MV155F2DCS200E

Series:	*
Part Status:	Active
Fuse Type:	Cartridge
Current Rating:	200A
Voltage Rating - AC:	15.5kV
Response Time:	--
Applications:	Transformer Protection
Features:	Visual Indicating
Class:	--
Approvals:	--
Operating Temperature:	--
Breaking Capacity @ Rated Voltage:	50kA
Mounting Type:	Holder
Package / Case:	Cartridge, Non-Standard
Melting I²t:	465100

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MV155F2DCS200E Application Field and Working Principle

Electrical fuses play an important role in ensuring proper functioning of electrical circuits. Specialty fuses are designed and rated to ensure specific protection and performance in a variety of different applications. The MV155F2DCS200E is one such fuse, specifically designed for UL Class CC / Time Delay type applications. In this article, we will discuss the application field of the MV155F2DCS200E fuse and its working principle.

Application Field of MV155F2DCS200E

The MV155F2DCS200E is a current-limiting dual element time-delay fuse manufactured for UL Class CC/Time Delay applications. It has been tested to UL 248-14 and is designed to be used with various UL listed AC and DC protective devices such as motor control centers, mechanical interlocks, and panel boards. It is suitable for 600-volt AC and 250-volt DC applications that are protected by UL listed overcurrent protection devices.The MV155F2DCS200E has a voltage rating of 600V AC/250V DC, an amperage rating of 200A, and an interrupting rating of 10 kA at 250 V AC or 25 kA at 600 V AC. It has a maximum voltage drop of 16V and a sensitivity of 0.25-1.00A. It also has a minimum melting I2t of 110 Amps squared seconds.

Working Principle of MV155F2DCS200E

The MV155F2DCS200E fuse is a dual element time-delay fuse that combines two special electronically controlled elements- a metal-oxide varistor (MOV) and a low melting-point alloy- to provide reliable overload protection. The MOV senses transient overvoltages and prevents thermal shock, while the low melting-point alloy element responds to long-term overloads.The MV155F2DCS200E works by allowing current to pass through the fuse and to the load until it reaches the operation current, at which point the fuse will trip and break the circuit. Once the overload condition is removed, the fuse will reset and allow current to flow again.

Conclusion

The MV155F2DCS200E is a UL-listed dual element time-delay fuse specifically designed for UL Class CC/Time Delay applications. It is suitable for 600V AC and 250V DC applications protected by UL-listed overcurrent protective devices. The fuse combines a metal-oxide varistor and a low melting-point alloy to provide reliable overload protection, and it works by allowing current to pass through the fuse until it reaches the operation current, at which point the fuse will trip and break the circuit.

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