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Hubei Dayu Hanguang Vacuum Electric Co.,Ltd.
CN EN

Vacuum interrupter for contactor TJ240A

Vacuum interrupter for contactor TJ240A

Model：VITJ7.2/630-6.3

Category：VI for contactors


Product details

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Main Technical Specification
VOLTAGE RATINGS
Rated voltage(Ur)kV7.2
Rated short-time(1min)power-frequency withstand voltage(Ud)kV32
Rated lightning impulse withstand voltage(Peak)(Up)kV60
Rated frequency(fr)Hz50
CURRENT RATINGS
Rated current(Ir)A630
Circuit resistance at lowest rated contact forceμΩ≤60
Rated short-time withstand current(lk)kA6.3
Rated duration of short-circuit(tk)s4
Rated peak withstand current(lp)kA6.3
Rated making currentkA6.3
Limit breaking currentA6.3
MECHANICAL DATA
Weight of movable partskg≤0.6
Closing force due to bellow and atmosphereN70±30
Force required to hold contacts open at full strokeN100±40
MECHANICAL REQUIREMENTS
Clearance between open contactsmm5±1
Average opening speed (average of first 75% contact gap)m/s0.4-0.5
Average closing speed (average of last 30% contact gap)m/s0.15-0.25
Rated added external contact final forceN250±50
Contact bouncing duration at closing operationms≤2
Closing and opening non-simultaneity of three-phase contactsms≤2
Maximum rebound during openingmm≤1
LIFE
Storage lifeyears20
Rated mechanical enduranceTimes300000
Contacts limit erosionmm3

Relevant information