Cirrus DESIGN SR20 Information Manual page 304

Section 9 Cirrus Design
Supplements SR20
ESSENTIAL 1 and ESSENTIAL 2 circuit breakers. Avionics loads on
the Non-essential Avionics Bus and Essential Avionics Bus are
protected by 15-amp AVIONICS circuit breakers connected to the
respective bus through relays energized by the AVIONICS switch.
In addition to the individual circuit breakers, 25-amp circuit breakers
located on the primary bus in the Master Control Unit (MCU) protect
the Main Bus 1, Main Bus 2, and the Non-Essential Bus. Additionally,
15-amp circuit breakers protect the landing light and standby vacuum
pump circuits. The clock is continuously powered through a 5-amp
fuse connected to the primary bus in the MCU.
10 of 10 P/N 11934-S10
Original: 09-28-99