1 Answer
The sensitivity of an MCB (Miniature Circuit Breaker) is usually defined by its trip characteristics, which are determined by its current rating and the type of MCB (Standard, Type B, C, or D).
So, if you're looking for the most sensitive MCB, Type B would be the right choice.
- Type B MCBs: These are the most sensitive. They trip when the current exceeds 3 to 5 times the rated current. This makes them suitable for circuits with resistive loads like lighting and small appliances.
- Type C MCBs: These trip when the current exceeds 5 to 10 times the rated current. They are often used in circuits with inductive loads, like motors or certain types of machines.
- Type D MCBs: These trip when the current exceeds 10 to 20 times the rated current. These are typically used in circuits where there are large inrush currents, like large motors.
So, if you're looking for the most sensitive MCB, Type B would be the right choice.