What is the difference between a resistor and a resistor fuse, and can a fuse resistor replace a regular resistor? 2

The primary function of a resistor fuse

The resistor fuse, also known as a fuse resistor or fuse, is designed to provide safety protection in electrical circuits. When the current in the circuit exceeds a preset value, the resistor fuse melts (opens) due to overheating, thereby cutting off the circuit and preventing equipment damage or fire caused by overcurrent.diode

The core characteristics of fuse resistors are their rapid response to overcurrent and their ability to physically isolate the circuit after melting. Their design focuses on the capability to interrupt current (rated breaking capacity) and the melting speed, rather than the precise resistance value under normal operating conditions.diode

The difference between fusible resistors and regular resistors

Although resistors and resistor fuses are similar in name, their functions are entirely different

● Purpose Differences: Resistors are used to control current, while resistor fuses are designed to cut off current when it exceeds safe limits.diode

● Functional Differences: Resistors are primarily used to limit current and distribute voltage, while resistor fuses are mainly employed for overcurrent protection.diode