Thermistor PTC 15P for welding Machine Overload Protection

The PTC 15P Thermistor series is engineered for reliable overload protection in welding machines. This thermistor PTC automatically disconnects circuits under abnormal conditions, ensuring safety and longevity. Key models like 15P-101R offer fast reaction times and stable performance, making them ideal for critical applications. For technical details, refer to the 15P-101R datasheet and other ptc 15P datasheets. These thermistors are compact, durable, and RoHS compliant, providing consistent protection without the need for manual resets, making them a trusted choice for overload protection circuits.

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Details

Brief Introduction of Thermistor PTC 15P

Reliable Overload Protection:The PTC 15P Thermistor is specifically designed for overload protection in welding machines, protecting your equipment from damage.

Fast Reaction Time:Models like 15P-101R quickly transition to a high-resistance state to prevent overheating, ensuring the safety and longevity of your welding machines.
Durable and Stable:Engineered for long-term stability, the thermistor PTC series is durable, with no need for manual resets after overload events.
Self-Resetting Fuse:Which called "auto restore fuse" and "ten-thousand-time fuse".
Compact Design:The small size of the PTC 15P makes it easy to integrate into space-constrained circuits, without compromising performance.
Comprehensive Technical Support: Detailed technical information is available in the 15P-101R datasheet and other ptc 15p datasheets, helping you select the right thermistor for your needs.

Applications of PTC 15P Thermistor

The Thermistor PTC 15P is ideal for overload current protection circuits in welding machines. It ensures consistent performance, durability, and the ability to recover after multiple overload incidents, making it a reliable choice for maintaining the safety and longevity of welding equipment.

PTC 15P Advantages

Automatic circuit protection with steady recovery
Contactless, noiseless, and flameless operation
Fast reaction time to prevent damage
Enhanced performance in overvoltage protection
Wide operating voltage range
Small steady resistance and low rated current
Compact size for assembling easily.
Stable long-term performance
No need for reset supply after overload protection
Wide operating temperature range:
0 ~ +60°C (V=Vmax),
-25 ~ +125°C (V=0).
RoHS compliant

Key Product Features of PTC 15P Thermistor

Main PTC 15P Datasheet

Item	Model Number	Nominal Resistance	Allowable Deviation	Rated Power	Thermistor PTC Function
1	15P-101R	100Ω	±30%	0.5W	15P 101R Special for over current,overload protection of welding machines.
2	15P-390R	39Ω	±25%	0.5W
3	15P-470R	47Ω	±25%	0.5W
4	15P-500R	50Ω	±25%	0.5W
5	15P-121R	120Ω	±25%	0.5W

15P Thermistor PTC Dimensions

The PTC 15P Thermistor is compact in size, making it suitable for integration into various circuit designs, particularly in space-constrained environments like welding machines.

Details are as below:

Diagram showing the dimensions of a 15P thermistor ptc,with overload protection. The diagram shows the dimensions of the PTC 15P, including the diameter, height, and lead spacing.

Naming Convention

The naming convention of the PTC 15P series follows a systematic approach:

15P: Represents the series model.
101R, 390R, 470R, 500R, 121R: Indicates the specific nominal resistance value of each model.

Model List

15P-101R: 100Ω nominal resistance
15P-390R: 39Ω nominal resistance
15P-470R: 47Ω nominal resistance
15P-500R: 50Ω nominal resistance
15P-121R: 120Ω nominal resistance

Selection Guide

When selecting a Thermistor PTC for your welding machine, consider the following:

Ensure that the nominal resistance value and size of the PTC 15P matches your circuit requirements.
Check the overload protect capability to guarantee it meets the operating conditions of your application.
Refer to the ptc 15p datasheets for detailed technical specifications.

Working Principle

The PTC 15P Thermistor operates by maintaining a low resistance under normal conditions, allowing the circuit to function smoothly. In the event of a fault where the current exceeds the rated limit, the thermistor heats up rapidly, transitioning to a high-resistance state that disconnects the circuit. This action provides overload current protection, preventing damage. Once the fault is resolved, the thermistor PTC automatically returns to a low-resistance state, allowing the circuit to resume normal operation.

Graph showing the non-trip current versus ambient temperature for a thermistor PTC, at different temperatures. The graph also shows the tripping area, fluctuation area, and non-tripping area.

User Evaluations and Conclusion on PTC 15P Thermistor

User Evaluations

Customers consistently praise the PTC 15P Thermistor for its reliability in overload protection and its ability to recover quickly after fault conditions. Users in the welding industry highlight its effectiveness in maintaining the safety and longevity of their equipment.

Conclusion

The PTC 15P series especially 15P-101R offers a robust solution for overload current protection circuits in welding machines. With its durable design, fast reaction time, and consistent performance, this thermistor PTC series ensures reliable operation under varying conditions. For detailed information, refer to the 15P-101R datasheet and other relevant ptc 15p datasheet. Whether you need PTC thermistors for overload protection or to ensure long-term circuit stability, the PTC 15P series is a proven choice.

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