3TF40

Manufacturer: Siemens

3TF40 Siemens Load Contactor

The 3TF40 is part of Siemens' 3TF family of load contactors used for switching power to motors and other heavy AC loads. This family provides mechanical switching of supply lines; exact electrical ratings (coil voltage, rated operational current, auxiliary configuration) vary by specific 3TF40 variant and must be confirmed for the unit being sourced. Typical applications include motor starters, contactor-based control panels, and power distribution switching in industrial machinery.