Fusible resistors, also known as fuse resistors or safety resistors, are designed to act as both a resistor and a fuse. They are constructed with a material that can withstand normal resistor operation but will burn out if a current above a certain threshold passes through them, thus providing protection to the circuit.
If you replace a fusible resistor with a normal resistor, you'll lose the fuse functionality. This means that if there's a sudden surge of current, the resistor won't burn out like a fusible resistor would, potentially leading to damage to other components or even fire hazard if the surge is severe enough.
However, if you're certain that the fusible resistor is not a critical safety component in your circuit and you're willing to accept the risk of losing the fuse functionality, you can replace it with a normal resistor with similar resistance value and power rating. Just make sure to assess the implications and risks involved in doing so for your specific application.
