The KRIWAN PTC winding sensors have been specially developed for the reliable protection of electrical machines against thermal overload. Thanks to their precise and fast response to temperature changes, they ensure that critical values in windings are recognised at an early stage and damage is avoided. The compact design enables simple integration into windings and ensures short thermal response times.
KRIWAN manufactures the PTC winding sensors fully automatically and with comprehensive test steps to ensure consistently high quality. A wide temperature range and the option of connecting sensors in series enable flexible customisation to individual requirements. We will be happy to support you in selecting the optimum winding sensor for your specific application.
Specialising in the industry, we offer pioneering technology to accurately and reliably monitor temperatures in windings. Our unique approach combines advanced PTC sensor technology with customised precision to exceed your winding temperature measurement requirements.
PTC temperature sensors according to standard DIN VDE V 0898-1-401 (formerly DIN 44081 and DIN 44082) are used to protect electrical machines against thermal overload. KRIWAN thermistors are characterised by an R/T characteristic curve that is steeper than specified in DIN. A range of types from 60 to 180°C is available. PTC temperature sensors with different nominal switch-off temperatures can also be connected in series. This makes it possible to optimally utilise and cost-effectively protect machine and winding parts with different limit temperatures.
The PTC sensor on our website is characterised by outstanding sensitivity and accuracy, which enables early detection of temperature changes in windings. Whether in power generation, electronics manufacturing or other applications, our PTC sensors not only provide accurate readings, but also set new standards in terms of durability and reliability.
Reliable protection against thermal overload and overheating
Technical properties of the PTC winding sensors
| Max. Operating voltage | 30V |
| Nominal response temperature | 60°C - 180°C |
| Tolerance of ϑNAT | ± 5K |
| Cold resistance R25 | ≤ 100Ω for single sensor | ≤ 300Ω with triplet sensor |
| Thermal response time | ≤ 5s |
| Insulation test | Ueff= 2,5kV |
Permissible ambient temperatureTA | -25…+180 °C |
| Core insulation | FEP and ETFE |
| Admission | UL (up to and including NAT 150°C) |
Please contact our specialists and we will work with you to find the right product!
Data sheet
PTC single sensor
Data sheet
PTC single sensor
Further information on our PTC individual sensors.
To the data sheet
Data sheet
PTC triplet sensor
Data sheet
PTC triplet sensor
Further information on our PTC triplet sensors.
To the data sheet100% testing - every sensor is tested
Further tests
Together we will find the right temperature sensor for your application!
