Supervised Alarm / Relay / Power Expansion Unit 20
Figure 14 - Fuse Holder
Figure 13 - Expansion Unit Primary Fuse Location
Expansion Unit Primary Fuse - 120VAC Instal-
lations (USA/Canada)
A 1 ampere (1.00A) 5x20mm slow-blow, UL ap-
proved fuse protects the Expansion Unit primary
circuit. The fuse is located on the service entrance
terminal block on the bottom of the Expansion
Unit . (see Figure 13). The fuse holder is
“shocksafe,” and may be carefully removed while the unit is
powered.
1. Find the service entrance terminal block near the bottom
middle of the enclosure.
2. Grasp the black fuse holder and pull straight out.
3. Replace the fuse with a 1-ampere (1.00A) 5x20mm slow-
blow, UL approved fuse.
4. Re-install the fuse holder with the new fuse.
Expansion Unit Primary Fuse - 230VAC Instal-
lations (European Union)
A 1/2 ampere (0.500A) time delay fuse meeting
IEC standards protects the Expansion Unit primary
circuit. The fuse is located on the service entrance
terminal block on the bottom of the Expansion
Unit. (see Figure 13). The Fuse Holder is
“shocksafe,” and may be carefully removed while the unit is
powered.
1. Find the service entrance terminal block near the bottom
middle of the enclosure.
2. Grasp the black fuse holder and pull straight out.
3. Replace the fuse with a 1/2-ampere (0.500A) 5x20mm
time-lag, IEC127 approval fuse.
4. Re-install the fuse holder with the new fuse.
CIRCUIT PROTECTION
Fuse Holder
Service Entrance
Terminal Block
