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VD4 MV Circuit Breaker 24kV 1250A 3 Pole Circuit Breakers Indoor

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VD4 MV Circuit Breaker 24kV 1250A 3 Pole Circuit Breakers Indoor

Large Image : VD4 MV Circuit Breaker 24kV 1250A 3 Pole Circuit Breakers Indoor

Product Details:

Place of Origin:	China
Brand Name:	MacweyTek
Certification:	ISO9001-2008
Model Number:	VMK-24KV

Payment & Shipping Terms:

Minimum Order Quantity:	1 pcs
Price:	$1000-$5000
Packaging Details:	wooden cases
Delivery Time:	15 days
Payment Terms:	T/T
Supply Ability:	5000

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Detailed Product Description

Name:

VD4 Vacuum Circuit Breaker

Highlight:

VD4 MV Circuit Breaker

1250A 3 Pole Circuit Breakers

3 Pole Circuit Breakers Indoor

VD4 Vacuum Circuit Breaker 24kV 1250A 3 Pole Indoor VCB

Product Introduction

The VMK series indoor circuit-breaker is our independently developed new generation 24kV vacuum circuit breaker. Its main features include:

Conductance circuit installed in a three-phase insulating sleeve
Mechanism and conductance circuit adopt front and rear layout
Newly designed mechanism 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 Standard

All technical parameters comply with:

GB1984 AC High-voltage Breaker Standards
GB/T 11022-1999 Common Specifications For High-Voltage Switchgear
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 Shipment

Mechanical performance test
Power-frequency withstand voltage tests of main circuit
Insulating property tests on control and auxiliary circuits
Measurement of main circuit resistance
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)
Control and protection of 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 protection

Technical Parameters

Item	Unit	Value
Rated voltage	KV	24
1 min power frequency withstand voltage	KV	65
Lightning impulse withstand voltage	KV	125
Rated frequency	Hz	50
Rated current	A	630, 1250, 1600, 2000, 2500
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
Opening time	ms	≤60
Closing time	ms	≤45
Mechanical life	cycles	10000