Resttable PTC Fuses

Schurter Polymeric Positive Temperature Coefficient (PPTC) fuse enable convenient protection of low voltage supplies, with the advantage of rest.
At normal temperature there are numerous carbon chains forming conductive paths through the device.
Under fault conditions, I²R heating causes the carbon chains to be pushed apart, with most of them no longer conducting current and the resistance of the device increases sharply.
The PPTC remains latched, providing continuous protection, until the fault is cleared and the power is removed.
Reversing the phase transofrmation allows the carbon chains to reform as the polymer re-crystallises.
The resistance quickly returns to its original value.

 

Product Description:

Resettable PTC Fuses Radial Leaded

Part No. Description Price (ex.GST) Unit Availability Order Qty
34-PFRA.025 Fuse Resettable 250mA Hold
$2.0020
1-24 $2.0020,
25-99 $1.8018,
100-499 $1.6016,
500-999 $1.4014,
1000-4999 $1.4014,
5000+ $1.4014
ea Available  Add to Cart
34-PFRA.090 Fuse Resettable 900mA hold
$2.0020
1-24 $2.0020,
25-99 $1.8018,
100-499 $1.6016,
500-999 $1.4014,
1000-4999 $1.4014,
5000+ $1.4014
EA Available  Add to Cart
34-PFRA.135 Fuse Resettable 1350mA Hold
$2.0020
1-24 $2.0020,
25-99 $1.8018,
100-499 $1.6016,
500-999 $1.4014,
1000-4999 $1.4014,
5000+ $1.4014
ea Available  Add to Cart
34-PFRA.185 Fuse Resettable 1850mA Hold
$2.5410
1-24 $2.5410,
25-99 $2.2869,
100-499 $2.0328,
500-999 $1.7787,
1000-4999 $1.7787,
5000+ $1.7787
ea Low  Add to Cart
34-PFRA.300 Fuse Resettable 3000mA Hold
$2.8270
1-24 $2.8270,
25-99 $2.5443,
100-499 $2.2616,
500-999 $1.9789,
1000-4999 $1.9789,
5000+ $1.9789
ea Low  Add to Cart
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