Product Description
The Current limited Back Fuse (Cl fuse)is used in transformers to protect and isolate faulted equipment. Whenconnected in series with a low current primary protection device, such as Bay-0-Net fuse link, the Cl fuse becomesan element of a two part protection system that gives a full range of fault protection.This two-part system provides low current protection with the replaceable expulsion fuse . Together,the Cl fusecoordinate easily with upstream and downstream devices.
This product applies to indoor AC 50~60Hz system with the rated voltage of 8.3 ~ 40.5kV for the short-circuit protection of transformer and other power equipment, and is used in series with the oil-immersed transformer overload protection fuse (Bay-O-net Fuse), and can provide the full range protection for indoor power system. The product has passed the type test conducted by the national high-voltage electrical equipment quality supervision and inspection center, and conforms to GB15166.2, IEC282-1 and IEEE C57.92.
Installation Instructions

Product Parameters
Type |
Rated Current |
A(Inch/mm) |
B(Inch/mm) |
MA |
∅C |
Breaking Current |
XRNT5-15.5 |
20 25 31.5 40 |
9.76/248 |
8.5/216 |
M6 |
53 |
50KA |
|
50 63 80 100 125 |
14.0/356 |
12.76/324 |
M6 |
53 |
50KA |
|
150 175 |
15.94/405 |
14.69/373 |
M6 |
53 |
50KA |
|
200 250 |
19.45/494 |
18.19/462 |
M10 |
76 |
50KA |
|
315 |
23.62/600 |
22.32/567 |
M10 |
76 |
50KA |
XRNT5-25 |
20 25 31.5 40 50 63 80 100 |
19.45/494 |
18.19/462 |
M10 |
76 |
50KA |
|
125 150 175 200 |
23.62/600 |
22.32/567 |
M10 |
76 |
50KA |
XRNT5-40.5 |
10 20 |
22.68/576 |
21.38/543 |
M10 |
76 |
31.5KA |
|
31.5 40 50 63 |
23.86/606 |
22.56/573 |
M10 |
76 |
31.5KA |
|
80 100 125 150 165 |
27.36/695 |
25.79/655 |
M10 |
76 |
31.5KA |
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