Usually a 15 or 20 amp breaker is sufficient
The purpose of a Gould breaker in an electrical circuit is to protect the circuit from overloads and short circuits by interrupting the flow of electricity when necessary.
A circuit breaker is supposed to protect the more valuable component the circuit is connected to. Too low a resistance, a minor glitch (spike) will break the circuit and stop the device from working. Too high a resistance, no glitches, no matter how large (a child sticking a paper clip into the wall sockets, for example), will break the circuit and the device (child) may get damaged. Each circuit will have a purpose (power load), and the circuit breaker should be chosen for that purpose with some tolerance. A free standing closed circuit breaker should have no resistance across its internal contacts. The main purpose of a circuit breaker is to protect the conductors that supply the load. If the current going to the load becomes greater that the amperage rating of the wire the circuit will open thereby saving the conductors from damage. Once the load current is below the wire rating ampacity, the breaker can be reset for normal operation.
... fuse.
The purpose of a circuit breaker is to protect an electrical circuit from damage caused by excess current. When the current exceeds a safe level, the circuit breaker trips and interrupts the flow of electricity to prevent overheating and potential fire hazards.
A circuit breaker is designed so that it will trip when the electric current is too high. That is the purpose of a circuit breaker. If there is a metal piece on the circuit breaker that prevents it from tripping, it is useless. Perhaps someone has altered it.
There are various to check if your air circuit breaker working. You can use various tools that are available to test your air circuit breaker. A clamping ammeter is ideal for this purpose.
The purpose of a 50 amp 2 pole breaker in an electrical circuit is to protect the circuit from overloading by disconnecting the power when the current exceeds 50 amps.
The biggest circuit breaker in any home is the main breaker located in your main breaker panel that is installed where your electrical service cable comes into your home.
The purpose of a 30 amp double pole breaker in an electrical circuit is to protect the circuit from overloading by shutting off the power if the current exceeds 30 amps.
The purpose of a 50 amp single pole breaker in an electrical circuit is to protect the circuit from overloading by interrupting the flow of electricity if the current exceeds 50 amps.
The purpose of a 2 pole 20 amp breaker in an electrical circuit is to protect the circuit from overloading and overheating by interrupting the flow of electricity when the current exceeds 20 amps.
The purpose of a 2 pole 50 amp breaker in an electrical circuit is to protect the circuit from overloading and overheating by interrupting the flow of electricity when the current exceeds 50 amps.