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Supco Q103 24V Heat Sequencer - Replacement for 24A34-3

SKU Q103
Currently 20 in stock.

Supco Q103 24V Heat Sequencer - Replacement for 24A34-3

Q Series Sequencer, field proven for controlling the operation of heating elements and/or blower motors in electric, gas or oil heat systems. This sequencer has 2 switches & turns on at 1-20 seconds, and off at 40-110 seconds.


  • UL® and CSA® approved
  • 24 volt control circuit
  • Five second delay between all subsequent stages, unless they function together
  • WARNING: Prop 65 info


Timing: Contacts M1-M2 will turn on 1st and turn off last
Off: 40 - 110 Seconds
On: 1-20 Seconds




  • Oil furnaces
  • Gas furnaces
  • Heat pumps
  • Electric furnaces



Goodman® / Janitrol®: BT1256504
Carrier® / ICP®: HQ1056789, HN67QC005
Mars®: 33244, 33844
White Rodgers®: 24A34-3
Klixon®: 6000AOIN-87, 60000EO-102
Interstate Electric I-9®: 1ES24A34-3
Zettler®: ZC24A34-3
Packard: HS24A343