11
SM01P
7.2
Input Fusing Requirements
A circuit breaker or a disconnect switch with fuses must be provided in accordance with
the National Electric Code (NEC) and all local codes . Refer to the following tables for
proper ratings:
INPUT FUSE & CIRCUIT BREAKER RATINGS
(for installation to UL and EN 60204-1)
120 Vac 1 phase
208/240 Vac 1 phase
208/240 Vac 3 phase 400/480 Vac 3 phase
SM004S
10 A
S_204S
10 A
SM005S
15 A
S_205S
10 A
SM205
10 A
SM405
10 A
S_208S
10 A
SM010S
25 A
S_210S
15 A
SM210
10 A
SM410
10 A
SM015S
35 A
S_215S
20 A
SM215
12 / 10 A
SM415
10 A
S_220S
25 / 20 A
SM220
15 / 12 A
SM420
10 A
S_230S
30 / 25 A
SM230
20 / 15 A
SM430
10 A
SM250
30 / 25 A
SM450
15 / 12 A
SM275
45 / 40 A
SM475
20 / 20 A
SM2100
50 / 50 A
SM4100
30 / 25 A
SM2150
80 / 75 A
SM4150
40 / 35 A
NOTE
•
Applicable national and local electrical codes take precedence over
recommendations in these tables .
•
Use UL Class CC fast-acting, current limiting type fuses . Select fuses with low
I
2
T values, rated at 200,000 AIC . Recommended fuses are Bussman KTK-R,
JJN, and JJS . Similar fuses with equivalent ratings by other manufacturers may
also be acceptable .
WARNING!
This product can cause a DC current in the protective conductor . Where a residual
current device (RCD) is used for protection in case of direct or indirect contact, only
an RCD of Type B is allowed on the supply side of this product . Otherwise, another
protective measure shall be applied, such as separation from the environment
by double or reinforced insulation, or isolation from the supply system by a
transformer .
Observe the following when using RCDs:
1 . Only install the RCD between the supply mains and drive controller .
2 . The RCD can be activated by:
- capacitive leakage currents between the cable screens during operation
(especially with long, screened motor cables)
- connecting several drives to the mains at the same time
- additional RFI filters
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