As a global leader in the field of power equipment, we always focus on technological innovation and customer needs, and are committed to providing customers with efficient and reliable vacuum circuit breaker solutions.VEGM-40.5 and ZN85-40.5 are two of our flagship products, which are designed for different application scenarios and customer needs. This article will help you better understand the difference between the two and make a wise choice from the perspective of technical parameters and performance.

1. Comparison of technical parameters
Although VEGM-40.5 and ZN85-40.5 are vacuum circuit breakers of the same 40.5kV voltage level, there are significant differences in specific technical parameters:
| Parameter | VEGM-40.5 | ZN85-40.5 |
|---|---|---|
| Rated voltage | 40.5kV | 40.5kV |
| Rated current | 2000A-3150A | 1250A-2500A |
| Breaking capacity | 31.5kA | 25kA |
| Electrical life | 10,000 operations | 8,000 operations |
| Mechanical life | 20,000 operations | 15,000 operations |
| External dimensions | Large for spacious installations | Compact for environments where space is limited |
| Protection class | IP54 | IP42 |
2. Analysis of performance characteristics
VEGM-40.5:
High breaking capacity: 31.5kA breaking capacity makes it suitable for high load scenarios such as high voltage substations and large industrial facilities.
Long electrical life: 10,000 operating cycles significantly reduces maintenance costs, making it suitable for frequent operation.
Environmental Adaptability: IP54 protection rating and corrosion resistant design make it suitable for extreme environments such as coastal areas or chemical plants.
ZN85-40.5:
Compact design: small size, suitable for distribution rooms or small substations with limited space.
Economical and efficient: 25kA breaking capacity and 8,000 times electrical life fully satisfy the regular needs of medium voltage distribution systems.
Easy to install: Modular design simplifies the installation and maintenance process and is suitable for rapid deployment.
3. How to choose?
Scenarios for selecting VEGM-40.5:
High voltage substations requiring high breaking capacity and long electrical life.
Harsh environmental conditions (e.g. high temperature, high humidity, corrosive gases).
Scenarios where the stability and reliability of the equipment are required to be extremely high.
Scenarios for choosing ZN85-40.5:
Medium voltage distribution system or small substation.
Limited installation space and need compact equipment.
Limited budget but still need cost-effective solution.
4.Contact us
Whether you choose VEGM-40.5 or ZN85-40.5, we will provide you with customized solutions. Our professional team will help you choose the most suitable product for your specific needs and ensure full process support from installation to maintenance!please contact us at:




