Fuse Selection According to Rated Current in Three Phase Motors

Fuses
FUSE SELECTION ACCORDING TO RATED CURRENT IN THREE PHASE MOTORS
Selection of the smallest delayed fuse bushing according to the connection type.
In direct starting: Starting current 6.ln≤5 sec.
In star delta starting: Starting current 2.ln≤15 sec.
Motor
Rated
Power		 CosØ Yield 220 V 500 V 380 V Connection
Cable
NYY
NYCY
mm2
Motor
Rated
Current		 Fuse Motor
Rated
Current		 Fuse Motor
Rated
Current		 Fuse
Direct Y/∆ Direct Y/∆ Direct Y/∆
kW PS A A A A A A A A A
0.25 0.34 0.7 62 1.4 4 2 0.6 2 2 0.8 2 2 4×2.5
0.37 0.5 0.72 64 2.1 4 2 0.9 2 2 1.6 4 2 4×2.5
0.55 0.75 0.75 69 2.7 4 4 1.2 4 4 1.6 4 2 4×2.5
0.75 1 0.8 74 5.4 6 1 1.5 4 4 2 4 4 4×2.5
1.1 1.5 0.8 77 4.4 6 6 2 4 4 2.6 4 4 4×25
1.5 2 0.83 78 6 16 10 2.6 4 4 3.5 6 6 4×2.5
2.2 3 0.84 81 8.7 20 16 3.7 10 6 5 10 6 4×25
3 4 0.84 81 11.5 20 16 5 10 10 6.6 16 10 4×2.5
4 5.4 0.84 82 14.7 25 20 6.4 16 10 8.5 20 16 4×2.5
5.5 7.5 0.85 83 19.8 35 25 8.5 20 16 11.5 25 20 4×2.5
7.5 10 0.86 85 26.5 50 35 11.5 25 20 15.5 35 25 4×4
11 15 0.86 87 39 63 50 17 35 25 22.5 35 35 4×6
15 20 0.86 87 52 50 63 22.5 35 35 30 50 35 4×6
18.5 25 0.86 88 62 100 80 27 50 35 36 63 50 4×10
22 30 0.87 89 74 100 80 32 63 50 43 63 50 4×10
30 40 0.87 90 98 125 100 43 63 50 57 80 63 4×16
37 50 0.87 90 124 200 160 54 80 63 72 100 80 3×25+16
45 61 0.88 91 147 225 200 64 100 80 85 125 100 3×35+16
55 75 0.88 91 180 250 225 78 125 100 104 60 125 3×50+25
75 100 0.88 91 246 350 250 108 160 125 142 200 160 3×70+35
90 123 0.88 92 – – – 127 200 160 169 225 200 3×95+50
110 150 0.88 92 – – – 154 225 200 204 250 225 3×120+70
132 180 0.88 92 92 – – – 182 250 225 243 300 250 3×120+70

Yunus

Select your currency
USDUnited States (US) dollar
EUR Euro
GBP Pound sterling
TRY Turkish lira