Package / Case:	5mm x 20mm (Axial)
DC Cold Resistance:	0.1515 Ohms
Size / Dimension:	0.228" Dia x 0.886" L (5.80mm x 22.50mm)
Color:	--
Operating Temperature:	-55°C ~ 125°C
Approvals:	CCC, CE, CSA, KC, PSE, SEMKO, UL, VDE
Melting I²t:	1.52
Breaking Capacity @ Rated Voltage:	1.5kA
Mounting Type:	Through Hole
Series:	215
Response Time:	Slow
Voltage Rating - AC:	250V
Current Rating:	1A
Fuse Type:	Cartridge, Ceramic
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Tape & Reel (TR)

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Introduction

Fuses are electrical protection devices used in many different applications to protect circuits from short circuits, overloads and other destructive events. The 0215001.MRET3P fuse is one such device used to prevent hazardous situations from occurring. This article will cover the application fields and working principle of the 0215001.MRET3P, as well as its types, ratings, and testing procedures.

Applications Fields

The 0215001.MRET3P is a fast-acting fuse that is ideal for applications dealing with low-voltage & low-current circuits. It has a wide range of applications including home electronics, power supplies, lighting, and appliances. It can also be used for DC-to-DC converters. Fuses of this type are especially useful in circuits where component cost and safety are a concern.

Working Principle

The 0215001.MRET3P fuse consists of two parts – a metal base and an electrically conductive bridge. The bridge is housed in a porcelain cylinder and is connected to the metal base. When an overcurrent situation occurs, the bridge heats up due to increased electrical resistance, melting the porcelain and causing the bridge to be interrupted. This interrupts the current flow and protects the circuit from further damage.

Types

The 0215001.MRET3P comes in a variety of types, each suited for a specific application. There are SMD or Surface Mount Type (SMT) fuses, which are usually used in components such as DC-DC Converters, and PCB or Printed Circuit Board (PCB) fuses. Other types include UL/CSA approved fuses, glass tube fuses, resettable fuses, and many others.

Ratings

The 0215001.MRET3P has a variety of ratings and features, such as current rating, reaction time, and voltage rating. Its current rating ranges from 0.25A to 20A, with a 1.5 second reaction time. Its voltage rating ranges from 16V to 120V AC/DC. It is also designed to protect against surges up to 2,500 amperes.

Testing

Testing of the 0215001.MRET3P fuse is important to ensure that it works properly in the circuit. Many fuse manufacturers offer test kits that can be used to check the fuse for proper operation. Typically, these tests are conducted with an ohmmeter, which measures the resistance of the fuse bridge. By measuring the resistance before and after the test, it is possible to determine whether the fuse is operating correctly or not.

Conclusion

The 0215001.MRET3P is a fast-acting fuse designed for low-voltage and low-current circuits. It has a wide range of applications and is available in a variety of types, ratings, and features. Testing is essential to ensure proper operation and safety of the circuit it is protecting and can be done easily with the help of an ohmmeter.

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