As I understand it, you have single-phase input. In this case, when choosing a circuit breaker, you need to take into account several nuances.
1) What power limit is defined for your apartment - based on this limit, an automatic machine is selected. The limit is set by the supplying organization that connected you to the power grid.
2) The rated current of the meter - the machine is selected at such a rating that the meter is protected from overloads.
3) What electrical appliances will you operate at the same time - in this case, you choose a machine with a nominal value so that you can operate household electrical appliances without restrictions.
Next, the cable is selected for the selected machine. For example, a 32 A circuit breaker is a 6-square-meter copper cable. mm, 50 A - 10 kv copper cable mm
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As I understand it, you have single-phase input. In this case, when choosing a circuit breaker, you need to take into account several nuances.
1) What power limit is defined for your apartment - based on this limit, an automatic machine is selected. The limit is set by the supplying organization that connected you to the power grid.
2) The rated current of the meter - the machine is selected at such a rating that the meter is protected from overloads.
3) What electrical appliances will you operate at the same time - in this case, you choose a machine with a nominal value so that you can operate household electrical appliances without restrictions.
Next, the cable is selected for the selected machine. For example, a 32 A circuit breaker is a 6-square-meter copper cable. mm, 50 A - 10 kv copper cable mm