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E1/T1 Line overcurrent protection circuit questions

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Black Jack

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In E1/T1 lines used F1250 Fuse for overcurrent protection.
But can I use resettable fuses?
Which componet and Mfg.?
 

alphi

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use Polyswitch
 

papyaki

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Hi,

Look at app notes from line interface manufacturer like this one :

h**p://www.intel.com/design/network/products/WAN/applnots/24915901.pdf

You can also look at maxim / pmc sierra / zarlink etc.

* = t
 

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