14
Lenze 13466147 EDBSM01 v19 EN
3 Installation
3.2.2 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 table 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.
•
Per UL Requirements, use a
fuse
(not a circuit breaker) for 240VAC drives requiring
>40A protection and for 480 VAC & 600 VAC drives requiring >32A protection.
Additionally, use a fuse (not a circuit breaker) for following models: SM275 and
SM 2100.
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
