What are the parts of a fuse?
A fuse typically consists of the following main parts:
1.Fuse Element: The fuse element is the heart of the fuse and is responsible for carrying and interrupting the current flow. It is usually a thin strip or wire made of a material with a relatively low melting point, such as copper, silver, or an alloy.
When the current exceeds the fuse’s rated value, the element heats up and melts, causing the fuse to open and break the circuit.RT18 Series AC and DC Din Rail Fuse Holder
2.Fuse Body: The fuse body provides physical support and insulation for the fuse element. It is typically made of ceramic, glass, or plastic materials. The body encloses and protects the fuse element from external influences and provides electrical insulation.
3.End Caps/Terminals: The end caps or terminals are metallic components attached to each end of the fuse body. They provide electrical connections for the fuse element, allowing it to be connected within the electrical circuit.
The end caps can be designed in various forms, such as blades, screws, or clips, depending on the type and application of the fuse.RT18 Series AC and DC Din Rail Fuse Holder
4.Filling Material (Optional): In some fuses, there may be a filling material inside the fuse body. This material may be a sand-like substance or a gas, such as nitrogen or argon.
The filling material helps extinguish the arc that occurs when the fuse opens, improving the fuse’s performance and reliability.
5.Indication or Markings: Fuses often have markings or indicators on their bodies to provide information about their ratings, such as current rating, voltage rating, and other specifications. These markings help users identify the appropriate fuse for a particular application.
It’s important to note that the design and components of fuses can vary depending on the type, size, and application. For example, blade fuses commonly used in automotive applications may have different physical configurations compared to cartridge fuses used in industrial systems.
The fundamental purpose of all fuses, however, remains the same—to protect electrical circuits by interrupting current flow under abnormal conditions.
Details Introduction
Din Rail Fuse Holder can be applied in both AC and DC area.It is suitable for AC 50HZ/60HZ, rated insulation voltage up to 800V, Din Rail fuse holder can withstand the conventional thermal current and the expected short-circuit impulse current to 100kA. Din Rail fuse holder comply with the national standard GB/T13539.2 and the International Electrotechnical Commission standard IEC60269-2.
4 pole fuse holder RT18 Series AC and DC Din Rail Fuse Holder Parameters
| Product Item | RT18 |
| Rated Current | 32A, 63A, 125A |
| Rated voltage | 400V/690V |
| Breaking Capacity（kA） | 100kA(500VAC)/50kA(690VAC) |
| Utilization Category | AC-22B |
| Standard | IEC 60269-2 GB/T 13539.2 |
| Applications | Power control system
industry electrical equipment |
Application scenarios of din rail fuse holder?
Din rail mount Fuse holder used as shunt protection switch in three-phase AC electrical control system.
How does a fuse holder work?
RT18 series din rail mount fuse holder is suitable for AC 50Hz, rated insulation voltage to 8kV, and agreed heating current to 125A.
It is mainly used as circuit protection device in electrical lines. The wires connected to terminals at both ends of the base are formed through the conduction of the fuse.RT18 Series AC and DC Din Rail Fuse Holder
The fuse can automatically disconnect the circuit and protect the circuit. Operate the base to disconnect the circuit. It has the function of isolating power supply after polyphase feeding.
The material of the din rail fuse holder ?
How to choose din rail fuse holder model?
1）Voltage : AC or DC type
2）Poles: 1 pole,2poles,3poles or 1+Npoles,2+Npoles ,3+N poles.
3）Size :10*38,14*51 , 22*58 ,10*85,14*85
4）Indicator : with or without indicator
5）Fuse : with or without fuse
Selection table：
| Item No. | Rated Current | Note | Item No. | Rated Current | Note |
| DN56110 | 32A | 1P | DN56135 | 63A | 1P with indicator lamp |
| DN56111 | 32A | 1P+N Neutral line at right | DN56137 | 63A | 2P with indicator lamp |
| DN56112 | 32A | 2P | DN56138 | 63A | 3P with indicator lamp |
| DN56113 | 32A | 3P | DN56168 | 63A | 3P+N Neutral line at left |
| DN56114 | 32A | 3P+N Neutral line at right | DN56120 | 125A | 1P |
| DN56130 | 32A | 1P with indicator lamp | DN56121 | 125A | 1P+N Neutral line at right |
| DN56132 | 32A | 2P with indicator lamp | DN56122 | 125A | 2P |
| DN56133 | 32A | 3P with indicator lamp | DN56123 | 125A | 3P |
| DN56126 | 32A | 3P+N Neutral line at left | DN56124 | 125A | 3P+N Neutral line at right |
| DN56115 | 63A | 1P | DN56140 | 125A | 1P with indicator lamp |
| DN56116 | 63A | 1P+N Neutral line at right | DN56141 | 125A | 2P with indicator lamp |
| DN56117 | 63A | 2P | DN56143 | 125A | 3P with indicator lamp |
| DN56118 | 63A | 3P | DN56171 | 125A | 3P+N Neutral line at left |
| DN56119 | 63A | 3P+N Neutral line at right |
How to choose a correct fuse link for din rail fuse holder?
1) Voltage : AC or DC type
2) Size :10*38,14*51 , 22*58 ,10*85,14*85
3) Fuses should be tested for resistance before installation
We also have a large inventory, in case urgent demands.
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We have professional sales team and after-sales team are online 24 hours, which respond quickly and provide help at any time.RT18 Series AC and DC Din Rail Fuse Holder
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