BK/ETF-400MA

Package / Case:	Radial, Can, Vertical
DC Cold Resistance:	0.28 Ohms
Size / Dimension:	0.329" Dia x 0.303" H (8.35mm x 7.70mm)
Color:	--
Operating Temperature:	-55°C ~ 125°C
Approvals:	SEMKO, UL
Melting I²t:	0.95
Breaking Capacity @ Rated Voltage:	100A
Mounting Type:	Through Hole
Series:	ETF
Response Time:	Slow
Voltage Rating - AC:	277V
Current Rating:	400mA
Fuse Type:	Board Mount (Cartridge Style Excluded)
Moisture Sensitivity Level (MSL):	--
Part Status:	Obsolete
Lead Free Status / RoHS Status:	--
Packaging:	Bulk

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Fuses: BK/ETF-400MA Application Field and Working Principle

Fuses are an important part of any electrical system. They are one of the main components used for protecting circuits from overcurrents, short circuits, and other dangerous conditions. The BK/ETF-400MA fuse is a specific type of fuse that is designed to provide superior protection from the hazards associated with electrical current. This article will provide information on the application field and working principle of the BK/ETF-400MA fuse and the specific capabilities that it provides.The BK/ETF-400MA fuse is a type of fuse specifically designed to be used in medium voltage systems. This type of fuse is suitable for both alternating current (AC) and direct current (DC) applications, and is primarily used for extreme overcurrent protection in high-powered systems. The BK/ETF-400MA has a maximum interrupting current rating of 400kA, which makes it suitable for use in medium voltage systems with current ratings up to 250 kV.The working principle of the BK/ETF-400MA fuse is simple and straightforward. This type of fuse is designed to protect circuits from overcurrent and short circuits. When an overcurrent or short circuit is detected, the fuse will interrupt the current flow, preventing further damage to the circuit. The BK/ETF-400MA fuse has a wide range of operating temperatures, ranging from -20°C to +85°C, and is designed to operate within the specified temperature range without any adjustment or calibration.The BK/ETF-400MA fuse is an excellent choice for medium voltage systems, due to its high interrupting current rating and wide temperature range. Furthermore, this type of fuse can be used in a wide range of applications, including power utilities, generator systems, and more. Additionally, it is an economical solution compared to other fuses, offering superior performance and cost-effectiveness. The BK/ETF-400MA fuse is also designed with safety in mind. It is designed with a built-in mechanism that will deactivate the current flow after a certain period of time. This ensures that if the fuse is exposed to an overcurrent or short circuit, the current will be shut off after a certain amount of time, preventing further damage to the circuitry. When selecting a fuse for a specific application, it is important to ensure that the fuse is compatible with the specific application and circuit requirements. The BK/ETF-400MA fuse is highly versatile and can be used in a wide variety of applications, making it a great choice for many different types of electrical systems. Overall, the BK/ETF-400MA fuse is an effective and reliable solution for protecting circuits in medium voltage systems from overcurrent and short circuit conditions. It is a cost-effective solution that offers superior performance and safety features. It is also highly versatile and can be used in a wide range of applications, making it an ideal choice for many different types of electrical systems.

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