Tested against several quality parameters by our quality auditors, the Vacuum Interrupter For Circuit Breaker is known for displaying high performance. Being sourced from the trusted vendors of the industry, the Vacuum Interrupter For Circuit Breaker is assured of its fabrication using high-grade materials. We offer Vacuum Interrupter For Circuit Breaker that is known for smoothly allowing the high stress currents to be switched.

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	1250A
Rated Short- Circuit Current ( 3 Phase Symmetrical Basis)	20kA,r.m.s
Percentage D.C. Component of Rated S.C. Breaking Current	50.00%
Rated Short-Circuit Making Current	50kA,Peak
Rated Duration of Short Time Current	4s
Rated Short-Time Withstand Current	20kA,r.m.s
Rated Peak Withstand Current	50kA,r.m.s
*Maximum Contact Resistance at Minimum Closing Force	19Micro ohms
*Rated Breaking Current of Single Capacitor Bank	630A,r.m.s
*Rated Breaking Current of Back-to-Back Capacitor Bank	400A,r.m.s
Rated operating sequence	o-0.3s-co-180s-co
Mechanical Data
Interrupter Weight (Approx.)	2.57kg
Moving Part Weight (Approx.)	0.87kg
Closing Force due to Bellow and Atmospheric	80±40N
Force Required to Hold Contacts open at Full Stroke	120±50N
Mechanical Requirements (Ref. Vcb)
Contact Stroke	8±1 mm
Opening Speed (average of 75 contact gap)	1.1±0.2m/Sec
Maximum Overtravel During Opening	2mm
Maximun Rebound During Opening	2mm
Closing Speed (average of last 30% contact gap)	0.6±0.2m/Sec
Maximum Contact Bounse Duration (with maximum 2 bounces)	â‰Â¤2ms
Rated Contact Compressive Force	2000±200N
Closing and Opening non-simultaneity of three-phase Contacts	â‰Â¤2ms
Life (Estimated)
Electrical Life at Rated Normal Current	50,000 Operations
Electrical Life at Rated Short Circuit Current	100 Operations
Mechanical Life	50,000 Operations
Contact Erosion Limit	3mm
Shelf Life	20Years

Note

• Meets or exceeds the electrical endurance requirements of class E2 for autoreclosing duty per IEC 62271-200 and JB 8738-2008.
• * Rated Characteristics to be given on request.