Skip to content 
Product Overview
The ZMK7-12 is centered around a multi-functional integrated air-insulated vacuum circuit breaker. This unit masterfully integrates the vacuum circuit breaker, isolation switch, earthing switch, and live sensors into a single compact assembly. It is designed to replace traditional SF6 and solid-insulated RMUs in urban and rural grids, offering a “green” alternative without compromising on space. The cabinet dimensions are optimized at 450mm (W) x 1000mm (D) x 1800mm (H), ensuring it fits easily into restricted spaces.
Product Features
- Eco-Friendly Design: As an air-insulated unit, it is completely free of SF6 gas, making it safer for the environment and easier to recycle at the end of its life cycle.
- Highly Integrated Components: Features the ZMK7-12 multi-functional breaker which combines four functions (switching, isolating, earthing, and sensing) in one, reducing complexity.
- Visible Isolation Breaks: Unlike SF6-filled or solid-insulated units, the ZMK7-12 provides clear visual confirmation of the isolation gap, significantly enhancing operational safety.
- Flexible Operating Mechanisms: Supports both standard spring-operated mechanisms and advanced permanent magnet mechanisms to suit different automation requirements.
- Superior Safety Interlocks: Equipped with a robust “Five-Prevention” mechanical interlocking system to prevent accidental contact with live parts and operational errors.
- Compact Miniaturization: Despite using air as the medium, the unit achieves the same compact size as gas-insulated cabinets, allowing for seamless replacement and upgrades.
Technical & Artistic Details
To maintain peak performance, the equipment is designed for the following conditions:
- Altitude & Temperature: Suitable for altitudes up to 2000m and ambient temperatures up to +40°C.
- Humidity Management: Daily and monthly average relative humidity stays within ≤ 95%.
- Pollution Resistance: Designed for environments free from corrosive gases, flammable vapors, or heavy steam contamination.
- Stability: Built to withstand environments without frequent or intense mechanical vibration.
