Join 60,000+ competitive exam aspirants
or with email
Your Cart
SubtotalтВ╣0
TotalтВ╣0
Examoogle тАв User тАв info@examoogle.com тАв EE-2024-8821
Chapter 1 of 12 тАв Page 1 of 248ЁЯФТ Protected PDF тАв Watermarked
Join 60,000+ competitive exam aspirants
For Low capacity which type of fuse is used?
Kitkat Fuse
HRC Fuse
Cartige Fuse
All of the above
Kitkat Fuse
A Kitkat fuse, also known as a semi-enclosed re-wireable fuse, is primarily designed for low voltage and low capacity applications. It consists of a base and a carrier made of porcelain, providing a simple, cost-effective solution for domestic and small-scale industrial wiring.
A Kitkat fuse, also known as a semi-enclosed re-wireable fuse, is primarily designed for low voltage and low capacity applications. It consists of a base and a carrier made of porcelain, providing a simple, cost-effective solution for domestic and small-scale industrial wiring.
H=I2Rt тАФ The heat produced in the fuse element causing it to melt
IratedтАЛ=k├Чd3/2 тАФ Preece's law relating fuse current capacity to diameter d
The principle involves the melting of a fuse element (typically lead or copper alloy) when current exceeds the rated limit. Due to its open-air, semi-enclosed nature, it lacks a mechanism for arc suppression, making it unsuitable for high-capacity or high-voltage circuits where dangerous arcs may occur.
Used in residential installations (15A to 100A).
Made of porcelain, which acts as an insulator.
The fuse element is manually replaced after a blowout.
Lacks proper breaking capacity; hence, restricted to low fault-level areas.
Extremely low cost
Ease of replacing the fuse element
Availability in local markets
Very low breaking capacity
Risk of deterioration of fuse element due to oxidation
Cannot handle high-fault currents (short circuits)
Domestic wiring circuits
Low voltage distribution boards
Small single-phase industrial loads
| Feature | Kitkat Fuse | HRC Fuse |
|---|---|---|
Interrupting Capacity | Very Low | High |
Material | Porcelain Base/Carrier | Ceramic/Glass Tube |
HRC (High Rupturing Capacity) fuses are used for high-voltage and high-current industrial applications.
Cartridge fuses are fully enclosed and offer better protection than Kitkat, but still lack the specialized quenching medium of HRC fuses.
A is correct тАФ The Kitkat fuse is a semi-enclosed re-wireable device specifically utilized for low-capacity domestic and small electrical circuits.
Always remember that in exams, 'Kitkat' is synonymous with 'Re-wireable' and 'Low capacity', whereas 'HRC' is synonymous with 'High breaking capacity' and 'Industrial protection'.