Heating and Cooling Components Materials

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R24 Series Electric Heat Sequencers
Electric Heat Sequencers
Product # Switches Timings
Timings — ON Timings — OFF
M1-M2 M3-M4 M5-M6 M7-M8 M9-M10 M1-M2 M3-M4 M5-M6 M7-M8 M9-M10
R24AA1008
1 1 1-20 40-110
R24AA3004
1 1 30-90 1-30
R24BA1006
2 1 1-20 1-20 40-110 40-110
R24BA3002
2 1 30-90 30-90 1-30 1-30
R24CB4007
3 2 1-110 1-110 1-110 1-110 1-110 1-110
R24DB4005
4 2 1-110 1-110 1-110 1-110 1-110 1-110 1-110 1-110
R24ED5007
5 4 1-160 1-160 1-160 1-160 1-160 1-160 1-160 1-160 1-160 1-160
R24AA3429
Canada
1 1 15-35 25-55
Heat Pump — Air Handler Model
Model # Switches Timings Heat Cool
R24AA2006 1 1 1-60 75-95
The positive temperature coefficient (PTC) heater element provides voltage
compression over a wide voltage range without danger of over-heating at
high voltage. It is self-current limiting, and assures device actuation under
low-voltage conditions. The PTC has the unique feature of always stabilizing
at a specific temperature, regardless of ambient temperature or voltage. This
will allow the use of a common device over a wide voltage range.
Temperature: -50˚ F to 165˚ F
Table Notes:
• M1-M2 and M3-M4 are always first switches to turn ON and last to turn OFF.
All other switches are random ON and random OFF.
• R24ED5007 Switch contacts designated F1-F2 instead of M1-M2.
• R24BB3428 is Double Pole Double Throw model.
• R24AA2006 is a Single Pole Double Throw model for Heat Pump Applications.
• These contacts switch simultaneously.
ON Time: Elapsed time (min. to max.) to make contact after heater is energized.
OFF Time: Elapsed time (min. to max.) to break contact after heater is de energized.
Terminations: Solder or screw type 1/4” quick connect
Ratings: Estimate — 25 A resistive and 14 A inductive at 120 Vac
SPST: Single Pole Single Throw
DPST: Double Pole Single Throw
SPDT: Single Pole Double Throw
DPDT: Double Pole Double Throw
Agency: UL/CSA