Thermal overload relay and fuse are the most commonly used accessories in electrical materials. Many friends just think that they are two kinds of products, which have no commonalities. In fact, they are incorrect. Thermal relay and fuse have both similarities and differences. The official flagship store of Delixi will now give you an analysis.
The same points of thermal overload relay and fuse:
They all belong to current protection appliances and have inverse time limit characteristics.
Differences between the two:
Fuses are mainly used for short circuit protection and thermal relays for overload protection;
The fuse uses the thermal fusing principle, and requires the fuse to have a high fusing coefficient;
The thermal relay uses the principle of thermal expansion, requiring that the bimetallic sheet has a high expansion coefficient;
Thermal relay protection has greater delay, while short circuit protection requires that the action of fuse must be instantaneous.
To sum up, there is a big difference between the two. The specific choice depends on the use of the construction site.
