4 selecting input line branch circuit protection – Rockwell Automation SP600 AC Drive User Manual Version 1.0 User Manual
Page 63
 
Wiring Requirements for the Drive
4-9
4.4
Selecting Input Line Branch Circuit 
Protection
Input line branch circuit protection fuses or circuit breakers must be 
used to protect the input power lines. Tables 4.5, 4.6, and 4.7 
provide recommended AC line input fuse and circuit breaker 
information. Both types of short circuit protection are acceptable for 
UL and IEC requirements. The input fuse or circuit breaker ratings 
listed in the tables are applicable for one drive per branch circuit. No 
other load may be applied to that circuit. Sizes listed are the 
recommended sizes based on 40° C and the U.S. N.E.C. Other 
country, state or local codes may require different ratings. 
Fusing
If fuses are chosen as the desired protection method, refer to the 
recommended types listed below. If available amp ratings do not 
match the tables provided, the closest fuse rating that exceeds the 
drive rating should be chosen.
•
IEC – BS88 (British Standard) Parts 1 & 2
1
, EN60269-1, Parts 1
& 2, type gG or equivalent should be used.
•
UL – UL Class CC, T or J must be used.
2
Circuit Breakers
The circuit breakers listed in tables 4.5 through 4.7 are for inverse 
time circuit breakers.
!
ATTENTION: Most codes require that upstream branch 
circuit protection be provided to protect input power wiring. 
Install the fuses or circuit breakers recommended in tables 4.5 
through 4.7. Do not exceed the fuse or circuit breaker ratings. 
Failure to observe this precaution could result in a dangerous 
condition and/or damage to equipment.
1
Typical designations include, but may not be limited to the following: Parts 
1 & 2: AC, AD, BC, BD, CD, DD, ED, EFS, EF, FF, FG, GF, GG, GH.
2
Typical designations include:Type CC - KTK-R, FNQ-R; 
Type J - JKS, LPJ; Type T - JJS, JJN