The VTZ-12M is an explosion-proof permanent magnet vacuum circuit breaker designed specifically for special environments such as mining. Its core advantage lies in combining solid-sealed pole technology with a highly reliable permanent magnet operating mechanism, resulting in enhanced safety, durability, and lower maintenance costs.
product advantages
Permanent Magnet Operating Mechanism
Stable and Reliable, Extremely Low Maintenance Costs
Compared to traditional spring operating mechanisms, the permanent magnet mechanism is the core advantage of the VTZ-12M, fundamentally improving the circuit breaker's performance and reliability.
Intelligent Configuration:
a. Optional self-powered wireless temperature monitoring solution, ensuring safe operation and maintenance-free operation;
b. Mechanical characteristic monitoring solution, which tracks circuit breaker operating data in real time, enabling early detection and resolution of potential hazards;
c. Electric cabinet door opening solution, supporting remote operation and ensuring personnel safety;
d. Real-time component aging detection for testing to meet regulatory requirements.
Emergency Manual Operation
Equipped with manual closing and tripping devices for emergency power supply/power outages; a reliable mechanical interlock between the circuit breaker and the cabinet ensures operator safety; the electric chassis supports unattended remote operation.
High Conductivity: A well-designed conductive circuit meets temperature rise requirements at 1.1 times the rated current.
Solid-Sealed Pole Technology
The VTZ-12M utilizes "solid-sealed pole" technology, integrally casting and curing core components such as the vacuum interrupter with high-performance epoxy resin to form a single pole.
Excellent Environmental Adaptability: Transforming surface insulation into volume insulation fundamentally solves the problem of traditional air insulation being susceptible to dust and moisture, making it particularly suitable for harsh environments such as underground, high-humidity and high-heat, and heavily polluted environments.
Strong Versatility and Compatibility: The withdrawable unit is suitable for all locations requiring explosion-proof power supply facilities and can be used with various mining-grade high-voltage explosion-proof switchgear.
Products technical specification

Rated Voltage:12kV
Rated Frequency:50Hz
Rated Current:630/1250A
Rated Short-Circuit Breaking Current:25*31.5kA
Mechanical Endurance:≥20000 times
Operating Mechnism :permanent magnet mechanism
In summary, the core advantages of the VTZ-12M circuit breaker lie in the combination of its high reliability and long lifespan of permanent magnet mechanism and the high insulation of solid-sealed pole technology. It also ensures the highest level of safety through manual emergency operation design, providing a high-value solution for applications with stringent stability requirements, such as coal mines and power plants.
Our address
No. 1 East Gaoxin Avenue in the High-Tech Development Zone of Baoji City, Shaanxi Province,china
86-18091765882(Grace liu Sales manager )
xdtz04@westpowerelectric.com





