Technical Manual
FT420
– Iss 2.4
32
2.10 Fuses
The system is protected with fuses detailed on Table 21. The fuse rating for MDH controls may be
reduced to suit the application requirements.
Table 21 Fuse Specifications
Module
Designator
Specification
Usage
Main Control Board
F1
M205, 5A, fast blow or very fast blow
Main Power Input
F2
M205, 5A, fast blow or very fast blow
Battery Charger Output
F3
M205, 3A, fast blow or very fast blow
24V Power Output
F4
M205, 5A, fast blow or very fast blow
MDH Control
F5
Poly resettable, 500mA
ACF 24V Power Output
F6
Poly resettable, 1A
External Strobe 24V output
F7
Poly resettable, 2A
Warning / Speaker 24V output
B/-
7A, External Miniature Circuit Breaker Batteries Over-Current Protection
Main Display Board
F1
M205, 2A, fast blow
5V Power Input.
Four Monitored Relay
Board
F1
Poly resettable, 2A
24V Power Output
F2
Poly resettable, 2A
24V Power Output
F3
Poly resettable, 2A
24V Power Output
F4
Poly resettable, 2A
24V Power Output
OWS Plug-in Module
F1
Poly resettable, 2A
24V Power Output