© 2018 MacroAir Technologies Toll Free: 866 668 3247 Fax: 909 890 2313 www.macroairfans.com 5
Rev. Date 040218
Fusing Chart
BRANCH CIRCUIT PROTECTION IS REQUIRED TO PROTECT THE ELECTRICAL COMPONENTS
AND COMPLY WITH UL 507.
Use the table below to select the correct fast acting fuse size for your application. The optional
fuse disconnect switch provided by MacroAir uses class gG fast acting fuses. Fuses must be
purchased separately.
MODEL 550
Max Amp Draw / Fuse Size
Voltage and Phase 8ft 10ft 12ft 14ft 16ft 18ft
110 VAC 1-Phase 9A / 12 13.9A / 20 13.9A / 20 13.9A / 20 15.2A / 20 15.2A / 20
120 VAC 1-Phase 8.3A / 12 12.7A / 16 12.7A / 16 12.7A / 16 14A / 20 14A / 20
208-240 VAC 1-Phase 4.8A / 6 7.3A / 10 7.3A / 10 7.3A / 10 8.1A / 12 8.1A / 12
208-240 VAC 3-Phase 3.4A / 6 5.3A /8 5.3A / 8 5.3A / 8 6.6A / 10 5.8A / 8
380 VAC 3-Phase 1.9A / 4 2.9A / 4 2.9A / 4 2.9A / 4 3.6A / 6 3.2A / 4
480 VAC 3-Phase 1.5A / 4 2.3A / 4 2.3A / 4 2.3A / 4 2.9A / 4 2.5A / 4
600 VAC 3-Phase 1.2A / 4 1.8A / 4 1.8A / 4 1.8A / 4 2.3A / 4 2A / 4
MODEL 780
Voltage and Phase 20ft 24ft
208-240 VAC 1-Phase 12.5A / 16 15.1A / 20
208-240 VAC 3-Phase 6.8A / 10 8.2A / 12
380 VAC 3-Phase 3.7A / 6 4.5A / 6
480 VAC 3-Phase 2.9A / 4 3.5A / 6
600 VAC 3-Phase 2.3A / 4 2.8A / 4
Reference page 57 for installation.
Part Numbers:
4A 6A 8A 10A 12A 16A 20A
MERSEN
FUSES
FR10GG50V4 FR10GG50V6 FR10GG50V8 FR10GG50V10 FR10GG50V12 FR10GG50V16 FR10GG50V20
EATON
FUSES
C10G4 C10G6 C10G8 C10G10 C10G12 C10G16 C10G20
DF
FUSES
420004 420006 420008 4200010 4200012 4200016 4200020
Mersen fuses:
http://ep-us.mersen.com/products/catalog/line/ferrule-fuse-links-10x38-gg-400-to-690vac/
Eaton Fuses:
http://www.cooperindustries.com/content/public/en/bussmann/electrical/products/iec_british0/class_gg_gl_
ferrulefuses/class_gg_gl_ferrulefuses10x38mm.resources.html
DF Fuses:
http://www.df-sa.es/products/cylindrical/gg-fuse-links
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