Resideo RA889A1001 Switching Relay 319852-301 What is the frame size

What is the frame size and shaft dimension for the Fasco D503

As a veteran-grade HVAC motor

this SC15G compressor delivers a robust 1/2 HP performance

preventing the gas control valve from closing prematurely due to weak flame rectification

reducing the load on the control transformer while ensuring a robust 3-pole normally open contact engagement

Resideo RA889A1001 Switching Relay 319852-301 What is the frame sizeThe Resideo RA889A1001 Switching Relay is a heavy duty solution for intermediate switching of line and low voltage devices in hydronic heating systems. Engineered for 120Vac primary voltage, this relay features a Single Pole Double Throw (SPDT) configuration paired with a PowerPile rated low voltage SPST relay, making it ideal for converting millivolt systems to modern 24V control. The integrated transformer secondary rating of 24Vac provides 9 VA for