Pushing the handle UP or pulling the handle DOWN on a circuit breaker operates it. Pulling the handle DOWN turns the breaker:

Pulling the handle DOWN on a circuit breaker is the action that typically turns the breaker OFF. This operation is designed for safety, as it allows users to clearly shut off the electrical flow in a circuit, preventing any accidents or hazards that could occur with an energized system.

When the breaker is in the OFF position, it effectively interrupts the electrical supply, protecting circuits from overloads or faults. This clear mechanical action is reflected in the ergonomic design of most circuit breakers, where the DOWN position is universally recognized as OFF.

Other options, such as turning the breaker ON or putting it into standby mode, are not aligned with the established operation of typical circuit breakers. These functions are instead associated with pushing the handle UP, which closes the circuit and allows current to flow. Thus, understanding the mechanics and the operation of circuit breakers ensures safe and effective use in electrical applications.