Screw Fuse Base
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Applications
- Supporters for D01-D03, DII~DIII fuses of all application kinds (gG, aM, aR) in electric lines (type gG) are capable of working under the heat caused by rated current and prospective short-circuit impacting current up to 50KA.
- Rated insulate voltage up to 1140V; Working frequency 50HzAC; Rated current 200A. Compliant with GB13539.1, GB13539.3, GB13539.5 and IEC 269-1, IEC269-3.
Design Features
- This series of fuses bases are made up of fuse carrier and supporter. Insert the fuse into the carrier, which will be screwed into the supporter to form a complete screw fuse unit. There is a transparent glass window on the top of the fuse carrier, through which the status of the fuse can be easily observed. It can be screw installed or rail installed. (Figures 1~13).
Models | Fuse Link | Rated insulation voltage (V) | Conventionalfree air thermalcurrent(A) | Dimensions/ Sizes(mm) | Weight (g) | |||||||||
Size | Models | Fig. | A1 | A2 | B1 | B2 | B3 | H | ΦD | Φd | ||||
RO(FB)21 | DII | RL6-25 | 500 | 25 | Figure 1 | 27 | 45 | 30 | 45 | 68 | 72 | 38.5 | 5x6 | 159 |
RO(FB)22 | DIII | RL6-63 | 500 | 63 | 38 | 53 | 33 | 54 | 85 | 80 | 48 | 5x6 | 265 | |
FB24 | - | RO(S)24 | 660 | 25 | 25 | 35 | 22 | 33 | 56 | 68 | 30 | 4x6 | 118 |
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
Models | Fuse Link | Rated insulation voltage (V) | Conventionalfree air thermalcurrent(A) | Dimensions/ Sizes(mm) | Weight (g) | ||||||||
Size | Models | Fig. | A1 | A2 | B1 | B2 | H | ΦD | Φd | ||||
RO(FB)21-3J | DII | RO21 | 500 | 25 | Figure 2 | 37 | 90 | 42 | 77 | 79 | 38 | 5x7 | 604 |
RO(FB)22-3J | DIII | RO22 | 500 | 63 | 37 | 110 | 48 | 95 | 80 | 48 | 6x10 | 860 |
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
Models | Fuse Link | Rated insulation voltage (V) | Conventionalfree air thermalcurrent(A) | Dimensions/ Sizes(mm) | Weight (g) | |||||||||
Size | Models | Fig. | A1 | A2 | B1 | B2 | C | H | ΦD | Φd | ||||
RL1-15 | - | RL1-15 | 380 | 15 | Figure 3 | 24 | 35 | 28 | 41 | 64 | 60 | 33 | 5 | 116 |
RL1-60 | - | RL1-60 | 380 | 60 | 34 | 55 | 41 | 55 | 78 | 70 | 48 | 6 | 243 | |
RL1-100 | - | RL1-100 | 380 | 100 | 45 | 83 | 53 | 83 | 120 | 100 | 70 | 8 | 798 | |
RL1-200 | - | RL1-200 | 380 | 200 | 63 | 87 | 64 | 87 | 152 | 110 | 85 | 10 | 1460 |
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
Models | Fuse Link | Rated insulation voltage (V) | Conventionalfree air thermalcurrent(A) | Dimensions/ Sizes(mm) | Weight (g) | |
Size | Models | Fig. | ||||
FB26A-63 | - | RO26 | 500 | 63 | Figure 4 | 63 |
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
Models | Fuse Link | Rated insulation voltage (V) | Conventionalfree air thermalcurrent(A) | Dimensions/ Sizes(mm) | Weight (g) | |
Size | Models | Fig. | ||||
FB26B-63 | - | RO26 | 500 | 63 | Figure 5 | 80 |
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
Models | Fuse Link | Rated insulation voltage (V) | Conventionalfree air thermalcurrent(A) | Dimensions/ Sizes(mm) | Weight (g) | |
Size | Models | Fig. | ||||
FB26C-63 | - | RO26 | 500 | 63 | Figure 6 | 74 |
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
Models | Fuse Link | Rated insulation voltage (V) | Conventionalfree air thermalcurrent(A) | Dimensions/ Sizes(mm) | Weight (g) | |
Size | Models | Fig. | ||||
FB26A-100 | - | RO26 | 500 | 100 | Figure 7 | 194 |
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
Models | Fuse Link | Rated insulation voltage (V) | Conventionalfree air thermalcurrent(A) | Dimensions/ Sizes(mm) | Weight (g) | |
Size | Models | Fig. | ||||
FB26B-100 | - | RO26 | 500 | 100 | Figure 8 | 228 |
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
Models | Fuse Link | Rated insulation voltage (V) | Conventionalfree air thermalcurrent(A) | Dimensions/ Sizes(mm) | Weight (g) | |
Size | Models | Fig. | ||||
FB26C-100 | - | RO26 | 500 | 100 | Figure 9 | 226 |
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
Models | Fuse Link | Rated insulation voltage (V) | Conventionalfree air thermalcurrent(A) | Dimensions/ Sizes(mm) | Weight (g) | ||||||||
Size | Models | Fig. | A1 | A2 | B1 | B2 | H | ΦD | Φd | ||||
FB26-16 | D01 | RL8B | 500 | 16 | Figure 10 | - | 18 | - | 55 | 59 | 17 | - | 83 |
FB26-63 | D02 | RL8B | 500 | 63 | 20 | 27 | 54 | 77 | 72 | 26 | 5 | 86 |
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
Models | Fuse Link | Rated insulation voltage (V) | Conventionalfree air thermalcurrent(A) | Dimensions/ Sizes(mm) | Weight (g) | |
Size | Models | Fig. | ||||
FB26-16-3J | D01 | RL8B | 500 | 16 | Figure 11 | 286 |
FB26-63-3J | D02- | RL8B | 500 | 63 | 295 |
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
Models | Fuse Link | Rated insulation voltage (V) | Conventionalfree air thermalcurrent(A) | Dimensions/ Sizes(mm) | Weight (g) | |
Size | Models | Fig. | ||||
FB26D-63 | D02 | RO26 | 500 | 63 | Figure 12 | 114 |
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
Models | Fuse Link | Rated insulation voltage (V) | Conventionalfree air thermalcurrent(A) | Dimensions/ Sizes(mm) | Weight (g) | |
Size | Models | Fig. | ||||
RL5 | - | - | 1140 | 25 | Figure 13 | 260 |
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