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Vacuum Interrupters for AC Contactors:TJ-7.2/630B
Rated  Current (A) 630
Rated Voltage (KV) 7.2
Rated Short-Current 6.3/100
Rated Breaking Capacity 5/25
Limited Breaking Capacity 6.3/3
Rated Short-time(1min) Power-Frequency Withshand Voltage 28
Contact Force From Atmosphere 70±15
Circuit Resistance At Contact Force From Atmosphere ≤120
Contact Stroke(mm) 4.5
Overtrave(mm) 1
Average Opening Speed 0.5~0.7
Average closing speed 0.1~0.3
Rated Added External Contactfinal Force 350
TJ-7.2/630B