W-Type Current-Limiting Fuses for Motor Protection

Model NO.: XRNMI
Color: White,Brown
Length: 254/403/600mm
Rated Current: 25-224A
Diameter: 51/76mm
Rated Voltage: 7.2kv
Trademark: SR
Specification: ISO9001
Origin: China
HS Code: 8535100000
Applications

H. V current-limiting fuses type W is mainly used in AC50Hz, rated voltage 3.6~10KV, rated current up to 400A(3.6KV),224A(7.2KV) circuit for protection transformers and power equipments from overload and short-circuit. It can also be used with load switch, vacuum contact.
It conforms to IEC282-1, IEC644,BS and GB15166.2 standard.

Design Features

W type H. V HRC current-limiting fuses has two installation:bus-bar installation snd insert installation.it is small in volume,reliable in connection the power striker parallels to the fuse element made from pure silver .they are sealed. in the fuse tube filled with chemically treated high -purity quarta sand.it is made from heat resistand.high duty ceramic or epoxy glass.when fault circuit happens the fuse link metlts.the high resistant metal wire paralleling to fuse link melts immediatedly at the appearamce of the arc.and the strikerjumps out to push the chained equipment contact.signaling the melting or automatically cutting the circuit.W type H.V HRC current limiting fuse has many merits as high current limiting ability .high breaking capacity.quick and punctual in action.reliable in performance


Key Specifications/Special Features:
1.motor protection
2.High breaking capability
3.High voltage current limiting fuse
4.Suitable for electrical power system of AC 50Hz, rated voltage 10kV and below, rated current up to 400A(3.6KV),224A(7.2KV) circuit for protecting motor and other power equipment from overload and short-circuit.
5.High-pressured fuse conforms to the national GB15166.2 standard and the international electrical committee IEC 60282 standard as well as German DIN standard and British BS standard.



Foreign model
Department Rated voltage(KV) Rated current(A) Rated breaking current(KA) Diameter(mm)
 
Length(mm)
 
WDF.O XRNMI 3.6 50,63,80,100,125 50 51 254
WFF.O XRNMI 3.6 125,160,200 50 76 254
WKF.O XRNMI 3.6 250,315,355,400 50 76 254
WFN.O XRNMI 7.2 25,31.5,40,50,63,80,100,125,160 40 76 403
WKF.O XRNMI 7.2 200,224 40 76 403

 
XRNMI 10 25,31.5,40,50,63,80,100,125,160,200,224 40 76 600
 

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