Medium Voltage Switches & Pole-Mounted Circuit Breakers

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ZW20-12 Outdoor vacuum circuit breaker

● The main body of the vacuum circuit breaker is a common box structure.

● Equipped with intelligent controller FTU to form a boundary intelligent type.

● Integrated high-voltage primary and secondary components: vacuum circuit breaker, isolation switch, voltage transformer current transformer, intelligent controller FTU.

● Universal installation dimensions: The installation dimensions for manual and electric operations are consistent.

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Overview

Description

The vacuum circuit breaker features a universal enclosure design, providing a robust and compact housing for its internal components. Furthermore, it integrates a functional control unit (FTU), creating a boundary intelligence system. This integration enables advanced monitoring capabilities, ensuring the circuit breaker operates efficiently and safely within the power grid.
 Inside the cabinet, high-voltage primary and secondary components are seamlessly integrated, including vacuum circuit breakers, disconnect switches, voltage transformers, current transformers, and intelligent control units (FTUs). This comprehensive integration not only simplifies the overall design but also improves the system’s reliability and performance, making it suitable for a wide range of power distribution applications.
 Vacuum circuit breakers utilize universal mounting dimensions, ensuring consistent installation sizes for both manual and electric operation. This standardized design simplifies installation and maintenance, enabling operators to quickly adapt the system to their specific needs and avoid the inconveniences caused by size differences. This innovative design reflects a relentless pursuit of efficiency, safety, and user-friendliness, making vacuum circuit breakers an ideal choice for modern power infrastructure.

Technial Parameters

Item Unit Value
Rated voltage W 12
Rated frequency Hz 50
Rated current A 630
Rated short-circuit breaking current kA 20、25
Rated peak withstand current (peak) 50、63
Rated short-time withstand current 20、25
Rated short-circuit making current (peak) 50、63
Mechanical lfe Times 10000
Rated short-cicuit breaking curent breaking times Times 30
1 min power frequency withstand voltage

Dry type (Interphase and opposite /Isolating fracture)

  

kV

 42/48
Wet type 34
Peak value of lightning impulse withstand voltage (Interphase and opposite/solating fracture) 75/85
Rated current of overcurent release A 5
Rated operating sequence   0-0.3S-CO-180S-co
Rated operating voltage V DC220、DC24
Weight kg About 185

Ordering Specifications

Item Check the corresponding options as needed
Operating mechanism □ Manual bounce operation      
□ Electric bounce operation   
□ Permanent magnet
Operating voltage □ Manual without voltage      
□ DC220V      
□ 24V
Number of current transformers □ AC phase(For manual)                     
□ ABC phase synthesis zero sequence

□ AC phase + independent zero sequence       
□ ABC phase + independent zero sequence
Changes in current

transformer protection

 □ 200、400、600/5A       
□ other
Voltage transformer □ 10000/220/100 Quantity: 1 piece   
□ 10000/220/100 Quantity: 2 pieces
Isolation switch □ None      
□ Single isolation switch
Installtion bracket □ None      
□ Manufacturer’s standard   
□ other
Inteligent controle FTU □ None (ignore the following options without FTU)  
□ With
Appearance □ Bell type   
□ B oxtype (stainles stel spray coating)
Backup power suply □ None      
□ Lead-acid battery    
□ Supercapacitor
Communication methods □ None      
□ Message      
□ 2G       
□ 3G      
□ 4G       
□ other
Backend main station □ Not connected to the backend    
□ GPRS
Control panel LCD display, key operation
Cable length □ 6.5 meters     
□ other
Products are exported to more than 100 countries and regions such as Africa, the Middle East, and the United Kingdom Europe. It is a well-known brand and manufacturer of mechanical switches in China.
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