A circuit interrupter with end-of-life protection has four components: 1)
a control circuit to activate an electromagnetic unit upon detecting a
predetermined condition; 2) a fuse coupled between the control circuit
and the power supply; 3) an end life sensing circuit coupled to the
control circuit; and 4) an end life indicating circuit coupled to the end
life sensing circuit and the power supply. The end life sensing circuit
includes a light emitting device and a light sensitive device controlled
by the light emitting device. The end life indicating circuit includes a
visual indicator to indicate that the circuit interrupter reaches the end
of its life. Another circuit interrupter with end-of-life protection has
three components: 1) a control circuit to activate an electromagnetic
unit upon detecting a predetermined condition; 2) a fuse coupled between
the control circuit and the power supply; and 3) an end life sensing and
indicating circuit coupled to the control circuit. The end life sensing
and indicating circuit includes a light emitting device which is turned
off to indicate that the circuit interrupter reached the end of its life.