The 3SB3400-1RA is a 3-pole contactor from Siemens. It is a multi-voltage device designed for the protection and control of electrical motors up to 5 HP. It is rated for use with AC voltage up to 690V, with a current of up to 18A. It contains built-in reverse pole protection, a temperature monitor, separate auxiliary switch connections, and an integrated surge protection system. It has a mounting depth of 40mm and a width of 63mm. It is also equipped with integrated LED indicator lights for easy diagnostic purposes. It's UL, CSA and VDE certified, and rated IP00.