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Square Pipe Fuse Links With Knife Contacts

Square Pipe Fuse Links With Knife Contacts - Fuse Links & Holders

Applications: 
Protection against overload and short-circuit in electric lines(type gG), also available for protection of semiconductor parts and equipments against short-circuit(type R) and protection of motors(type aM).Rated voltage up to 1140V,Rated current up to 1250A; Working frequency 50Hz AC; Rated breaking capacity up to 120KA. Compliant with GB13539 and IEC269. 

Dsign Features:
Varilable cross-section fuse element made from pure metal sealed in cartridge made from high-duty ceramic. Fuse tube filled with chemically treated high-purity quartz sand as arc-extinguishing medium. Dot-welding of fuse element ends to the terminals ensures reliable electric connection and forms insert knife type contacts. Indicator or striker may be attachend to the fuse link to show cutout of fuse or to give various signals and to cut the circuit automatically.
 
Specification:

Cat NO. Models Rated Voltage(V) Rated Current(A) Dimensions/size(mm) Weight(g)
HRO Cross-reference
gG(Normal) aR(Fast) gG(Normal) aR(Fast) A B C D H
310 RO30A RS30A NT00C 500/660 4-100 78 49 15 21 48 123
311 RO30B RS30B NT00C 500/660 4-100 78 49 15 21 48 117
312 RO30C RS30C 3NA3 3NE18 500/660 10-100 78 49 15 21 52.5 132
313 RO31A RS31A PH00 500/660 10-100 78 49 15 30 53 178.5
314 RO31B RS31B NT0 3NE41 500/1140 6-160 125 68 15 29 61.5 278
315 RO31C RS31C NT1 500 32-200 135 68 15 29 61.5 293.5

Square Pipe Fuse Links With Knife Contacts - Fuse Links & Holders