I. Overview
The F12 series auxiliary switch is one of the supporting components for the high-voltage switch operating mechanism. Applicable to the control of closing and opening of high-voltage switch spring mechanisms, as well as the indication of interlocking signals.

Key Features:
1. There are DC contacts specifically designed to control the closing and opening coils of DC 220V or 110V, with a breaking current of up to 10A when the current is DC220V.
2. The contact is a silver alloy bridge type double break point structure, which has the advantages of reliable connection and anti-oxidation and corrosion resistance compared to existing auxiliary switches.
3. This series of auxiliary switches has the advantages of simple structure, easy use, and long service life, making it an ideal replacement product.
2、 Usage conditions
1. Environmental air temperature: -40 ℃~+40 ℃;
2. The installation location shall not exceed an altitude of 2000m;
3. The conditions are as follows: the average relative humidity measured within 24 hours shall not exceed 95%; The average water vapor pressure measured within 24 hours shall not exceed 2.2 kPa; The average monthly relative humidity does not exceed 90%; The average monthly water vapor pressure shall not exceed 1.8kPa, taking into account the condensation that may occur on the surface of the product due to temperature changes;
4. Acceleration not exceeding 15m/²;
5. The air is not significantly polluted by dust, smoke, corrosive and flammable gases, steam, or salt spray.

5、 Structural characteristics
1. The contact is a bridge double break structure, and the contact material is AgNilo;
2. The switch contacts can be equipped with permanent magnet arc extinguishing, and the quantity can be made according to user requirements;
3. Various delay contacts can be made, and users need to provide clear technical requirements.