1、 Purpose

S137 DC contactor is mainly used in the circuit with DC working voltage up to 220 V, which can make break DC circuit remotely, especially suitable for the control of heating, water heater lighting of railway locomotive. It is suitable for controlling frequent starting inductive coil of DC motor.

2、 Conditions of use

1. The altitude is more than 2000m;

2. The ambient air temperature shall be higher than + 40 ℃ lower than - 25 ℃;

3. The inclination between the installation surface the vertical surface shall exceed 10 °;

4. It is installed in the environment that can prevent rain, wind sand;

5. There is no explosion risk, conductive dust, insulation damage gas places that corrode metal.