7±0.2m/Sec
Closing Speed(average of last 30% contact gap)0.4±0.2m/Sec
Contact Bounce Duration at Closing Operation â¤3ms
Closing and Opening non-simultaneity of three-phase Contacts â¤1ms
Maximum Rebound during openingâ¤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

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