Input Fusing Requirements - Lenze SM004S Operating Instructions Manual

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:
120 Vac 1 phase
SM004S 10 A
SM005S 15 A
SM010S 25 A
SM015S 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 T values, rated at 200,000 AIC. Recommended fuses are Bussman KTK-R, JJN, and JJS.
2
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
14
Input Fuse & Circuit Breaker Ratings
(for installation to UL and EN 60204-1)
208/240 Vac 1 phase 208/240 Vac 3 phase 400/480 Vac 3 phase
S_204S 10 A
S_205S 10 A
S_208S 10 A
S_210S 15 A
S_215S 20 A
S_220S 25 / 20 A
S_230S 30 / 25 A
SM205 10 A
SM210 10 A
SM215 12 / 10 A
SM220 15 / 12 A
SM230 20 / 15 A
SM250 30 / 25 A
SM275 45 / 40 A
SM2100 50 / 50 A
SM2150 80 / 75 A
SM405 10 A
SM410 10 A
SM415 10 A
SM420 10 A
SM430 10 A
SM450 15 / 12 A
SM475 20 / 20 A
SM4100 30 / 25 A
SM4150 40 / 35 A
Lenze 13466147 EDBSM01 v19 EN