Reversing contactor assembly, 50 A at 24 VDC coil
The 3RA9012-5AV22: The 2NO-2NC auxiliary contacts per contactor give you feedback and interlock wiring without adding a separate aux block.
What the 50 A rating means in a panel
For a reversing starter, both contactors are mechanically and electrically interlocked so only one closes at a time, preventing phase-to-phase shorts on reversal. The built-in suppressor clips the inductive kickback when the coil de-energizes, which keeps noise off the 24 VDC bus and extends the life of the PLC output driving it.