ZN85 Outdoor Vacuum Circuit Breaker 12kV 630A for Pole-Mounted Switchgear

Model meaning

Zn85 refers to the type, 35kV/40kV is the breaking capacity, vacuum circuit breaker is the key term (VCB is an abbreviation), it is specifically designed for outdoor use and can be used for decoration.

The ZN85 high-voltage circuit breaker is an indoor-installed medium-voltage circuit breaker using vacuum arc-extinguishing technology. It is mainly used in three-phase AC 50Hz power systems with rated voltages of 12kV ~ 40.5kV (especially 24kV and 40.5kV).

Compared to the previously introduced ZN63 (VS1, commonly used in 12kV systems), ZN85 is typically used for higher voltage levels and is a key piece of equipment in medium-sized substations and large industrial and mining enterprise power distribution systems.

General product information

Place of Origin:	5th Floor, No. 3, Jinghong West Road, Liushi Town, Yueqing City, Wenzhou City, Zhejiang Province
Brand Name:	MINGTUO
Model Number:	VCB(ZN85)
Certification:	IOS  CE  ROHS

Product Commercial Terms

Minimum Order Quantity:	1
Price:	2100$
Packaging Details:	Wooden box packaging
Delivery Time:	Within fifteen days
Payment Terms:	100% prepaid, 70%/30%, 80%/20%
Supply Ability:	Available at any time

Description：

ZN85 Outdoor Vacuum Circuit Breaker - Reliable Power Distribution Solution**

Product Overview

The ZN85 outdoor vacuum circuit breaker is a cutting-edge switching device designed for reliable operation in medium-voltage distribution networks. Engineered with advanced vacuum interruption technology and robust environmental protection, it ensures superior performance in diverse climatic conditions.

Key Specifications

- Rated Voltage: 12kV

- Rated Current: 400A-1250A

- Breaking Capacity: 16kA-25kA

- Mechanical Life: 10,000 operations

- Installation: Pole-mounted or ground-mounted

- Operating Temperature: -30°C to +40°C

Technical Features

- Sealed vacuum interrupter for maintenance-free operation

- Spring-operated mechanism with manual/remote control options

- IP54 protection rating for outdoor applications

- Compact design with corrosion-resistant housing

- Integrated current transformers and protective relays

Main Applications

- 35kV and below substation outlets

- Distribution line control and protection

- Industrial plant power supply systems

- Renewable energy grid connections

- Mining and rural electrification projects

Quality Assurance

Manufactured in compliance with GB/T 11022 and IEC 62271 standards, each unit undergoes rigorous testing including power frequency withstand voltage, mechanical operation, and temperature rise tests. Our breakers deliver maintenance-free operation for 20 years with 99.9% reliability rate.

Service Support

- Custom configuration available

- Technical documentation in multiple languages

- Global shipping with 18-month warranty

- 24/7 remote technical support

 

 

Quick Detail:

ZN85 Vacuum Circuit Breaker

 

ZN85-12 Outdoor VCB

 

Type ZN85 Vacuum Interrupter

 

 

Outdoor HV Vacuum Circuit Breaker

 

Pole-Mounted Vacuum Breaker

 

12kV Automatic Circuit Recloser

 

 

Distribution Line Vacuum Breaker

 

Feeder Protection Circuit Breaker

 

Substation Outlet Vacuum Breaker

 

 

Auto-Reclosing Vacuum Breaker

 

Sectionalizing Vacuum Circuit Breaker

 

Fault Interrupting Vacuum Switch

 

 

HV Vacuum Switch

 

Line Vacuum Interrupter

 

Outdoor Circuit Interrupter

 

Pole-Top Vacuum Breaker

ZN85 Outdoor Vacuum Circuit Breaker - Primary Applications

 

Core Function & Purpose

The ZN85 Outdoor Vacuum Circuit Breaker serves as a vital protection and control device in medium-voltage power distribution networks. Its primary function is to reliably make, carry, and break currents under normal circuit conditions, and to automatically interrupt fault currents during emergency situations.

 

Key Application Areas

 

1. Distribution Line Protection

- Overhead line feeder protection in 35kV and below systems

- Automatic sectionalizing of distribution networks

- Fault isolation and service restoration

 

2. Substation Applications

- Main protection for substation outgoing lines

- Backup protection for transformer circuits

- Bus tie breaker in switching stations

 

3. Industrial Power Systems

- Primary protection for factory incoming lines

- Large motor circuit protection

- Critical load circuit control

 

4. Infrastructure Projects

- Renewable energy grid connection points

- Railway electrification systems

- Mining and industrial park power supply

 

5. Special Applications

- Frequent load switching operations

- Capacitor bank switching

- Cable charging current interruption

 

Operational Advantages

- Suitable for both pole-mounted and ground-mounted installation

- Excellent performance in harsh environments

- Minimal maintenance requirements

- Compatible with various automation systems

 

The ZN85 provides reliable circuit interruption and system protection where operational safety and power reliability are essential, making it an ideal solution for modern smart grid applications.

 

Competitive Advantages of ZN85 Outdoor Vacuum Circuit Breaker

1. Superior Technical Performance

- Breaking capacity up to 25kA, exceeding standard requirements

- 10,000 mechanical operations without maintenance

- 0.06s rapid fault clearance capability

- 100% rated current breaking capacity at 12kV

2. Advanced Vacuum Interruption Technology

- Patented axial magnetic field contacts for uniform arc distribution

- High-quality ceramic vacuum interrupters from certified suppliers

- Stable performance over entire electrical lifespan

- Ultra-low contact erosion rate (<2mm after 100 operations at 25kA)

3. Enhanced Safety Features

- Fully insulated enclosed design

- Visible isolation gaps meeting safety standards

- Comprehensive mechanical interlocks

- IP54 protection degree for harsh environments

4. Smart Operation Capabilities

- Integrated microprocessor protection

- Real-time monitoring and communication interface

- Remote control and automation compatibility

- Predictive maintenance alerts

5. Quality Assurance

- 100% routine testing including:

- 42kV power frequency withstand voltage (1 minute)

- Contact resistance measurement (<50μΩ)

- Mechanical operation timing tests

- Certified to GB/T 11022, IEC 62271-100

- 3-year product warranty

6. Customization Services

- Special configurations for extreme environments

- Retrofit solutions for existing switchgear

- Customized control voltage options

- OEM manufacturing available

Our ZN85 breakers combine 20 years of manufacturing expertise with continuous innovation, delivering 99.98% operational reliability and reducing maintenance costs by 50% compared to conventional solutions.