Resideo R24BA1006 Heat Sequencer 323055-751 and they are direct replacements

and they are direct replacements for one another

this is a genuine Modine replacement part specifically engineered for PA series units

Rugged Construction: Built with industrial-grade relays and circuitry to withstand the high-temperature environment of a furnace vestibule

This unit is designed with CCWLE rotation (Counter-Clockwise Lead End) and a 1/2-inch diameter shaft

Resideo R24BA1006 Heat Sequencer 323055-751 and they are direct replacementsThe Resideo R24BA1006 Heat Sequencer is a field proven 2 stage electric heat relay designed for precise sequencing of heating elements and blower motors in residential and light commercial air handlers. Operating on a standard 24Vac input voltage, this sequencer features a 1 20 second on timing delay for both switches to prevent nuisance tripping and massive inrush current. For cool down cycles, both switches provide a 40 110 second off timing delay,