HVD11Y – 1.14KV

Vacuum Circuit Breaker

HVD11Y-1.14 PERMANENT MAGNETIC OPERATION VACUUM CIRCUIT BREAKER is mainly used in 1140v or 660v three phases electrical distribution system. It is equipped
with permanent magnetic operation device. It is used for distribution power, circuit protection and power
equipment. It is also popular in railway, mine, electricity and so on. The product structure is vertical
design. Vacuum chamber and Permanent magnetic operation device is up-down structure. Adjustment
and maintenance are easy. It has long mechanical life. And it has high breaking ability, high reliability. It’s
in and out bus bar are at the back of the circuit breaker. It can be installed as explosion-proof feed switch

Item name parameter unit
Rated voltage 1.14 KV
Rated current 630 A
Rated frequency 50 Hz
Rated insulation level(power frequency withstand voltage 1 min) 4.2 KV
Rated short-circuit breaking current 12.5 KA
Limiting abrasion of contacts 1.5 mm
Breaking times under rated short-circuit breaking current 16 times
Electrical life 3000 times
Electric resistance of main circuit ≤100 µΩ



Item name parameter unit
Contacts clearance 3.5~4.5 mm
Contacts over travel 1.5-2 mm
Bus bar distance ≥20 mm
Distance between bus bar and housing ≥20 mm
Contacts closing bouncing time ≥2 ms
Three phases unsynchronized time ≤2 ms
Inherent closing time ≤100 ms
Inherent tripping time ≤30 ms
Contacts working pressure 350+/-50 N
Mechanical life 50000 times
Item name parameter unit
Rated voltage of control circuit AC110-AC380 V
Total power of control unit ≤200 W
Maximum operation frequency of operation device 300 Times/hour
Minimum interval time of closing operation ≥2 S