Resettable Fuses

The PPTCs are known under the trade names PolySwitch or Multifuse. Here PPTC stands for the English name Polymer Positive Temperature Coefficient. PPTCs are the perfect solution for the demanding circuit protection.

If the maximum allowed power is exceeded, the PPTC and a high impedance, whereby the flow is throttled under the normal current heats. After cooling the polymer PTC, it falls back into its original state. Their properties polymer PTCs are an inexpensive solution for short circuit protection and overload protection.


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Technical Basics Polymer PTC

Polymer PTC radial leaded


Hold Current: 0,05A ~ 14A

Voltage: 16 ~ 600VDC

Imax.: 1A to 100A

Temperature Range:

-40°C to +125°C


Polymer PTC axial leaded


Hold Current: 0,7A ~ 7,3A

Voltage: 12 ~ 30VDC

Imax.: 100A

Temperature Range:

-40°C to +85°C


Polymer PTC SMD Typs


Hold Current: 0,01A ~ 3A

Voltage: 6 ~ 60VDC

Imax.: 10A to 100A

Temperature Range:

-40°C to +85°C


Polymer PTC radial leaded Polymer PTC SMD types Polymer PTC axial leaded

Polymer PTC SMD Typs (Low Rho)


Resistance is lower than the industry standard

Hold Current: 0,25A ~ 6A

Voltage: 6 ~ 9VDC

Imax.: 100A

Temperature Range:

-40°C to +85°C


Polymer PTC axial leaded (Low Rho)


Resistance is lower than the industry standard

Hold Current: 1,4A ~ 7,0A

Voltage: 6VDC

Imax.: 50A

Temperature Range:

-40°C to +85°C


Polymer PTC axial leaded (Low Rho) Polymer PTC SMD types (Low Rho)


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