Series:	BLS
Packaging:	Bulk
Lead Free Status / RoHS Status:	--
Part Status:	Active
Moisture Sensitivity Level (MSL):	--
Fuse Type:	Cartridge
Current Rating:	400mA
Voltage Rating - AC:	600V
Response Time:	Fast
Applications:	Electrical, Industrial
Features:	--
Class:	--
Approvals:	CSA, UL
Operating Temperature:	--
Breaking Capacity @ Rated Voltage:	10kA
Mounting Type:	Holder
Package / Case:	5AG, 10mm x 38.1mm
Size / Dimension:	0.406" Dia x 1.375" L (10.31mm x 34.93mm)
DC Cold Resistance:	11.5 Ohms

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0BLS.400T Application Field and Working Principle

Introduction to 0BLS.400T

The 0BLS.400T is a high current short circuit protect device or a current limiting fuse used in high current applications, such as DC power distribution where inrush currents and over current protection is highly important. It is widely used in the protection of high-power equipment as well as for power distribution in places such as data centers or various other large industrial environments.

Features and Benefits of 0BLS.400T

The 0BLS.400T has a few features and benefits that make it an ideal option for short circuit protection. Specifically, the 0BLS.400T• Has an independent secondary fuse body that is selectively rated and is designed for quick installation• Uses a cadmium-free, nickel-plated terminal construction which increases ability to resist corrosion• Has a rated short circuit interrupt of 400kA minimum • Uses an ultra-fast response design which helps reduce risk of collateral damage to the system• Includes trip flags to indicate fuse operation• Provides superior current limiting capabilities

Application of 0BLS.400T

The 0BLS.400T is primarily used for overcurrent protection, providing protection for systems and equipment against overload and short-circuit events. Its independent secondary fuse body is designed for quick installation and effective calibration, and it also reduces the cost of ownership of a system as it increases safety and meets short-circuit safety requirements.In addition, the 0BLS.400T is used in high-power applications, such as DC power distribution in areas like telecommunications and data centers. Its ability to handle high inrush currents make it a reliable protection device for such environments.

Working Principle of 0BLS.400T

The 0BLS.400T fuse works on a principle of protective short-circuit. When the current in the device reaches a certain threshold, the fire melts the fuse wire, redirecting the excess current through a resistance loop. The resistance causes the current to drop, limiting the current through the system and providing the required protection. The rapid thermal expansion of the fuse wire generates oxygen and nitrogen which helps to limit the temperature at the time of melting. This ensures an effective short circuit protection with no residual damage to the system.

Conclusion

The 0BLS.400T fuse is an ideal device for overcurrent and short-circuit protection. Its features such as independently rated fuse bodies, cadmium-free terminals, 400kA minimum short circuit interrupt rating, ultra-fast response, and trip flags make it an ideal choice for high-power systems such as DC power distribution. It also helps reduce the cost of ownership of a system and increases safety while meeting short-circuit safety requirements.

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