Shanghai Gaosuo Electrical Co., Ltd.
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High Voltage Fuse

Reliable Power, Reliable Business

Product Title

XRNT-12KV/20A, 31.5A, 40A, 50A High-voltage Current-limiting Fuse

The XRNT-12KV high-voltage current-limiting fuse is suitable for 3.6-40.5kV indoor AC systems. With rated currents of 20A, 31.5A, 40A, and 50A, it is used in conjunction with load switches and vacuum contactors to provide reliable short-circuit and overload protection for power transformers and electrical equipment. It is a supporting product for high-voltage switchgear, ring main units, and prefabricated substations.
XRNT-12KV/20A, 31.5A, 40A, 50A High-voltage Current-limiting Fuse

Product Details

Product Details

XRNT-12KV/20A, 31.5A, 40A, 50A High-voltage Current-limiting Fuse

XRNT-12KV High-voltage Current-limiting Fuse | 20A-50A Transformer Overload and Short-circuit Protection

I. Application

This product is suitable for indoor AC 50Hz systems with rated voltages of 3.6kV, 7.2kV, 12kV, 24kV, and 40.5kV. It can be used in conjunction with other switching devices such as load switches and vacuum contactors as a protection element for short-circuit and overload protection of power transformers and other equipment. It is also an essential supporting product for high-voltage switchgear, ring main units, and high/low voltage prefabricated substations. The XRNT-12KV high-voltage current-limiting fuse, with its excellent current-limiting characteristics and high breaking capacity, is widely used in urban distribution networks and industrial and mining enterprise power distribution systems.

II. Model

XRNT High-voltage Current-limiting Fuse Model Description Diagram

III. Technical Parameters and Dimension Drawings

XRNT High-voltage Current-limiting Fuse Technical Parameters Diagram

Model Rated Voltage kV Rated Current A Diameter × Length L (mm) Rated Breaking Current kA Model Rated Voltage kV Rated Current A Diameter × Length L (mm) Rated Breaking Current kA International Reference Model
XRNT1 3.6/7.2 6.3 φ51×192 63 XRNT1 6/12 6.3 φ51×192 50 SDLAJ
XRNT1 3.6/7.2 10 φ51×192 63 XRNT1 6/12 10 φ51×192 50 SDLAJ
XRNT1 3.6/7.2 16 φ51×192 63 XRNT1 6/12 16 φ76×192 50 SFLAJ
XRNT1 3.6/7.2 20 φ51×192 63 XRNT1 6/12 20 φ76×192 50 SFLAJ
XRNT1 3.6/7.2 25 φ51×192 63 XRNT1 6/12 25 φ76×192 50 SFLAJ
XRNT1 3.6/7.2 31.5 φ51×192 63 XRNT1 6/12 31.5 φ76×192 50 SFLAJ
XRNT1 3.6/7.2 40 φ51×192 63 XRNT1 6/12 40 φ76×192 50 SFLAJ
XRNT1 3.6/7.2 50 φ51×192 63 XRNT1 6/12 50 φ76×192 50 SFLAJ

IV. Technical Parameters and Dimension Drawings

XRNT High-voltage Current-limiting Fuse External Dimension Diagram 1

XRNT High-voltage Current-limiting Fuse External Dimension Diagram 2

Ensure that for the XRNT-12KV high-voltage current-limiting fuse, the XRNT-12KV current-limiting fuse for transformer protection has rated currents of 20A~50A optional. When installing, select the fuse link by multiplying the transformer rated capacity by a factor of 1.5~2. Keep the contact surfaces at both ends of the fuse tube clean and free of oxidation. Adjust the distance between the striker and the switch trip mechanism according to the manual.

XRNT-12KV High-voltage Current-limiting Fuse | 20A-50A Transformer Overload and Short-circuit Protection

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