S137 series DC contactorDetailed product description：

1、 Purpose:
The S137 DC contactor is mainly used in circuits with DC working voltage up to 220V, to remotely connect and disconnect DC circuits, and is particularly suitable for controlling railway locomotive heating, water heaters, lighting, etc. Not suitable for controlling frequent starting of DC motors and inductive coils.
2、 Usage conditions
1. Altitude not exceeding 2000m;
2. The ambient air temperature shall not be higher than+40 ℃ and not lower than -25 ℃;
3. The inclination angle between the installation surface and the vertical surface shall not exceed 10 °;
4. Installed in an environment that is resistant to rain, wind, and sand;
5. There is no explosion hazard, no conductive dust, no damage to insulation, and no gas that can corrode metals in the surrounding air.