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17.5kV MV Circuit Breaker 20kA - 31.5kA 3 Phase Circuit Breaker Indoor Outdoor

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17.5kV MV Circuit Breaker 20kA - 31.5kA 3 Phase Circuit Breaker Indoor Outdoor

Large Image : 17.5kV MV Circuit Breaker 20kA - 31.5kA 3 Phase Circuit Breaker Indoor Outdoor

Product Details:

Place of Origin:	China
Brand Name:	MacweyTek
Certification:	With Type Test Report
Model Number:	VMK-17.5

Payment & Shipping Terms:

Minimum Order Quantity:	1 pc
Price:	$800-5000
Packaging Details:	wooden case
Delivery Time:	15 days
Payment Terms:	T/T
Supply Ability:	5000 pcs

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Detailed Product Description

Name:	MV Circuit Breaker	Rated Voltage:	17.5KV
Rated Frequency:	50Hz	Rated Current:	630, 1250, 1600A
Rated Short-time Withstand Current:	20, 25, 31.5KA	Rated Withstand Current:	50, 63, 80KA
Highlight:	17.5kV MV Circuit Breaker , 20kA 3 Phase Circuit Breaker , 31.5kA 3 Phase Circuit Breaker

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