40
AC-side overcur-
rent protection
Maximium Values for AC overcurrent protection
Additional exter-
nal AC and/or DC
disconnect
Depending on the installation, an additional external AC and/or DC disconnect may be re-
quired if the inverter is installed in a location not easily accessible to utility or fire personnel.
Contact your local authorities for additional information.
CAUTION! Risk of fire due to inadequately sized AC protection.
To reduce the risk of fire:
- connect only to a circuit provided with branch circuit overcurrent protection in
accordance with the National Electrical Code, ANSI / NFPA 70;
- comply to the maximum values for the overcurrent protection according the
following table.
Fronius IG Plus Overcurrent protection
208 V 240 V 277 V
3.0-1 20 A 20 A 15 A
3.8-1 25 A 20 A 20 A
5.0-1 30 A 30 A 25 A
6.0-1 40 A 35 A 30 A
7.5-1 45 A 40 A 35 A
10.0-1 60 A 60 A 45 A
10.0-3 40 A 35 A -
11.4-1 70 A 60 A 60 A
11.4-3 40 A 35 A -
12.0-3 - - 20 A
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