BK/MDA-V-4/10

Series:	MDA
Packaging:	Bulk
Lead Free Status / RoHS Status:	--
Part Status:	Obsolete
Moisture Sensitivity Level (MSL):	--
Fuse Type:	Cartridge, Ceramic
Current Rating:	400mA
Voltage Rating - AC:	250V
Response Time:	Slow
Package / Case:	3AB, 3AG, 1/4" x 1-1/4" (Axial)
Mounting Type:	Through Hole
Breaking Capacity @ Rated Voltage:	--
Approvals:	CSA, UL
Operating Temperature:	--
Color:	--
Size / Dimension:	0.266" Dia x 1.292" L (6.76mm x 32.82mm)

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Introduction

Fuses are all-important devices in the electrical field. They are designed to protect electrical circuits from potentially hazardous overloads and short-circuits. In this article, we will be exploring the the BK/MDA-V-4/10 application field and working principle.

Application Field

The BK/MDA-V-4/10 is a general purpose fuse. It is typically used in HVAC, low voltage lighting, motors, and control panel wiring. It is also used to protect machinery, motors, wire, and circuit breakers.

Working Principle

The BK/MDA-V-4/10 is designed to safely dissipate over-current when the load is excessive. When an electrical current passing through it exceeds the fuse’s amperage rating, the metal element inside the fuse, referred to as the filament, melts due to the heat generated from the current. Once the filament breaks, the circuit is broken thus eliminating the risk of overheating or malfunction of the appliance. To prevent continuous tripping, the fuse is designed to reset once the metal filament cools down. This allows for continuous operation of the appliance. The BK/MDA-V-4/10 can withstand a maximum of 250 volts and a maximum of 48 amperes in 25°C ambient air temperatures.

Advantages and Disadvantages

The BK/MDA-V-4/10 offers some advantages over more traditional fuses. It’s smaller size results in less wiring material and labor cost, high breaking capacity, and longer life. It is also UL-listed and certified, ensuring it meets all National Electrical Code (NEC) standards. On the flip side, its smaller size also can make it more difficult to identify and damage. It is possible for the fuse to be damaged due to prolonged exposure to abnormally high temperatures as well as due to age. It is also possible for the fuse to be overloaded resulting in it tripping under normal loads.

Conclusion

The BK/MDA-V-4/10 is a general purpose fuse used in many electrical applications. It is designed to protect appliances from excessive current and short-circuiting. Its advantages include UL-listing and a small size, however it can be prone to overloading, overheating, and damages due to age. Fuses are essential in the electrical field and the BK/MDA-V-4/10 is a perfect fit in many applications. With its UL-listing, small size, and high breaking capacity, it can be relied upon to provide the protection needed.

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