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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
342 PTO-50       380 10-50 106 66 10.2 25 52 189.5
343 PTO-100       380 20-100 125 67 18 40 52 313
344 PTO-200       380 50-200 135 67 23 46 58 404.5
345 PTO-400       380 160-400 145 67 30 55 66 601
346 PTO-600       380 250-600 165 67 36 66 77 855
347 PTO-1000       380 500-1000 280 90 50 85 100  2050

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