Outdoor VCB Breaker for 11kV-33kV Power Lines | High Voltage Vacuum Circuit Breaker Supplier
Reliable outdoor vacuum circuit breaker (VCB) for 11kV, 24kV, and 33kV power distribution. Ideal for pole-mounted or substation use. Low maintenance and high performance.
The ZW32 series of Outdoor High Voltage Vacuum Circuit Breakers represents the company’s integration of advanced domestic and international technologies. Utilizing a new intelligent design concept and cutting-edge technology, this latest generation of vacuum circuit breakers from China is designed for outdoor use. The product can be applied as the main transformer switch on the 35kV substation’s 10kV side, as well as a 10kV outlet switch. It is also suitable for use as a pole-mounted switch in distribution networks. The series combines multiple control units to easily achieve functions such as control, protection, measurement, and communication, making it an ideal solution for automation and compact installations.
Outdoor High Voltage Vacuum Circuit Breaker
Working environment temperature: maximum 40 ℃; daily average not exceeding 35 ℃; minimum ambient temperature down to -25 ℃.
Air relative humidity: daily average not more than 95%, monthly average not more than 90%; daily average water vapor pressure not exceeding 2.2 kPa.
Monthly average water vapor pressure not more than 1.8 kPa.
Altitude: no more than 2000 meters above sea level.
Surroundings free from significant contamination by dust, smoke, corrosive or flammable gases, steam, or salt fog.
Negligible vibration or ground movement from outside the switchgear and control equipment.
Induced electromagnetic interference amplitude in the secondary system does not exceed 1.6 kV.
Main technical parameters
| Serial number | Name | Unit | Data | |
| 1 | Rated voltage | KV | 36 | |
| 2 | Rated insulation level | 1min power frequency withstand voltage (RMS) | KV | 70 |
| Lightning impulse withstand voltage (peak) | KV | 170 | ||
| 3 | Rated frequency | KV | 50 | |
| 4 | Rated current | A | 630 1250 | |
| 5 | Rated short circuit breaking current | KA | 20 | |
| 6 | Rated short-circuit closing current (peak) | KA | 50 | |
| 7 | Rated operating sequence | Points t1 (0.3s) – points t2 (3s) – points t2 (3s) – joint points – lock | ||
| 8 | Thermal stability current (4S) | KA | 25 | |
| 9 | Dynamic current (peak) | KA | 31.5 | |
| 10 | Rated short circuit current breaking times | Times | 30 | |
| 11 | CT ratio | 600/5 400/5 200/5 | ||
| 12 | Working power supply voltage | V | 220(110) | |
| 13 | Creepage distance | ≥ 31 | ||
| 14 | Number of machines | Times | 10000 | |
| 15 | weight | kg | 90+40 | |
The Outdoor High Voltage Vacuum Circuit Breaker supports various protection modes including:
Instantaneous and time-delayed overcurrent
Reverse time overcurrent
Directional overcurrent
Overvoltage and undervoltage protection
Supports both local (on-site) and remote operation
Can operate based on pre-set automatic programs
Automatic fault location and line isolation
Power restoration and parameter analysis
Supports automatic low-frequency load shedding and capacitor switching
Fault information reporting via GPRS or dedicated communication networks
Supports TCP/IP protocol and GPRS communication
Equipped with CAN and RS232/485 communication ports
Compatible with multiple communication protocols including DNP3.0 and IEC101
Records and stores operational data, fault parameters, and protection settings
Supports both on-site and remote programming of protection parameters
Monitors mechanical device parameters and arc chamber conditions
Enables synchronized operation of the Outdoor High Voltage Vacuum Circuit Breaker to suppress over-voltage and inrush currents
Particularly effective for capacitor switching operations
Further information or a personal consultation? Our products and know-how are there to provide solutions.
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