Composite Fuse Resistor
Product Introduction
A composite fuse resistor is a high-performance resistive device that integrates resistance function and overload protection mechanism. It uses a composite material encapsulation and can automatically melt and break when the current exceeds the rated value, thus protecting the circuit from overload damage. This resistor not only effectively absorbs overcurrent but also cuts off the circuit in abnormal conditions, preventing electrical equipment from being damaged due to overload. It is widely used in household appliances, power systems, instruments, and other equipment, providing long-term and reliable protection for electronic systems.

Product Parameter Overview
| Item |
Parameter Overview |
| Product Type |
Composite Fuse Resistor |
| Lightning resistance |
IEC 61000-4-5 |
| Painting |
Use light gray non-flammable paint (resistant to 800℃) or silicone resin coating. |
| Nominal Temperature |
221°C |
| Material |
Heat-resistant ceramic rod, tinned copper wire |
| Short Time Overload |
16 times of rated wattage for 5 seconds ( ±2% ) |
| Tensile strength |
1 kg |
Performance Characteristics
- High Heat Resistance and Overload Protection
The composite fuse resistor uses high-temperature heat-resistant materials, enabling stable operation in high-temperature environments and effectively withstanding instantaneous overloads, protecting the circuit from damage.
- Precise Current Protection
This resistor can quickly cut off the circuit when the current exceeds the rated value, preventing electrical system failure due to overload and ensuring safe equipment operation.
- Low Temperature Drift and Stability
The composite resistor has a low temperature coefficient, maintaining a stable resistance value under different environmental conditions, ensuring high reliability during long-term use.
- Enhanced Safety Design
Utilizing a non-flammable coating and high-temperature resistant materials, it effectively prevents fires or other safety hazards caused by overheating or short circuits.

Application Areas
- Home Appliances and Consumer Electronics
Composite fusible resistors are widely used in various home appliances and consumer electronic devices, including electric fans, air conditioners, and refrigerators. They effectively protect appliances from damage caused by current overload or short circuits, extending their service life.
- Power Management Systems
In power management systems, composite fusible resistors are used for overcurrent protection, ensuring stable operation of power modules and preventing circuit damage due to sudden current surges.
- Instrumentation and Communication Equipment
In precision instruments and communication equipment, composite fusible resistors ensure stable operation in harsh environments, preventing system failures or damage due to overcurrent or short circuits.
- Power Tools and High-Precision Equipment
Used in high-precision equipment such as power tools, battery management systems (BMS), and chargers, providing reliable overload protection and ensuring the safe operation of circuits and equipment.