196 Rockwell Automation Publication 750-IN001P-EN-P - April 2017
Chapter 4 Power Wiring
Input Contactor Precautions
(1) These circuit breakers are considered branch circuit protection for the unit if the tap is within 10 ft. of the breaker input.
(2) These devices are 21G, SCCR ratings with no additional protection provided. Branch circuit protection (fuse) is required based on NEC guidelines for options with P5.
Table 30 - Short Circuit Current Ratings – 690V AC Input
Drive Catalog
Number
Duty
Cycle
kW Short Circuit Current Rating (kA)
Circuit Breaker
Only (P3)
Circuit Breaker with Input Contactor
(P3 with P11)
Molded Case Switch Only
(P5)
Molded Case Switch with Input
Contactor
(P5 with P11)
21G…F265 LD 315 30 SCCR rating for 690V input contactor not
available at time of publication.
25 SCCR rating for 690V input contactor not
available at time of publication.
ND 250 30 25
HD 200 30 25
21G…F330 LD 355 30 25
ND 315 30 25
HD 250 30 25
21G…F370 LD 400 30 25
ND 355 30 25
HD 300 30 25
21G…F415 LD 450 30 25
ND 400 30 25
HD 355 30 25
21G…F460 LD 500 25 25
ND 450 30 25
HD 375 30 25
21G…F500 LD 530 25 25
ND 500 25 25
HD 400 30 25
21G…F590 LD 630 35
These options are not used with these drive ratings.
ND 560 35
HD 450 35
21G…F650 LD 710 35
ND 630 35
HD 500 35
21G…F710 LD 800 35
ND 710 35
HD 560 35
21G…F765 LD 850 35
ND 750 35
HD 630 35
21G…F795 LD 900 35
ND 800 35
HD 710 35
21G…F960 LD 1000 35
ND 900 35
HD 800 35
ATTENTION: A contactor or other device that routinely disconnects and
reapplies the AC line to the drive to start and stop the motor can damage the
drive hardware. The drive is designed to use control input signals that start
and stop the motor. If an input device is used, operation must not exceed 1
cycle per minute or drive damage can occur.
ATTENTION: The drive start/stop/enable control circuitry includes solid-
state components. If hazards due to accidental contact with moving
machinery or unintentional flow of liquid, gas or solids exist, an additional
hardwired stop circuit can be required to remove the AC line to the drive. An
auxiliary braking method can be required.
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