12x63a breaker

A 12x63A breaker!

Here's what that means:

• "12" refers to the number of poles on the breaker. A pole is a single circuit that can be controlled by the breaker. In this case, the breaker has 12 poles, which means it can control 12 separate circuits.
• "63A" refers to the amperage rating of each pole. "A" stands for amperes, which is a unit of electrical current. In this case, each pole of the breaker is rated for 63 amperes. This means that each circuit controlled by the breaker can handle a maximum current of 63 amperes without tripping the breaker.

So, in summary, a 12x63A breaker is a 12-pole breaker with a 63-ampere rating per pole. It's designed to handle a total of 12 x 63 = 756 amperes of current.