FT2GAS
Gaseous Extinguishing System
Rev No. 1.3
36
4.2
Appendix B – System Fuse Details
The system fuses are listed in Table 19 below.
Table 19 Fuse Specifications
Board
Designator
Circuit Protected
Specification
FT2 Control
Board
SUB922R1
F1
Main power input
M205, glass sealed, fast blow or very fast blow,
<= 5A, defined by the application.
F2
Battery power input
M205, glass sealed, fast blow or very fast blow,
<= 5A, defined by the application.
F3
Power output
M205, glass sealed, fast blow or very fast blow,
<= 5A, defined by the application.
F4
ACF
Resettable, poly fuse, 1.1A, <= 30V.
Dual zone
Control Board
SUB928R1
F1
LCS Station
Resettable, poly fuse, 0.5A, <= 30V.
F2
System inoperative
warning output
Resettable, poly fuse, 0.5A, <= 30V.
F3
Gas discharge output
M205, glass sealed, fast blow, <= 5A, defined by
the application.
F4
Alarm warning output
M205, glass sealed, fast blow or very fast below,
<= 3A, defined by the application.
LCS Circuit
Board
SUB939
NIL
NIL
Protection provided to voltage input by fuse F1
on Dual Zone Control Board SUB928R1
Warning Signs
Circuit Board
SUB937
NIL
NIL
Protection provided to voltage input by fuse F2 &
F3 on Dual Zone Control Board SUB928R1
