Contactor selection for heater circuit

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Old 02-21-20, 05:24 PM
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Contactor selection for heater circuit

I need help choosing the right contactor for a Yoga room heat project. 3 - 120v 1500w infrared heaters controlled by either 120v smart switch(turn on heaters remotely thru an app) or a 24v wifi t-stat(also ability to set temp remotely).
2 pole 30A contactor?
 
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Old 02-21-20, 07:55 PM
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Welcome to the forums.

A 120v 1500w heater cannot be connected to a circuit over 20A.
You should put each heaters on its own 20A circuit.
You could use a 3 pole contactor to switch all three heaters. A thermostat could control a contactor like this directly. An example of one is below.

Three pole contactor 24vac coil
 
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Old 02-22-20, 06:58 AM
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AHH! Not I totally get it. For some reason I thought I was fusing the contactor at total amp Capacity. It's just a pass thru device to have all heaters turn on at the same time. Thank you for clearing this up for me
 
 

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