Application Field:

PTC thermistors are used to monitor temperature in machines and installations. The design ensures short response times and easy installation.

The Product Sells Point

PTC thermistors acc. to DIN 44081(triple sensors acc. to DIN 44082) are used to protect electrical machines against thermal overload. Thermistors have an even steeper R/T characteristic as that defined in the DIN standard. The temperature range is from 60 to 180. PTC thermistors beads with different rated response temperatures can be connected in series. This permits an optimal and economic thermal protection of machines and windings with different limit tempratures.

Key Specifications/Special Features

                                                      single         triple
Max.operating voltage                        30              30     V
Rated response temperature                  Tk60-18           C 
Tolerance of Tk                                  ±5              ±5     K
Resproducibility of Tk                         ±0.5           ±0.5   K
Resistance R25                                 ≤100          ≤300   Ω
Resistance at a temperature of Tk-5K  ≤550          ≤1650 Ω
Resistance at a temperature of Tk +5K ≥1330       ≥3990  Ω
Resistance at a temperature of Tk +15K ≥4           ≥12    KΩ
Thermal response time Td                     ≤5             ≤5    s
Insulation test voltage V                      AC2.5       AC2.5 KV
Max.operating temprature                     200           200   C
Max.storage temperature                     160            160   C
Min.srorage temperature                       -25            -25   C
Weight                                                2               3.5   g