General
VB4/S medium-voltage indoor vacuum circuit breaker is applicable for three-phase AC power system of rated voltage up to 7.2kV~24kV and frequency 50/60HZ,to control and protect the electric equipment, especially, It is used for the occasion that needs infrequent operation at rated current or multi-breaking short circuit current, may be mounted in the indoor air insulating switchgear like type HXGN ring main uint series, etc.
This circuit breaker is made with mature APG technology. The application of VB4/S terminal buffer guarantees the indoor terminal is ever more reliable in nay operation environment. VB4/S can fully meet the requirement of GB, DL, IEC, DIN, VDE as well as standards of other advanced industrial countries.
Service condition
a) Air temperature: Maximum temperature: +40ºC; Minimum temperature:-25ºC
b) Humidity: Monthly average humidity 95%; Daily average humidity 90% .
c) Altitude above sea level: Maximum installation altitude: 2500m
d) Ambient air not apparently polluted by corrosive and flammable gas, vapor etc.
e) No frequent violent shake
Technical data
Certification
Packing & Delivery
Our company
Zhejiang Farady Powertech Co.,Ltd
TEL:0086-0577-61512688
Fax:0086-0577-61510628
Http:// faradypowertech.en.made-in-china.com
Audited Supplier 
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