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30amp "breakers"

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Old Sep 9, 2005 | 02:33 AM
  #1  
88Camaro350's Avatar
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From: B'ville, WV
Car: 2002 Formula Firebird
Engine: LS1
Transmission: 4l60e
Axle/Gears: 3.23
30amp "breakers"

Anyone know where I can get 2 good OE quality 30amp breaker switches. The two in the fuse box.

My blower motor stopped working so I pulled the two breakers. Swapped them and my blower motor began to work. So I bought two 30 amp breakers from work (advance auto). Blower motor works but now my power locks don't work. My defroster will only turn on for a second then clicks off.

I assume the 30amp breakers from advance can't take the load. Anyone know where I can get good ones?

BTW are they cycling or non-cycling?
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Old Sep 10, 2005 | 04:34 PM
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Vader's Avatar
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I believe the OEM breakers were rated at 35A. Either way, the blower fan should not be drawing anywhere near 30A under normal circumstances.
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Old Sep 10, 2005 | 11:21 PM
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88Camaro350's Avatar
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From: B'ville, WV
Car: 2002 Formula Firebird
Engine: LS1
Transmission: 4l60e
Axle/Gears: 3.23
If I turn on multiple accessories it will not work properly.

Right now my power locks aren't working. Switch them and everything will work...for awhile. Then something will stop. Usually the locks.

I want to try better breakers and see if that helps. The ones from advance may just be trash.

Are they cycling or non cycling?
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Old Sep 11, 2005 | 11:05 AM
  #4  
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"Cyclling or non-cycling?"

I'm sorry, but I'm not familiar with those terms. My 20+ years in electrical engineering has kept me somewhat insulated from the automotive electrical world and their home-grown language and descriptions of devices, so I haven't seen that description as it might be applied to circuit breakers.

If you're asking if they are supposed to be self-resetting or not, that I can understand. They should be self-resetting, and the recycle time of a purely thermal (bimetallic) circuit breaker depends heavily on the trip mode. A sustained, near-limit trip event should theoretically result in a shorter reset time, whereas a heavy overload current trip would heat the bimetal element much more, and result in a longer reset time.

This, of course, applies only to mechanical thermal circuit breakers. You can likely locate and download the thermal characteristic of bimetal breakers from a reputable manufacturer or supplier, such as Newark or Mouser.
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