PTC Resettable Fuses

ogaugenutOGR Forum Member SUPPORTING MEMBERDIGITAL SUBSCRIBER

I have read some past threads about the PTC resettable fuses. Several people use them for fusing cars, engines and track feeds and they are inexpensive. Sounded good, so I was going to get some to try. Digikey list over 4000 of them. I was searching and reading the specs and a recommended size for a ZW output to a track loop was 6 amp hold @ 30 V. According to the Digikey specs the trip time is 16 seconds. That sounds worse than a traditional ZW breaker. I know a lot of respected forum members use these devices. What am I missing or not understanding?

Bill

12/10/133:59 PM

Original Post

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