Ptc Resistor Temperature Limiting

April 22, 2018

Inrush current limiters 11 ptc thermistors for overcurrent protection ceramic ptc thermistors are used instead of conventional fuses to protect loads such as motors transformers etc. Dimensions inches mm are for reference only and subject to change.

Thermistors And Ntc Thermistors

How To Use Ntc Thermistors For Inrush Current Limiting

Ptc Resistor Temperature Sensors Minika Ziehl De

However a few scenarios exist that require a positive temperature coefficient ptc.

Ptc resistor temperature limiting. Suitability of this product for its intended use and any associated risks must be determined by the end customerbuyer in its final application. A ptc thermistor is a thermally sensitive resistor whose resistance increases significantly with temperature. A thermistor is a type of resistor whose resistance is dependent on temperature more so than in standard resistorsthe word is a combination of thermal and resistorthermistors are widely used as inrush current limiters temperature sensors negative temperature coefficient or ntc type typically self resetting overcurrent protectors and self regulating heating elements positive.

Area 3 block b huafeng huayuan sciencetechnology innovation park baoan district shenzhen guangdong china. The following are details of sample applications of ntc thermistors for inrush current limiting. Specifications are subject to change without notice.

They have a wide range of uses and applications. 1 at 680f 200c ambient temperature 2 switch difference 126 0f 70f 7k 4k 550w to 650w ptc fan heaters specifications heating element ptc resistor temperature limiting overheat protection built in temperature limiter axial fan ball bearing service life 50000h at 770f 250c. Ptc applications vishay bccomponents ptc thermistors how ptc thermistors protect against overloads when connected in series with the input of an electrical or electronic circuit see fig.

Ntc thermistors are the most commonly used limiter. If a system meets one of the exceptions listed below a ptc thermistor is the best choice. Characteristics of ptc thermistors switching ptc thermistors are usually made of poly crystalline ceramic materials that are highly resistive in their original state and are made semi conductive by the addition of dopants.

Sample applications of ntc thermistors for inrush current limiting. Or electronic circuits against overcurrent. Quality inrush current limiter thermistor manufacturers exporter buy high efficiency inrush current resistor ntc thermistors for inrush current limiting from china manufacturer.

1 such as a small motor or power supply the ptc thermistor acts as a non destructive fuse protecting the circuit against current voltage and temperature. In other words the effect of limiting inrush currents obtained by using an ntc thermistor is greater than that obtained by using a fixed resistor with comparable initial power losses. They not only respond to inadmissibly high currents but also if a preset temperature limit is exceeded.