Greenheck 383561 Relay 320819-301 and calipers to verify the

and calipers to verify the placement of the fan wheel and drive pulley are recommended

a precision-engineered auxiliary switch block designed for secondary switching and status feedback

Will this fit standard residential boilers

What parts can the MA40-7170 replace

Industrial-Grade Housing: The cast iron pillow block design offers superior heat dissipation and resists deformation under stress

Greenheck 383561 Relay 320819-301 and calipers to verify theThe Greenheck 383561 Relay is a professional grade DPDT 24VAC HEAT RELAY designed for heavy duty switching in commercial and industrial HVACR systems. As a genuine Greenheck OEM replacement part, it ensures seamless compatibility with existing control circuits, eliminating the guesswork often associated with universal aftermarket components. This Double Pole Double Throw configuration allows for the simultaneous management of two independent circuits,