The fuses with fuse links are used as overload and short circuit protection in electric system of AC50Hz(or60Hz), rated voltage 500V ,rated current 63A and below.
| Type | Rated voltage | Rated cuttent | Rated breaking capacity | Rated power dissipation of fuse-link | Weight of Holder | Weight of fuse-link |
| Holder | Fuse-link | l1 kA | COSφ |
| RT18-32 | 500V | 32 | 2,4,6,8,10,12,16,20,25,32 | 63 100 | 0.1~0.2 | ≤3 | 82 | 8 |
| RT18-63 | 63 | 2,4,6,8,10,12,16,
20,25,32,40,50,63 | ≤5 | 206 | 20 |
| RT18A-32 | 32 | 2,4,6,8,10,12,16,20,25,32 | ≤3 | 82 | 8 |
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| Type | Size | L | C | Hmax |
| RT18-32 | 10×38 | 38±0.6 | 10.3±0.1 | 10.5 |
| RT18-63 | 14×51 | 51±0.6 | 14.3±0.1 | 13.8 |
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