Fast Acting Current-Limiting Fuses; Recommended Fuses - Rockwell Automation SMC Dialog Plus User Manual

2-10 Installation
Fast Acting
Current-limiting
Fuses
SMC
Rating
24A
35A
54A
97A
135A
180A
240A
360A
500A
650A
720A
850A
1000A
Short-circuit protection guidelines are provided in Appendix A of this
manual. Enhanced SCR protection may be obtained with the use of
fast acting current-limiting fuses. Table 2.C provides a listing of
fuses that are coordinated to protect the controller SCRs in the event
of a ground fault or short-circuit at the connected load. If SCR fusing
is not used, the controller power modules may be damaged and
require replacement. Supplementary SCR fusing, however, is not
required by the NFPA 70 (National Electric Code).
Table 2.C
Bussman
SPP-4F60
170M 3610-63
SPP-4F100
170M 3612-100
SPP-4F150
170M 3614-160
SPP-4F300
170M 3617-315
SPP-4F300
170M 3617-315
SPP-4F400
170M 3619-400
SPP-6F400
170M 5608-400
SPP-6F600
170M 5612-630
SPP-6F800
170M 6613-900
SPP-6F800
170M 6613-900
②
SPP-5F600
②
170M 5612-630
SPP-7F1200
A70P1000
170M 6615-1100
②
SPP-6F800
A70P1000
②
170M 6613-900
Note: Fuse size listed is for 230V, 460V, or 575V.
①
Fuse manufacturer's cross reference of the fuse Cat. Nos. listed here may not provide proper
coordination.
②
Two fuses per phase are required for these controller ratings.
!
!

Recommended Fuses

Fuse Manufacturer Cat. No.
Shawmut Edison (Brush)
A70P70 XL70F080
A70P100 XL70F125
A70P200 XL70F200
A70P300 XL70F300
A70P300 XL70F300
A70P400 XL70F400
A70P500 XL70F500
A70P800 XL70F600
A70P1000 XL70F500
A70P1000 XL70F500
A70P1200 XL70F600
②
—
②
—
ATTENTION: The fast acting current-limiting fuses
specified in Table 2.C may not provide branch circuit
protection. Branch circuit protection in accordance
with applicable electrical codes may require additional
fusing (or a circuit breaker) even though fast acting
current-limiting fuses are used.
ATTENTION: Applications requiring extended
acceleration times or high duty cycles may experience
nuisance tripping of the coordinated fast acting current-
limiting fuses. This type of fuse has a limited thermal
capacity that is less than that of the SCRs they are
designed to protect. This makes them susceptible to
thermal fatigue.
①
Ferraz
A070F060
A070F100
A070F150
A070F300
A070F300
A070F400
A070F400
A070F800
②
A070F800
②
A070F800
②
A070F800
A070F1200
A070F1200
Littlefuse
L70S60
L70S100
L70S150
L70S300
L70S300
L70S400
L70S400
L70S600
L70S800
L70S500
L70S500
L70S800
L70S800