This product is suitable for indoor AC 50Hz, rated voltage 7.2Kv-24Kv power system. As transformer and other power equipment overload or short circuit protection element. And can be used with other protective appliances (load switch, vacuum contactor). This type of fuse can reliably break any fault current between 2.5-5 times the rated current of the fuse and 50KA under specified service conditions.
1. Model and meaning:
| Domestic model | International model | Rating voltage(KV) | current (A) | Size(ØD*L) | Breaking current |
| XRNT1-12 | SDLDJ | 12 | 2, 3.15, 6.3, 10, 16, 20, 25, 31.5, 40, 50 | Ø51*292 | 50KA |
| SDLDJ | 12 | 50, 63, 71, 80 | Ø66*292 |
| SDLDJ | 12 | 100, 125 | Ø76*292 |
| SDLDJ | 12 | 160, 200 | Ø88*292 |
| SDLDJ | 12 | 224, 250 , 315 | Ø88*442 |
| | 12 | 315, 355 | Ø125*442 |
| XRNT1-24 | SDMDJ | 24 | 6.3, 10, 16, 20, 25, 31.5 | Ø51*442 | 50KA |
SFMDJ
| 24 | 40, 50, 63, 71, 80 | Ø76*442 |
| SQMDJ | 24 | 100, 125 | Ø88*442 | 40KA |
12kv product insulation level : 42kv Fracture resistance 48kv |
24kv product insulation level: 60kv Fracture resistance 70kv |
2. The dimension of fuse and installation size chart : 
| Fuse specification(mm) | L | A | B | C | D | H | G | F | Ød |
XRNT1-12
| 292 | 450 | 322 | 150 | 454 | 160 | 483 | 203 | 13 |
XRNT1-12
| 442 | 600 | 472 | 270 | 604 | 160 | 633 | 203 |
XRNT1-24
| 442 | 600 | 472 | 270 | 604 | 285 | 633 | 350 |
Fuse specification(mm)
LABCDHGF 3. Time-current characteristic curve: 
Xi 'an Wuhuan Special Fuse Co., Ltd. is a high-technology manufacturer company established by Wuhuan Electric Group in Xi 'an, Shaanxi Province, China's high voltage electric production base in 2000. It Mainly engaged in the development, design, manufacture, sales and service of fuses and other high voltage appliances. The main products of the company are high-voltage current limiting fuses, which are used in indoor 50HZ/60HZ power systems with rated voltage of 3.6-40.5KV. As American power transformer, Europe type power transformer, high voltage motor, voltage transformer, power capacitors and other electric equipment overload and short circuit protection, and in other appliances such as: load switch, vacuum contactor etc, protection circuit and complete sets of electrical equipment from damage by excessive overload current and short circuit current. The company has high-quality technical personnel, professional fuse manufacturing and testing equipment and advanced modern enterprise management concept, its product categories, production scale and sales revenue are growing at a high speed. Wuhuan Company implements ISO9001:2000 quality system standard, uses MCAD development and design, with the help of Intuitive ERP and advanced testing equipment to ensure the reliability of production and high quality products. All the products have passed the type test of the national high voltage electrical apparatus quality supervison and inspection center ,and are in line with the national GB/T15166.2 standard and IEC60282 standard of the International Electrotechnical Commission.
New products:
SDLDJ and SFLDJ & SDMDJ full-range protection high-voltage current limiting fuses developed by our company are mainly used for overload and short-circuit protection of domestic power generation transformers. This series of products complete specifications, rated current up to 100A, products have passed the national high voltage electrical quality supervision and inspection center type test.
Quality standards of the company:
We fully implement GB/T15166.2 and IEC60282(International Electrotechnical Commission) technical standards, product quality in line with the British BS standard, German DIN standard. Rigorous design, advanced technology, timely service, the company's quality system for the implementation of the quality policy to provide a full guarantee.
Our products:
1.High voltage fuse for overload protection of oil-immersed transformer
2.High voltage current limiting fuse for backup protection of oil-immersed transformer
3.High voltage current limiting fuse for power transformer protection
4.High voltage current limiting fuses for protection of 40.5kv transformer
5.High voltage current limiting fuse for full range protection of power transformer
6.High voltage current limiting fuse for protection of high voltage motor
7.High voltage current limiting fuse for vacuum contactor fuse (F-C) combination appliance
8.High voltage current limiting fuse for protection of voltage transformer
9.High voltage current limiting fuse for power capacitor protection
10.XRNT-15.5Q Full-range high-voltage current limiting fuse for transformer protection (integral)
11.Full range high voltage current limiting fuse for XRNT-40.5Q transformer protection (integral)
1.Are you manufacture?
We are a professional factory with more than 10 years of experience,Our projects supplied to Airprot/Subway/Railway/power station.
2.What is your technical advantages?
Our engineers worked in the power distribution industry field for 20~30 years.In particular, in non-standard customization of electric field, High altitude, non-standard voltage frequency field.
3.What is your price advantages?
we have 5 branch factories for electric components,all raw materials are one stop shopping,so we can save the value for you!
4.How about your quality advantage?
We are 100% guarantee the quality for 3 years.
5.How about your delivery time?
The delivery time with 7-10 working days after get your deposit. Our factory is located in Xi'an , China . In terms of quality and strength, we are both ahead of the market . 6.We can accept payment way:
TT/LC/DP /STS ORDER
