Lifecycle and fit — active production, PCB for 3RW44 frames
The 3RW4756-0WC50: It is a TSE PCB rated for 690 V, designed as a replacement/control board for the 3RW4453, 3RW4454, 3RW4455, and 3RW4456 soft starter frames. The product designation is 'Printed circuit board' — this is not a complete soft starter but the internal control/interface PCB that governs the thyristor firing and protection logic.
Compliance and sourcing posture
The substance prohibitance date of 03/01/2017 aligns with RoHS compliance cutover — relevant for EU and UKCA markets requiring restricted-substance declarations.