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Zhejiang Zhongneng Electrical Co., Ltd.

Vacuum Circuit Breaker, Circuit Breaker, Breaker manufacturer / supplier in China, offering High-Voltage Vacuum Circuit Breaker (VCB ZW8-12, ZW8-12G), Arrester Yh10W-24q, 11kv Porcelain Surge Arrester and so on.

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Supplier Homepage Product Vacuum Circuit Breaker High-Voltage Vacuum Circuit Breaker (VCB ZW8-12, ZW8-12G)

High-Voltage Vacuum Circuit Breaker (VCB ZW8-12, ZW8-12G)

FOB Price: Get Latest Price
Min. Order: 1 Piece
Production Capacity: 200PCS/Month
Transport Package: Export Standard Packing
Payment Terms: L/C, T/T, Western Union

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Basic Info
  • Model NO.: ZW8-12, ZW8-12G
  • Operation: Manual Type
  • Arc-extinguishing Medium: Vacuum
  • Structure: Moulded Case Circuit Breaker
  • Type: Circuit Breaker
  • Trademark: ZHON
  • Origin: China
  • Breaking Capacity: High Voltage Circuit Breakers
  • Speed: High-Speed Circuit Breaker
  • Installation: Fixed
  • Certification: ISO9001-2000
  • Function: Circuit-Breaker Failure Protection
  • Specification: 12KV
  • HS Code: 8535210000
Product Description
ZW8-12 series outdoor high-voltage vacuum circuit breaker is a kind of three-phase outdoor high-voltage switchgear of rated voltage 12kV and AC 50Hz.
Its population structure is three-phase together box type. Three-phase vacuum arc-extinguish chamber palaces in a metal cabinet, using the SMC insulating material to insulate inter-phase and phase to earth, which is reliable in performance and high in insulating intensity.

ZW8-12G is combined with ZW8-12 circuit breaker and isolating sword, called combination circuit breaker and used as a section switch.
High-Voltage Vacuum Circuit Breaker (VCB ZW8-12, ZW8-12G)
Item Unit Parameter
Rated Voltage kV 12
Rated Current A 630
Rated Short-circuit Breaking Current kA 6.3 12.5 20
Rated Short-circuit Making Current (Peak) kA 16 31.5 50
Rated Peak Withstand Current kA 16 31.5 50
Rated Short-time Withstand Current kA 6.3 12.5 20
Rated Insulation Level 1min Power Frequency
Withstand Voltage (Dry Test)
kV 42
Lightning Impulse Withstand Voltage (Peak) kV 75
Rated Operating Sequence   O-0.3s-C O-180s-CO
Mechanical Life times 10000
Rated Short-circuit Current Breaking Times times 30
Rated Closing Voltage of Operator V 110, 220
Rated Opening Voltage of Operator V 110, 220
Clearance Between Open Contacts mm 11± 1
Over travel of Contacts mm 3
Three-phase Opening/Closing Synchronization ms ≤ 2
Closing Bouncing Time ms ≤ 2
Average Opening Speed m/s 1.0± 0.2
Average Closing Speed m/s 0.7± 0.15
Opening Time Highest Operating Voltage s 0.015~0.05
Lowest Operating Voltage s 0.03~0.06
Closing Time s 0.025~0.05
Main Loop Resistance of Each Phase μ Ω ≤ 120
Total Thickness of Permissible Wear of Moving and Static Contacts mm 3
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Ms. Karina Zhu
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