A circuit breaker is a switching device which can make,brake and carrying (or trip the circuit) that specified over currents for a small interval of time .

There is a different types of Circuit Breaker's are there

1.According to their arc quenching media these are divided into 4 types

a) Oil circuit breaker

b) Air blast circuit breaker

c) SF6 circuit breaker

d) vacuum circuit breaker

2. According to their services the circuit breaker can be divided as

a) Outdoor Circuit Breaker

b) Indoor Breaker

3. According to the operating mechanism of circuit breaker they can be divided as

a) Spring operated Circuit Breaker

b) Pneumatic Circuit Breaker

c) Hydrolic Circuit Breaker

4. According to the voltage level of installation these are divided into 3 types

a) High Voltage Circuit Breaker

b) Medium Voltage Circuit Breaker

c) Low Voltage Circuit Breaker.

The circuit breaker for the headlights is intergrated with the headlight switch.

handling the circuit breaker

is there an error if the upstream circuit breaker is 16A TP and the downstream circuit breaker is 16A TPN?

Where I'm from, it's called a "circuit breaker".
A circuit breaker.