BK/GBB-20

Series:	GBB
Packaging:	Bulk
Lead Free Status / RoHS Status:	--
Part Status:	Obsolete
Moisture Sensitivity Level (MSL):	--
Fuse Type:	Cartridge, Ceramic
Current Rating:	20A
Voltage Rating - AC:	250V
Voltage Rating - DC:	125V
Response Time:	Fast
Package / Case:	3AB, 3AG, 1/4" x 1-1/4"
Mounting Type:	Holder
Breaking Capacity @ Rated Voltage:	10kA
Approvals:	CSA, UR
Operating Temperature:	--
Color:	--
Size / Dimension:	0.250" Dia x 1.250" L (6.35mm x 31.75mm)
DC Cold Resistance:	0.0033 Ohms

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Introduction
Fuses are commonly used to protect circuits against excessive current. Various types of fuses have been developed to meet different application requirements. BK/GBB-20 is a fast-blowing dual-element fuse that has become popular for various industrial applications. This article will discuss the application fields and working principle of the BK/GBB-20 fuse.
Application Fields
The BK/GBB-20 is a dual-element fast-blowing fuse designed for industrial applications. It is suitable for use in high-current, low-voltage circuits. It is also well-suited to applications where precise current rating control is desired. It is often used to protect circuits against short circuit, line-to-ground, and reverse polarity fault conditions. The BK/GBB-20 is widely used in motor control, robotic control, energy management, power conditioning, uninterrupted power supplies, and telecommunication applications.
Working Principle
The BK/GBB-20 fuse is a fast-acting, dual-element fuse. It consists of two elements: a primary element and a secondary element. The two elements are connected in series and each element has its own magnetic element. When the current rises above the prescribed rating, the magnetic field in the primary element causes it to open, allowing current to flow through the secondary element. The secondary element then opens, breaking the circuit. The two elements work together to break the circuit quickly in the event of an overcurrent condition, helping to protect the circuit from damage.
The BK/GBB-20 fuse also has a low voltage drop-out rating. This rating is the amount of voltage drop before the fuse will open. This ensures that the fuse will open before the voltage reaches a point where the circuit components can be damaged. The low voltage drop-out rating of the BK/GBB-20 fuse helps to protect vital circuit components from damage in the event of an overcurrent condition.
Conclusion
The BK/GBB-20 is a dual-element fast-blowing fuse designed for industrial applications. It is suitable for high-current, low-voltage circuits and is commonly used to protect against short circuit, line-to-ground, and reverse polarity fault conditions. The fuse is fast-acting, with a low voltage drop-out rating, ensuring that the fuse will open before the voltage reaches a point where the circuit components can be damaged. The BK/GBB-20 fuse is widely used in motor control, robotic control, energy management, power conditioning, uninterrupted power supplies, and telecommunication applications.

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