Zw8-12fg 12kv 630-1250A Outdoor Intelligent Power Protection Switch Vacuum Circuit Breaker Auto Reclose

• Breaking Capacity: High Voltage Circuit Breakers
• Operation: Electric Type
• Speed: Normal Type Circuit Breaker
• Arc-extinguishing Medium: Vacuum
• Installation: Fixed
• Structure: Vcb
• Model NO.: ZW8-12FG
• Poles Number: 3
• Type: Circuit Breaker
• Function: Conventional Circuit Breaker, Circuit-Breaker Failure Protection, Overcurrent Protection, OVP(Overvoltage Protection), RCCB
• Certification: ISO9001-2000, CE, CCC
• Rated Frequency: 50/60Hz
• Rated Voltage: 12kv
• Rated Currrent: 630A
• Rated Short Circuit Breaking Current: 6.3-20ka
• Rated Operation Sequence: O-0.3s-Co-180s-Co
• Mechanical Life: 10000 Times
• Rated Peak Withstand Current: 16/31.5/50ka
• Rated Short Time Withstand Current: 6.3/12.5/20ka
• Rated Insulation Leve: 42-75kv
• Rated Current Breaking Time: 10000 Times
• Opening Time: 0.015-0.15s/0.03-0.06s
• Closing Time: 0.025-0.05s
• Transport Package: Wooden Box Shipping
• Specification: 853*590*827mm
• Trademark: CNKC
• Origin: China
• Production Capacity: 2000PCS/Monthly

Product Description

Product Description
Zw8-12 (FG) type outdoor high voltage vacuum circuit breaker, three-phase AC 50Hz outdoor high voltage switchgear. It is composed of operating circuit, conductive circuit, insulation system, sealing parts and shell. The overall structure is three-phase total box type. Used in 10kV rural power network and urban power system, as load current, overload current, short circuit current and other similar places.
Executive standard: GB1984-2003 "high voltage AC circuit breaker"; GB/T11022-1999 "High voltage switchgear and control equipment standard common technical requirements"; 1IEC62271-100 HIGH voltage AC circuit Breaker

Model Description




Product technical parameters and external dimensions




Product structure features 

1.It is equipped with CT23 type spring energy-stored operating mechanism. Energy-stored, opening and closing can be achieved by motor or by manual.
2. ZW8-12 (FG) consists of ZW8-12 breaker and isolator, called combined breaker, can be used as sectionalizer.
3.The structure of breaker is of three-phase assembled in a tank, three-phase vacuum arc-extinguishing chamber enclosed in metal tank, insulation material between phases and phase to each made of SMC.
4. Reliable performances, and high insulating strength.



Environment condition

1. Ambient air temperature: -5~+40 and the average temperature should not exceed +35 in 24h.
2. Install and use indoors. Altitude above sea level for operation site should not exceed 2000M.
3. Relative humidity should not exceed 50% at max temperature +40. Higher relative humidity is allowed at lower temperature. Ex. 90% at +20. But in view of the temperature change, it is possible that moderate dews will produce casually.
4. Installation gradient not exceed 5.
5. Install in the places without fierce vibration and shock and the sites insufficient to erode the electrical components.
6. Any specific requirement, consult with manufactory.

Product details


Products real shot


A corner of the production workshop


Product packaging



Product application case