Safety fuse cartridge

Details Safety fuse cartridge Safety fuse cartridge

H - Electricity

01

H

306/147, 324/58.

H01H 85/32 (2006.01)

Patent

CA 1204804

Abstract Of The Disclosure A safety fuse cartridge having a porcelain body in which a fuse wire, which is embedded in sand, extends between a lower contact base and an upper contact head. The cartridge is provided with an indicator which includes a glow lamp that is connected in parallel to the fuse wire via a high-valued resistor which is also embedded in the sand. The high-valued resistor can be surrounded by a sleeve or tube of insulating material, especially a tube of silicon or steatite. The resistance value of the resistor is preferably 500 to 1000 megaohms.

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