17.5kV MV Circuit Breaker 20kA - 31.5kA 3 Phase Circuit Breaker Indoor Outdoor
Price:
$800-5000
MOQ:
1 pc
Delivery Time:
15 days
Brand:
MacweyTek
Product Description
17.5kV Vacuum Circuit Breaker 20-31.5kA Indoor Outdoor
Product Introduction
The MAC series indoor circuit breaker is our independently developed new generation 17.5kV vacuum circuit breaker. Its main features include:
- Conductance circuit installed in a three-phase insulating sleeve
- Mechanism and conductance circuit feature front and rear layout
- Newly developed mechanism design with simple construction and reliable operation
- Proven manufacturing experience with millions of units in service
- Widely adopted by high-end vacuum circuit breaker manufacturers
Technical Standards
All technical parameters comply with:
- GB1984 AC High Voltage Breaker Standards
- GB/T 11022-1999 Common Specifications for High-Voltage Switchgear and Controlgear Standards
- China Power Sector Standards DL403
- IEC62271-100, IEC56 and other major industrialized countries' standards
Testing
MAC series circuit breakers have passed rigorous testing to ensure safe operation:
Type Tests:
- Power-frequency withstand voltage tests
- Lighting impact withstand voltage tests
- Temperature rising tests
- Short-time withstand current tests
- Peak withstand current tests
- Short circuit breaking ability tests
- Mechanical life tests
Routine Tests Before Factory Shipping:
- Mechanical performance tests
- Power-frequency withstand voltage tests of main circuit
- Insulating property tests on control and auxiliary circuits
- Main circuit resistance measurement
- Interlock operating tests
- Mechanical operating tests
- Electrical equipment operating tests
Scope of Application
Widely used in:
- Power plants and electric networks
- Metallurgy and petrochemical industries
- Infrastructure projects (airports, subways, buildings)
- Distribution system protection for cables, trolley wires, transformers, generators, and capacitor banks
Safety Features
MAC circuit breakers feature:
- Complete mechanical and electrical interlock equipment
- High reliability operating performance
- Extended mechanical life
- Compatibility with matched switchgear cabinets
- Ensures safe power distribution and operator/equipment protection
Technical Specifications
| Item | Unit | Data |
|---|---|---|
| Rated voltage | KV | 17.5 |
| 1 min power frequency withstand voltage | KV | 50 |
| Lightning impulse withstand voltage | KV | 95 |
| Rated frequency | Hz | 50 |
| Rated current | A | 630, 1250, 1600 |
| Rated short-time withstand current | KA | 20, 25, 31.5 |
| Rated withstand current (peak) | KA | 50, 63, 80 |
| Rated short-circuit opening current | KA | 20, 25, 31.5 |
| Rated short-circuit closing current | KA | 50, 63, 80 |
| Rated duration of short-circuit | S | 4 |
| Rated operating sequence | O-0.3s-CO-180s-CO | |
| Mechanical life | times | 10000, 30000 |
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Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.
Company
Ningbo Macwey Industrial Technology Co.,Ltd
Location
No.218, Weier Road, Chongshou Industrial Park, Cixi City (Ningbo), China
Contact Person
Alec Sung