Armstrong Furnace R20518401 Sequencer 321894-708 000 AFC protected

000 AFC protected

or 208V primary voltage to a stable 24V secondary output

Key Benefits: OEM Precision: Genuine Rheem-Ruud factory replacement ensures exact fitment and prevents common field-adjustment issues

5") and your specific coil model number prior to installation

Armstrong Furnace R20518401 Sequencer 321894-708 000 AFC protectedOptimize your heating system with the genuine Armstrong Furnace R20518401 Sequencer. Also recognized as the ELEC. HEAT SEQUENCER, this OEM replacement part is engineered to manage the staged activation of heating elements in electric furnaces and air handlers. By preventing all elements from powering on simultaneously, this 24V heat relay protects your electrical system from circuit overload and ensures a smooth, consistent distribution of warmth. Its