WENZHOU ZHEGUANG ELECTRONIC CO., LTD. >> Vacuum Circuit Breaker Zn28 Vs1 Td630/12-31.5

Vacuum Circuit Breaker Zn28 Vs1 Td630/12-31.5

Vacuum Circuit Breaker Zn28 Vs1 Td630/12-31.5
Price: US $ 100-105/Piece
Min Order: 1/Piece
Pay Type: L/C,T/T,D/P,Western Union
Prod Model: 302C
Warranty: 12 Month
Rated Voltatge: 12kv
Rated Current: 630/1250A
Rated Short-Circuit Breaking Current: 31.5ka
Mechanical Life: 20000 Times
Shelf Life: 20 Years
Breaking Capacity: High Voltage Circuit Breakers
Operation: Energy-storage Type
Speed: High-Speed Circuit Breaker
Arc-extinguishing Medium: Vacuum
Installation: Fixed
Poles Number: 3
Certification: CQC
Structure: Vacuum
Type: Vacuum
Function: Vacuum

Product Description

ZN28 VS1 Vacuum Interrupter For Indoor Circuit Breaker 302C





Main Technical Data
Main Technical Data
Rated Voltage 12kV
Rated Current 630/1250A
Rated Frequency50Hz
Rated Short-time power frequency withstand voltage(1min)42kV
Rated Lighting impulse withstand voltage75kv
Rated short-circuit breaking current 31.5KA
Rated short-circuit making current(peak)80kA
Breaking operations of rated short circuit breaking current30 timies
Rated sigle capacitor bank breaking current 630A
Rated short-time withstand current31.5kA
Rated peak withstand current80kA
Rated duration of short-circuit4s
Mechanica life20000times
Contact closing force due to bellows and atmosphere120±50N
Counterforce at rated contact stroke190±60N
Circuit resistance at rated contact force ≤25μΩ
Shelf life 20 years
Contact erosion limit3mm
Weight of moving parts≤1.5kg
Mechanical Data Required for matched vacuum switchgear
Rated contact stroke10±1mm
Average opening speed 1.0±0.2m/s
Average closing speed 0.65±0.15m/s
Added contact force 3150±200N
Contact bouncing duration at closing operation≤2ms
Contact bouncing bank amplitude of opening operation≤2mm
Three-pole simultaneity≤1ms


Dimensional Drawing








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