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VB4P Medium-Voltage Indoor Vacuum Circuit Breaker01.jpg

VB4P Medium-Voltage Indoor Vacuum Circuit Breaker02.jpg

China VD4 Medium-Voltage Indoor Vacuum Circuit Breaker Suppliers and Factory - Rated 2.5 to 34.5kV, IEC 60694

Introducing the VD4 Model Series, a cutting-edge solution for your electrical needs. With a rated voltage range of 2.5 to 34.5kV, this product is designed to meet the highest standards set by IEC 60694, ensuring reliability and safety in both outdoor and indoor applications, Manufactured in China, our VD4 series is supported by a two-year warranty, affirming our commitment to quality and customer satisfaction. As a leading supplier and factory in the electrical industry, we take pride in delivering exceptional products that cater to your operational requirements. Choose the VD4 series for a dependable, high-performance solution that meets your voltage requirements with ease

Product Details

This circuit breaker is made with mature APG technology. The application of VB4P terminal buffer guarantees the indoor terminal is ever more reliable in any operation environment. VB4P can fully meet the requirement of GB, DL, IEC, DIN, VDE as well as standards of other advanced industrial countries.

General

VB4P medium-voltage indoor vacuum circuit breaker is applicable for three-phase AC power system of rated voltage up to 12~24kV and frequency 50/60Hz, widely used in many fields such as power plant, transformer substation, petrol chemical industry, metallurgy, manufacturing industry, airport, residential area, etc., to control and protect the electric equipment, especially, It is used for the occasion that needs infrequent operation at rated current or multi-breaking short circuit current, may be mounted in the indoor air insulating switchgear like type KYN28 or AMS, ABB type ZS1 series, etc. This circuit breaker is standards as GB1984-2003 AC high voltage circuit breaker, JB3855 3.6-40.5Kv indoor AC High voltage circuit breaker, DL/T403 Specification of 12-40.5Kv indoor High voltage vacuum circuit breaker for order as well as IEC60694.

Service Environment

Air temperature: Maximum temperature: +40℃; Minimum temperature: -25℃.

Humidity: Monthly average humidity 95%; Daily average humidity 90%.

Altitude: Maximum installation altitude above sea level: 2500m.

Ambient Air: Not apparently polluted by corrosive and flammable gas, vapor etc.

Stability: No frequent violent shake.

3D Mechanism Introduction

VB4P Medium-Voltage Indoor Vacuum Circuit Breaker 3D Mechanism

Innovative Product Design

Damper with perfect performance: Thanks to the refined damper with perfect performance and the new cam gear with curvilinear design, the contacts rebounding value during the breaker opening is reduced more and the breaker can be opened reliably. Besides, the bellows in vacuum interrupter are avoided to be broken down due to contacts over bounding and also the mechanical lifetime of operating mechanism is ensured.

Special design of repair: During the design for VB4P circuit-breaker, the installation and repair must be taken into account. So for the disassembly of parts or accessories, users need no special tools and the repair becomes more convenient. Besides, all of the secondary controlling components are in front of the operating mechanism.

Modularized operating mechanism: Divided into closing module, opening module, mainaxis module and secondary wiring module, which make the mechanism have characteristic of standard manufacture method, short producing period, convenient maintenance and rapid replacing.

Self-lubricative bearing: Applicable to over-load and low-speed conditions and avoids the lost-lubricative phenomena due to oil-lubricative bearing out of work for a long time.

Conductors with silvered surface: All conductors are disposed by silvered process to reduce contacting resistance and improve electricity-conducting capacity.

Single closing spring device

Self-lubricative Bearing without Oil

Conductors with Silvered Surface

Embedded Pole Design

High Reliability

Free Maintenance

Stable Insulating Property

Firm Structure

Miniaturization

Environmental Protection

Vacuum Interrupter with Excellent Performance

1. Unique R-shaped Contact Terminal Design

2. Complete One-Time Sea-Exhaust Technology

3. High & Stable Quality Ceramic Metallization Technology

4. Stainless Steel Direct Rivet Weld Technology

Installation Size

Frequently Asked Questions

Q1: What is the rated voltage range for the VB4P circuit breaker? The VB4P is designed for three-phase AC power systems with a rated voltage up to 12~24kV and a frequency of 50/60Hz.

Q2: What international standards does this vacuum circuit breaker comply with? It meets GB1984, JB3855, DL/T403, and IEC60694 standards, as well as VDE and DIN requirements.

Q3: Can the VB4P be used in harsh environments? Yes, it operates reliably between -25°C and +40°C, and handles up to 95% humidity at altitudes up to 2500m.

Q4: What are the benefits of the silvered surface on the conductors? The silvered process reduces contact resistance, improves electricity-conducting capacity, and extends the breaker's mechanical lifetime by reducing heat.

Q5: Is the operating mechanism easy to maintain? Yes, it features a modularized design and self-lubricative bearings, allowing for tool-free disassembly of many parts and free maintenance under specific conditions.

Q6: Which switchgear types are compatible with VB4P? It is suitable for indoor air insulating switchgear such as KYN28, AMS, and ABB type ZS1 series.