170M4139

Applications:	Electrical, Industrial
Melting I²t:	3800
Size / Dimension:	3.150" L x 2.087" W x 2.598" H (80.00mm x 53.00mm x 66.00mm)
Package / Case:	Rectangular, Blade
Mounting Type:	Bolt Mount
Breaking Capacity @ Rated Voltage:	100kA
Operating Temperature:	--
Approvals:	CSA, UR
Class:	--
Features:	Indicating
Series:	--
Response Time:	--
Voltage Rating - AC:	1.3kV
Current Rating:	200A
Fuse Type:	Square
Moisture Sensitivity Level (MSL):	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Packaging:	Bulk

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Electrical, Specialty Fuses- 170M4139 Application Field and Working Principle

The 170M4139 from Eaton is a dual element, time delay, midget class CC Fuse. With a voltage rating of 600Vac/250Vdc, this fuse features a plastic construction and operates at a temperature range of -40 – 130 °C and has a current rating of 10A. It offers a superior overload and short circuit protection and is suitable for utilizes needing periodic protection, plus it features a field-replaceable pick-up and trip-out elements.The 170M4139 is designed with a dual element feature allowing for multiple levels of protection combining, slow-blow/time-delay fusing and fast-acting characteristics. As fuses of this class go, the 170M4139 is one of the most versatile of the midget fuse options. With multiple current ratings available, the 170M4139 is one of the most reliable in its class and ideal for use with both AC and DC equipment, which makes it particularly useful in control circuits.The 170M4139 is a reliable way to ensure that your electrical equipment is always operating safely. This fuse can help protect against overcurrents resulting from short circuiting, overloading, or power surges. In addition, its time delay characteristics provide additional customized protection from electronic circuit overloads.The clear body of the 170M4139 allows for easy visual inspection even while in operation. The product also has high resistance to ultraviolet radiation and is RoHS compliant for a long and reliable service life. A built-in fuse holder adds to the advantages of this fuse, as most other midgets fuses are designed for only plug-in applications.In terms of operation, the 170M4139 functions according to a pre-determined response based on both series and parallel protection elements in the fuse. The parallel element is the instantaneous element and provides fast-acting protection from high current or short-circuit events. Meanwhile, the slower reaction series element provides the time-delay feature and long-time protection against overloads.The normal current carrying capacity for this fuse is indicated by the current rating which is 10 A. Stated differently, the fuse should be selected so that the normal current does not exceed its rating. This fuse’s interrupting capacity, or the maximum current it can safely interrupt, is 200 A at 600V AC.In applications where the fuse is placed in parallel with a resistor, another important factor to be considered is the current rating of the resistor. The current rating of the resistor should not exceed the current rating of the fuse at maximum harmonics. Due to the time-delay feature of the 170M4139, the resistor should be selected with ratings higher than the fuse current.Finally, the 170M4139 meets UL, CSA UL and CE standards. It is most commonly used in motor control circuits, motor overloads, lighting fixtures, switching circuits, and process control.Overall, the 170M4139 is a reliable and versatile midget class CC fuse ideal for many electronics and control applications. It provides the best of both fast-acting protection and time-delay features as well as a current-limiting component to protect against surge overloads in a variety of systems. With a clear body for an easy visual inspection and numerous approvals, this fuse offers top-notch performance and security.

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