ZN63(VS1)-12 Side Mounted Indoor Vacuum Circuit Breaker | MINRONG Electric OEM Supplier

2026-04-17 14:45:15

Introduction

With the rapid development of modern power distribution systems, compact structure, high reliability, and maintenance free performance have become essential requirements for medium voltage switchgear.

The MINRONG Electric ZN63(VS1)-12 side mounted Indoor vacuum circuit breaker is designed to meet these demands. Featuring a lateral operating mechanism and solid insulated pole technology, it is widely used in ring main units, compact substations, and industrial distribution systems.

It is an ideal choice for customers seeking space saving, high performance, and OEM customized 12kV Vacuum Circuit Breakers.

What is ZN63(VS1)-12 side mounted vacuum circuit breaker

The ZN63(VS1)-12 is a 12kV indoor High voltage vacuum circuit breaker. Its side mounted structure places the operating mechanism beside the vacuum interrupter, which significantly reduces the overall panel size.

Compared with traditional front mounted designs, this configuration allows more compact switchgear layouts and higher space utilization.

The breaker adopts APG solid insulation technology. The vacuum interrupter and conductive parts are fully encapsulated in epoxy resin, providing excellent insulation performance and environmental resistance.

Key Features

Compact Side Mounted Design

The breaker width is typically less than 500mm, making it suitable for compact switchgear, RMU systems, and urban substations where space is limited.

Solid Insulated Pole Structure

Epoxy resin encapsulation improves dielectric strength and protects internal components from dust, humidity, and condensation.

High Reliability and Long Service Life

Mechanical life reaches up to 20000 to 30000 operations. Electrical life supports up to 50 full capacity interruptions, suitable for frequent switching conditions.

Strong Breaking Performance

Rated short circuit breaking current ranges from 20kA to 31.5kA, ensuring stable operation in industrial and utility power systems.

Maintenance Free Operation

The fully sealed vacuum interrupter requires minimal maintenance. No oil or SF6 gas is used, reducing lifecycle costs.

Technical Advantages

The ZN63(VS1)-12 vacuum circuit breaker combines advanced vacuum arc extinguishing technology with optimized insulation design.

It provides high dielectric strength, stable thermal performance, and reliable interruption capability under various operating conditions.

The product complies with IEC 62271-100 and GB standards for high voltage switchgear.

Technical Parameters

Applications

The ZN63(VS1)-12 is widely used in various industries.

Urban distribution systems including switching stations and distribution rooms
Ring main units and compact substations
Industrial manufacturing plants and mining facilities
Renewable energy projects such as solar and wind power substations
Infrastructure including metro systems, hospitals, and data centers

OEM and ODM Customization Service

MINRONG Electric provides flexible manufacturing solutions for global customers.

Sample based customization allows replication or optimization based on drawings or physical samples.

OEM service includes brand customization, technical specification matching, and packaging design.

ODM service covers full product development including structure design, mechanism optimization, and complete assembly solutions.

We support both small batch trial orders and large volume production.

Why Choose MINRONG Electric

Professional manufacturer with focus on medium and high voltage equipment

Products fully tested according to IEC and GB standards

Stable production capacity with fast delivery time

Engineering support for switchgear integration

Rich export experience in global markets

FAQ

Q1: What is ZN63 VS1 12 vacuum circuit breaker？
It is a 12kV indoor vacuum circuit breaker used for protection and control in medium voltage power systems

Q2: What is a side mounted vacuum circuit breaker？
It refers to a design where the operating mechanism is positioned beside the interrupter to reduce equipment size

Q3: Do you support OEM and ODM？
Yes, we provide full OEM and ODM services for international customers

Q4: What standards does this breaker meet？
It complies with IEC 62271-100 and relevant GB standards

Contact Us

If you are looking for a reliable ZN63(VS1)-12 side mounted vacuum circuit breaker manufacturer, MINRONG Electric can provide professional support.

Send us your drawings or requirements and get a customized solution, technical support, and quotation within 24 hours.