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High Voltage Fuse

XRNT1 series high voltage fuse is suitable for the indoor electrical power system with the AC 50Hz and rated voltage of 7.2kV-40.5kV. This electrical protective component is used in the transformer and other electrical equipment to prevent overload, short circuit or other electrical problems. It is also compatible with other protective electric appliances, such as load switch and vacuum contactor.

Model
Model for inland users Model for overseas users

1. Rated breaking current KA
2. Rated current A
3. C: plu
g-in type M: bus type
4. Rated voltage KV
5. Serial number
6. Transformer protection
7. Indoor
8. Fuse
9. Current limit

10. Rated breaking current KA
11. Rated current A
12. Rated voltage KV
13. DIN standard, plug-in type
14. D= spring–loaded striker; N=no striker; A=firing pin
15. Length of fuse: O=192mm, l=292mm, M=442mm, Q=537mm
16. Diameter of fuse: D=51mmF/K (high-strength porcelain) = Φ 76mm, Φ 89mm
17. Transformer protection

Basic Parameters
Model for inland users Model for overseas users Rated voltage (kV) Fuse rated current (A) Dimensions mm ( ￠ ) (D×L) Breaking current (kA)
XRNT1-7.2 SDLDJ 7.2 3.15, 4, 5, 6.3, 10, 16, 20, 25, 31.5, 40, 50, 63 ￠ 51×292 50
SDLDJ 71. 80, 100, 125, 160, 16 ￠ 76×292
SDLDJ 200, 224, 250 ￠ 88×292
XRNT1-7.2 with spring-loaded striker, bus type 7.2 31.5 ￠ 125×292 50
355, 400, 500, 560 ￠ 125×442
XRNT1-12 SDLDJ 12 2, 3.15, 6.3, 10, 16, 20, 25, 31.5, 40, 50 ￠ 51×292 50
SDLDJ 50, 63, 71, 80 ￠ 66×292
SDLDJ 100, 125 ￠ 76×292
SDLDJ 160, 200 ￠ 88×292
SDLDJ 224, 250 ￠ 88×442
315, 355 ￠ 125×442
XRNT1-24 SDLDJ 24 6.3, 10, 16, 20, 25, 31.5 ￠ 51×442 50
SDLDJ 40, 50, 63, 71, 80 ￠ 76×442
SDLDJ 100, 125 ￠ 88×442 40
SDLDJ 160, 200 ￠ 88×537 31.5
SDLDJ 160, 200 ￠ 125×442
XRNT1-40.5 40.5 2, 31.5, 6.3 ￠ 45×465 31.5
SDQDJ 2, 31.5, 4, 5, 6.3, 10, 16 ￠ 51×537
SDQDJ 20, 25, 31.5, 40 ￠ 76×537
SXMDJ 20, 25, 31.5, 40 ￠ 88×442
SXQDJ 45, 50, 56, 63 ￠ 88×537
71, 80, 100 ￠ 88×650
XRNT1-40.5 with spring-loaded striker, plug-in type 40.5 80, 100, 125, 160 ￠ 125×567 31.5
200 ￠ 125×650
Dimensions and Installation Dimensions
①Length after fusing
Specifications L A B C D H G F ￠ d
XRNT1-7.2 292 450 322 150 454 160 483 203 ￠ 13
XRNT1-12 292 450 322 150 454 160 483 203 ￠ 13
XRNT1-12 442 600 472 270 604 160 633 203 ￠ 13
XRNT1-24 442 600 472 270 604 285 633 350 ￠ 13
XRNT1-40.5 537 700 567 300 700 410 729 443 ￠ 13
XRNT1-40.5 650 800 680 400 808 410 837 443 ￠ 17
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