Reply
 
Thread Tools Search this Thread Display Modes
 
Old 12-12-2017, 07:25 PM   #1
Airstream Driver
 
PeterH-Airstreamer's Avatar

 
1994 30' Excella
1992 35' Airstream 350
Austin , Texas
Join Date: Feb 2002
Posts: 4,179
Images: 51
best 12v breaker replacement

the original thermal stud mount breakers in my 97 excella are failing one by one.
Which would be the best to replace them with?:
Type 1 auto reset
Type 2 Modified reset
>>The breaker will operate until tripped, when an internal resistor will keep the breaker in the off position until power is completely removed from the circuit. This process recycles until the source of the overcurrent is removed or corrected.<<
Type 3 Manual reset
__________________
1994 30' Excella Front Kitchen Trailer
1992 350LE Classic Motorhome
AIR #13
PeterH-Airstreamer is offline   Reply With Quote
Old 12-13-2017, 04:55 AM   #2
Airstream Driver
 
PeterH-Airstreamer's Avatar

 
1994 30' Excella
1992 35' Airstream 350
Austin , Texas
Join Date: Feb 2002
Posts: 4,179
Images: 51
I decided to go with the 20amp parallel Bracket type 3 manual reset. The auto reset is convenient, but the manual reset gives the user more control over the situation.
https://www.delcity.net/store/Manual...98672.h_201365
__________________
1994 30' Excella Front Kitchen Trailer
1992 350LE Classic Motorhome
AIR #13
PeterH-Airstreamer is offline   Reply With Quote
Old 12-13-2017, 05:39 AM   #3
Rivet Master
 
overlander63's Avatar

 
1993 21' Sovereign
Colfax , North Carolina
Join Date: Jun 2003
Posts: 21,236
I prefer the manual reset types. With the auto-reset breakers, if there is a short, they can, and probably will, continue resetting themselves until they fail. And while they shouldn't fail in the closed position, I have been around long enough to know nothing ever works 100% as designed.
__________________
Terry
overlander63 is offline   Reply With Quote
Old 12-13-2017, 08:52 AM   #4
Rivet Master
 
66Overlander's Avatar
 
1962 22' Safari
2016 30' Classic
Southeast , Michigan
Join Date: Mar 2004
Posts: 2,618
Images: 41
Manual reset us the safest as it puts a person in control.

I would never use a cycling breaker that repeatedly closes into a short circuit fault condition, which can continue until the breaker fails, especially there is no one present to notice anything unusual going on.

Modified reset can be an issue when battery voltage sags and the heating resistor cannot cause enough heat to keep the breaker open, effectively causing the breaker to become a cycling breaker closing repeatedly into a short.

And I have seen cases of 12v automotive type circuit breakers failing shorted with undesirable consequences. There is no 12V automotive breaker made that is guaranteed to fail open and they only have a limited cycle life. Keeping cycle count down is good and best done with a manual reset.
__________________
Joe
Wally Byam Caravan Club International Historian
Vintage Airstream Club Historian
WBCCI/VAC #6768

66Overlander is offline   Reply With Quote
Old 12-13-2017, 10:44 AM   #5
:SPACE A" S/O 11 Air19745
 
guskmg's Avatar

 
2006 34' Classic S/O
Fort Worth , Texas
Join Date: Feb 2007
Posts: 1,289
Type 2 or 3 only. I have had both TT and TV fires from just the TT circuit breaker resetting when there as a low grade short. Think overloaded for a long period of time, then a cascading failure and a harness fire.
guskmg
guskmg is offline   Reply With Quote
Old 12-13-2017, 05:37 PM   #6
Rivet Master
 
gklott's Avatar

 
2004 30' Classic
Johnson City , Texas
Join Date: Jun 2003
Posts: 583
Images: 86
Type 2 for trailer brake circuit - directly from batteries.
Type 3 for all others.

73/gus
__________________
Gus - KR4K : Mary - K5MCL
2004 30ft. Classic
2017 Infiniti QX80 Limited
ProPride 3P/Prodigy P3
gklott is offline   Reply With Quote
Reply

Tags
12v


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
location of 12V breaker fuses GatorDave Jacks, Stabilizers, Lifting and Leveling 8 04-02-2016 12:24 PM
Breaker, Breaker!! Bing-Bing Generators & Solar Power 25 09-24-2013 08:25 PM
breaker breaker project66 Batteries, Univolts, Converters & Inverters 4 05-29-2012 08:37 PM
circuit breaker for 12v stays off airhaus Batteries, Univolts, Converters & Inverters 6 06-06-2009 10:38 AM
1999 cutter 12v breaker location apetit Flat-Front (Cutter, Clipper, XC, XL & Skydeck) Motorhomes 8 12-28-2004 02:22 PM


Featured Campgrounds

Reviews provided by

Disclaimer:

This website is not affiliated with or endorsed by the Airstream, Inc. or any of its affiliates. Airstream is a registered trademark of Airstream Inc. All rights reserved. Airstream trademark used under license to Social Knowledge LLC.



All times are GMT -6. The time now is 03:43 AM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2020, Jelsoft Enterprises Ltd.