ZN18-12 High voltage vacuum circuit breakerDetailed product description：

Overview
The ZN18-12 (CK) vacuum circuit breaker is a derivative product developed based on the ZN18-12 (VK-10) vacuum circuit breaker to meet market competition demands and meet user requirements. Its main purpose is to enable the installation of the ZN18-12 (VK) vacuum circuit breaker on switchgear models such as ZS1 (ABB) and GZS1 (Senyuan), providing users with an additional choice of vacuum circuit breaker.

II. Environmental conditions for use
1. Surrounding air temperature:+40 ℃~-15 ℃, and the average value measured within 24 hours does not exceed 35 ℃; Daily temperature difference less than 15k;
2. The altitude shall not exceed 1000m;
3. The surrounding air is not significantly polluted by dust, smoke, corrosive or combustible gases, steam or salt spray;
4. Relative temperature of indoor environment: daily average not exceeding 95%, monthly average not exceeding 90%;
5. The seismic intensity shall not exceed 8 degrees;
6. Indoor use;
7. Any requirements beyond the above environmental conditions shall be agreed upon by the user and the manufacturer.

Scope of use of ZN18-12 high-voltage vacuum circuit breaker
• Rated voltage 12kV;
Rated current 630A, 1250A, 3150A;
Rated short-circuit breaking current 25kA, 31.5kA, 40kA;
It can be used as a control and protection switch for substations, especially suitable for breaking important loads and frequent operations, such as substations and capacitor banks that require small footprint, oil-free safety and high reliability.