There are many types of fuses, but the function of all these fuses is the same. To read more articles about circuit protection, click here. High interrupting rating. This is especially true where high fault currents exist or where small components such as Control Transformers or DC power supplies need protection. But the following basic formula shows, Current Rating & Current Carrying Capacity of Fuse, Response characteristic shows the response time for an, In the Current limiting fuse, they produce high resistance for a very short period while the non –, Types & Classification of Low Voltage and High Voltage Fuses. Please consider supporting us by disabling your ad blocker. A general Fuse consists of a low resistance metallic wire enclosed in a non combustible material. There are two types of Cartridge fuses. Personal Protective Equipment (PPE) for Electrical Works. The fuse link chamber may filled with boric acid in case of expulsion type HV (High Voltage) Fuses. A fuse is an electric / electronic or mechanical device, which is used to protect circuits from over current, overload and make sure the protection of the circuit. Switch Type Fuses:-In this type of fuse, basically metal enclosed of a switch and a fuse and is far used for low and medium voltage level. It also covers different types of HRC fuses like DIN type, NH Type, Blade Type, Liquid Type HRC Fuse, Expulsion Type HV Fuse, advantages & disadvantage etc. Fuses can be divided into two main categories according to the type of input supply voltage. Your email address will not be published. With most low voltage current limiting fuses (< 600 volts) having a 200,000 … The inner fuse element as fuse carrier made of tinned copper, Aluminum, Lead etc and the base made of porcelain having the IN and OUT terminals which is used to be in series with the circuit to protect. EE-Tools, Instruments, Devices, Components & Measurements, Electrical & Electronics Notes and Articles, Automotive, Blade Type & Bolted Type Fuses, Main Difference between Fuse and Circuit Breaker, MCB (Miniature Circuit Breaker) – Construction, Working, Types & Uses, Difference Between MCB, MCCB, ELCB & RCB, RCD or RCCB Circuit Breakers, Air Circuit Breaker (ACB): Construction, Operation, Types and Uses, How to Find the Proper Size of Circuit Breaker? Resettable fuse is a device, which can be used multiple times without replacing it. Application of resettable fuses is overcome where manually replacing fuses is difficult or almost impossible, e.g. Different types of fuses can be categories on the following characteristics. in the AC system, voltage with 60Hz or 50Hz frequency changes its amplitude from zero to 60 times every second, so arc can be extinct easily as compared to DC. Hence, the fuses could be blown. Therefore, it disconnects the power supply from the connected system. Fuse base is connected to the fuse cap where the cartridge is inside the fuse cap. Step by Step Procedure with Calculation & Diagrams, How to Calculate the Battery Charging Time & Battery Charging Current – Example, Automatic UPS / Inverter Wiring & Connection Diagram to the Home, How to Find The Suitable Size of Cable & Wire for Electrical Wiring Installation? Response characteristic shows the response time for an overcurrent event. Limits peak let-through current to a value less than the available peak current. please clarify. Current carrying capacity is the amount of current which a fuse can easily conduct without interrupting the circuit. So in order to minimize the fuse arcing, DC fuse are little bigger than an AC fuse which increases the distance between the electrodes to reduce the arc in the Fuse. They are made for … Fuses can also help make your control systems UL and NEC compliant. How to Read MCB Nameplate Data Rating Printed on it? There are many other ways, like circuit breakers or protective relays, and here are 10 reasons why you might just want to consider fusing instead. Define fuse and its uses 2 See answers Shreyadas90 Shreyadas90 Fuse is a small, thin conductor designed to melt and separate into two pieces for the purpose of breaking a circuit in the event of excessive current. As a fuse ages, the speed of response will not slow down or change. Cartridge fuses are used to protect electrical appliances such as motors, air-conditions, refrigerator, pumps etc, where high voltage rating and currents are required. However, fuses are not the only devices that you can use to protect your gear from overcurrent. 1. Fuses are sacrificial devices used to protect much more expensive electrical components from the damaging effects of overcurrent. Such fuses found their application in motor control electronics systems because motors take a lot more current at starting than running. Current limiting fuses from AutomationDirect meet the UL and NEC codes. 1. We have already discussed in very details about HRC fuse (High Rupturing Capacity) construction, operation and their applications. They also include two fuse elements, which allows a single fuse to effectively handle two circuits. On the other hand, i.e. Related Post: Air Circuit Breaker (ACB): Construction, Operation, Types and Uses. Your email address will not be published. The three basic purposes of fuse are - 1. To begin with it is a condensed informative article which I feel as very useful. In the Current limiting fuse, they produce high resistance for a very short period while the non – current limiting fuse produces an arc in case of high current flow to interrupts and limit the current in related and connected circuits. The higher the current flowing through the wire, faster will be the response time. SMD Fuses (Surface Mount Fuse), Chip , Radial, and Lead Fuses, Resettable fuse is a device, which can be used multiple times without replacing it. High Voltage fuses are rated for more than 1500V and up to 13kV. 25% Off on Electrical Engineering Shirts. They open the circuit, when an over current event occurs and after some specific time they connect the circuit again. Tri-National Standards specify fuse performance and maximum allowable fuse Ip and I²t let-thru values. 6A fuse rating instead of 5.4A for safe and reliable operation of the circuit. Fuses have no moving parts to wear out or become contaminated by dust or oil.