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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
318 RO32 RS32 NT1RT16-1
3NA1RT20-1
3NE12 500/660 32-250 135 68 20 48 60 455
319 RO32A RS32A   1140 200 172 110 19.5 44 58 570
320 RO32B RS32B NT1RT16-1 500 250 135 68 20 40 68 393
321 RO33 RS33 NT2RT16-2
3NA1RT20-2
3NE13 500/660 80-400 150 68 25 58 70 650
322 RO33B RS33B RT16-2 500 400 150 68 25 52 71 580
323 RO34 RS34 NT3RT16-3
NH3RT20-3
3NE14 500/660 160-630 150 68 32 67 80 880
324 RO35 RS35   500 6-160 135 68 20 30 53 249
325 RO36 RS36 EAPO 500 32-200 135 68 20 40 59 356
326 RO39A RS39A NT4a 380/500 500-1250 200 90 50 97 113 2140

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