The Siemens 3RT25 series power contactor has screw terminals and its used for changing the polarity of hoisting gear motors or switching two separate loads. The 3RT25 contactor offer convincing performance and high contact reliability despite their compact design. They can be combined with a variety of other components in the load feeder. The contactor offer the best connection to the automation level for each application. Integrated auxiliary switches reduce the complexity of your design. The front-panel terminals simplify the wiring. The 3RT25 contactor are climate-resistant and approved for worldwide use (e.g. IEC and UL/CSA). Mounting type is screw and Snap-On mounting Ambient operating temperature is -40 to +70 °C Protection class for frount IP20 and terminals is IP00