Rockwell Automation Publication 750-IN001O-EN-P - October 2014 167
Power Wiring Chapter 4
Fuse and Circuit Breaker
Ratings
The tables on the following pages provide recommended AC line input fuse and
circuit breaker information. See Fusing and Circuit Breakers on the next page for
UL and IEC requirements. Sizes listed are the recommended sizes based on 40 °C
(104 °F) and the U.S. NEC. Other country, state, or local codes can require
different ratings. DC link fuse recommendations for DC input drives are also
provided. In addition, Frame 8 and larger drives include AC line fuses (with
blown fuse indicators) to provide drive short circuit protection.
Input Device Requirements
Frames Enclosure
Catalog Code
Enclosure Type Installation Type UL Certification Required UL Certification
Not Required
1 R IP20
NEMA/UL Open Type
Installed in a non-ventilated cabinet. All devices listed on pages 169
and 173 are
acceptable.
All devices listed on pages
169 through 182 are
acceptable.
Installed outside of cabinet using NEMA
Type 1 kit or in a ventilated cabinet.
Only non-time delay fuses listed on pages 169
and 173, excluding maximum value, are
acceptable.
2…5 N IP20
NEMA/UL Open Type
Installed in a non-ventilated cabinet. Heat
sink is inside or outside of cabinet.
All devices listed on pages 169
, 173, 177, and
181 are acceptable.
FFlange
N IP20
NEMA/UL Open Type
Installed outside of cabinet using NEMA
Type 1 kit or in a ventilated cabinet.
400V AC/540V DC or 480V AC/650V DC drives:
Only non-time delay fuses listed on pages 169
and 173, excluding maximum value, are
acceptable.
600V AC/810V DC drives:
Only non-time delay fuses listed on page 177
are acceptable, with maximum value of 40A
(Frame 3), 60A (Frame 4) and 100A (Frame 5).
FFlange
G IP54
NEMA/UL Type 12
Installed inside or outside of any cabinet. All devices listed on pages 169
, 173, 177, and
181 are acceptable.
6…7 N IP00
NEMA/UL Open Type
Installed in any cabinet.
Heat sink is inside or outside of cabinet.
400V AC/540V DC or 480V AC/650V DC drives:
All devices listed on pages 169
, 173, 177, and
181 are acceptable.
600V AC/810V DC or 690V AC/932V DC drives:
Only time delay and non-time delay fuses
listed on pages 177
and 181 are acceptable.
Installed outside of cabinet using NEMA
Type 1 kit.
G IP54
NEMA/UL Type 12
Installed inside or outside of any cabinet. All devices listed on pages 169
, 173, 177, and
181 are acceptable.
8…10 B, L, P, W IP20
NEMA/UL Type 1
Installed inside of any cabinet. All devices listed on pages 171
, 175, 179 and
182 are acceptable.
J, K, Y IP54
NEMA 12
Installed inside of any cabinet. All devices listed on pages 171
, 175, 179 and
182 are acceptable.
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