VD4 series indoor vacuum circuit breakerDetailed product description：

VD4 vacuum circuit breaker is an indoor switchgear component insulated with air.

The circuit breaker complies with the provisions of GB1984, DL/T403, German DINVDE0670, IEC60056, 60694 and other standards. Whether under normal use conditions or fault conditions (especially short-circuit situations), as long as it is within the technical parameter range, the circuit breaker can ensure safe and reliable operation. VD4 vacuum circuit breaker can perform frequent operations or multiple short circuit current disconnections within the working current range. VD4 vacuum circuit breaker is suitable for reclosing operation and has extremely high operational reliability and service life.
The VD4 vacuum circuit breaker adopts a vertical insulation sleeve to resist the influence of various climates; And in terms of maintenance and upkeep, it is usually only necessary to occasionally clean or lubricate the operating mechanism.
The installation form of VD4 vacuum circuit breaker in the switchgear can be fixed, removable, or installed on the frame for use.

Project		unit	Data
rated voltage		kV	three point six
maximum voltage		kV	3.6 7.2 12
Rated insulation level voltage	1-minute power frequency withstand voltage	kV	forty-two
	Lightning impulse withstand voltage	kV	seventy-five
rated frequency		Hz	fifty
rated current		A	630，1250，1600，2000，2500，3150
Rated symmetrical short-circuit breaking current (effective value)		A	16，20，25，31.5，40，50
4S thermal stability current (effective value)		KA	16，20，25，31.5，40，50
Rated dynamic stability impulse current (peak value)		KA	40，50，63，80，100，125