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Fuse Selection According to Rated Current in Three Phase Motors
| 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 |
