are set for 3¾-amp trip current. This is a good compromise
for use with a 5-amp system. Remember, unlike the circuit
protection bulbs, when the circuit breaker trips, it removes
all the load. That way, the full power of the system is avail
able for the remaining (functional) districts.
Auto-Reverser technology
The heart of a circuit breaker is exactly what is needed for an
auto-reverse module, the ability to detect a short.
The PSxAR is an example of sophisticated design technology. It
combines an auto-reverser and a PSx series circuit breaker into
one board. When a short is detected, first the module will flip
the polarity. If the short persists, then the module will shut off
the power.
