interruptor

noun
  1. A device or mechanism that interrupts an electrical circuit, typically used to stop the flow of electricity. noun
    The electrician installed an interruptor to ensure the circuit could be safely deactivated.
    In case of an overload, the interruptor will automatically shut off the power to prevent damage.
  2. A person or thing that interrupts or causes a disruption in a process or activity. noun
    The constant noise from the construction site was a major interruptor during our meeting.
    As an interruptor, his frequent questions often derailed the flow of the lecture.