Honeywell
CD3000M-2PH from 125A to 700A
User’s Manual
8. Fuses and fuseholder
8.1 Fuses and Fuse Code
CD3000M unit must be protected by fuses against short circuit selecting the proper I²t that must
be lower than thyristor one. The same caution must be taken if Circuit Breaker is used. Remember
that is very difficult to protect the thyristor if this choice is done.
WARNING!! Equipment short circuit protected by Semiconductor Fuse type
with proper I
2
t
Bussmann Div - Cooper (UK) Ltd
(200 kA
RMS
Symmetrical A.I.C.)
Ferraz Shawmut SA
(200 kA
RMS
Symmetrical A.I.C.)
Sizes
Fuse Mod. No.
/modéle fusible
Current
(A
RMS
)
I
2
t
(A
2
sec)
V ac
Fuse Mod. No.
/modéle fusible
Current
(A
RMS
)
I
2
t
(A
2
sec)
Vac
125A 200
FEE 200 11400
660
6,6 URY 000
BS88 200
200 16000
660
400A 550
FMM 550
215000
660
6,6 URZ 2X000
BS88 Z 550
550 208000 660
450A
2x 315 FM
315
77000
660 2 x 6,6 URB 000
BS88 315
315 82000
660
500A
2x 315 FM
315
77000
660 2 x 6,6 URB 000
BS88 315
315 82000
660
600A
2x 450 FMM
450
105000
660
2x 6,6 URZ
2X000 BS88 450
450 126000 660
700A
2x 450 FMM
450
105000
660
2x 6,6 URZ
2X000 BS88 450
450 126000 660
SIBA (300kA @ 600V, 200kA @700V)
FERRAZ (200kA @ 660V)
150A
20 559 20
250
44000
660
6,6 URB 000
BS88/250
250 52000
660
200A
20 559 20
315
77000
660
6,6 URB 000
BS88/315
315 82000
660
275A
20 559 20
315
77000
660
6,6 URB 000
BS88/315
315 82000
660
High speed fuses are only used for the thyristor protection and can not be used to
protect the installation.
The user installation must be protect by electromagnetic circuit breaker or by fuse
isolator.
The warranty of thyristor is null if no proper fuses are used. See tab above.
www.honeywell.com/imc 30
