The Siemens 3RW4747-0LC00 is a power semiconductor module rated for 690 V and 432 A, designed as a replacement or build-up component for the 3RW4447 soft starter — two units are needed per device. This is not a standalone contactor or a complete starter; it is the semiconductor switching stage that handles the motor current during the soft-start ramp. When a 3RW4447 loses a power module on the line, this is the part that swaps in.
What the 432 A / 690 V rating means in practice
The 432 A rating is the module's continuous current capacity — it governs the maximum motor FLA the 3RW4447 can soft-start. Two modules in parallel inside the starter handle the full line current; if one module fails, the starter cannot complete the ramp and must be taken offline until this part is replaced. At 690 V, this module is sized for 690 V three-phase systems. The insulation coordination is built for that voltage class.
RoHS compliance is established with a substance prohibitance date of 05/01/2012, covering the standard EU restricted substances. No REACH or UL listing is specified in the available documentation, but the Siemens SIRIUS series typically carries CE and UKCA marking for the European market. Pricing and lead time are confirmed at quote time.