20D27Q

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20D27Q Application Field and Working Principle

20D27Q electrical specialty fuses offer thermal protected overload current interruption and are ideal for breaking circuits in the event of short circuits and/or long circuit protection in low-voltage applications. They have UL and CSA electrical ratings, as well as dimensions to IEC, UL, and CSA standards. 20D27Q specialty fuses provide reliable current interruption in a variety of low-voltage applications such as electronic circuity, telecommunications, and power supplies.

The 20D27Q electrical specialty fuse has a cylindrical ceramic tube body, with stainless steel endcaps within which the active element is located. It is encased in a universal end cap, which is a two-piece assembly, with a pyrotechnic charge attached to the center post. In addition, each 20D27Q fuse has a removable terminal connector which fits over the end cap and is secured by screws.

A 20D27Q fuse is a temperature-sensitive element that can break a circuit when overload conditions occur. A temperature-sensitive element, such as a bimetallic strip, is located within the end cap. Under normal operating conditions, the bimetallic strip remains in its unexposed state. If an overload occurs, the temperature of the bimetallic strip rises, causing it to deform and initiate the pyrotechnic charge. This in turn causes the end cap to be blown open, breaking the circuit.

In order for a 20D27Q fuse to perform reliable overload current interruption, its temperature-sensitive elements must have the proper design and tested materials. The most important characteristics to consider include sensitivity, energy absorbed, and time to initiate. With proper design, these elements will be able to accurately and reliably detect current overload and respond like required.

When installed in a circuit, the 20D27Q electrical specialty fuse offers simple disconnecting means and current limiting. It also has a low insertion loss, is corrosion and shock resistant, and has a high breaking capacity. Additionally, its design enclosure enables it to perform in a wide variety of environmental conditions.

Today’s 20D27Q electrical specialty fuse offers an advanced protection technology for a variety of low-voltage applications. It is a safe and reliable current interruption device that provides precise protection when required. It is also very cost-effective and has the necessary UL and CSA ratings.

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