NOTICE
DISCONNECT SWITCH SCCR REQUIREMENTS
All units ordered and supplied with a factory-installed disconnect switch require Class L branch circuit fusing to meet the 100
kA SCCR for the drive.
-
If a circuit breaker is used, the SCCR rating is 42 kA. The input voltage and power rating of the drive determines the specific
Class L fuse. The input voltage and power rating are found on the product nameplate.
Table 47: Disconnect Switch SCCR Requirements
Input voltage (V) Model Short circuit rating (A) Required protection
380–480 N355–N450 42000 Circuit breaker
100000 Class L fuse, 800 A
380–480 N500–N560 42000 Circuit breaker
100000 Class L fuse, 1200 A
525–690 N450–N630 42000 Circuit breaker
100000 Class L fuse, 800 A
525–690 N710–N800 42000 Circuit breaker
100000 Class L fuse, 1200 A
Specifications
Operating Guide | VLT® Refrigeration Drive FC 103
AQ275652766279en-000101 / 130R0707| 139
Danfoss A/S © 2020.01
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