Lenze TCF Series - Manual (Page 16)

7 .2 INPUT FUSING & DISCONNECT 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
fuse/circuit breaker ratings and wire sizes .
INPUT FUSE & CIRCUIT BREAKER RATINGS
208/240 Vac, 1 phase 208/240 Vac, 3 phase 400/480 Vac, 3 phase 480/590 Vac, 3 phase
MODEL RATING MODEL RATING MODEL RATING MODEL RATING
TF205Y 10 A TF205Y 10 A TF405 10 A
TF210Y 15 A TF210(Y) 10 A TF410 10 A TF510 10 A
TF215Y 20 A TF215(Y) 12 / 10 A TF415 10 A
TF220Y 25 / 20 A TF220(Y) 15 / 12 A TF420 10 A TF520 10 A
TF230Y 30 / 25 A TF230(Y) 20 / 15 A TF430 10 A TF530 10 A
TF250 30 / 25 A TF450 15 A TF550 12 A
TF275 45 / 40 A TF475 20 A TF575 20 A
TF2100 50 / 50 A TF4100 30 / 25 A TF5100 20 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 I2T 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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