The Siemens 3RW4727-0VC70 is a firing printed circuit board rated for 460 V, designed specifically for the 3RW44 soft starter in Size 2. It generates the gate-firing pulses that control the thyristors during motor acceleration and deceleration, so a failed board means the soft starter won't start the motor — no ramp, no bypass. If you're holding a 3RW44 Size 2 with a dead firing section, this is the board that goes back in.
Siemens 3RW4727-0VC70 Firing PCB for 3RW44 Size 2
MPN3RW4727-0VC70
Siemens SIRIUS 3RW4727-0VC70 firing PCB, 460 V, for 3RW44 soft starter Size 2, printed circuit board, lifecycle stage current.
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026
Specifications
| Parameter | Value |
|---|---|
| Product designation | Printed circuit board |
| Parameter | Value |
|---|---|
| Substance prohibitance | 03/01/2017 |
Product details
Frequently asked questions
What is the 3RW4727-0VC70 and what is its function?
The 3RW4727-0VC70 is a firing printed circuit board for the Siemens 3RW44 soft starter in Size 2. Its function is to generate the gate-firing pulses that control the thyristors, enabling the soft starter to ramp a motor up and down. Without it, the soft starter cannot start the motor.
MPN
3RW4727-0VC70