4D16

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4D16 Application Field and Working Principle

4D16, a type of electrical specialty fuse, is widely used in the electrical and electronic industries and designed for the over-current protection of power systems. It has superior current limiting capability and provides superior protection to meet the toughest standards. In this article, we\'ll discuss the application fields of 4D16 and its working principle.

Application Field:

The 4D16 is a dual element, time-delay, current-limiting, heavy-duty cartridge fuse that is available in 3 frame sizes. They are designed for use in high-power industrial, motor control, and motor start applications, for the protection of semiconductors, process control systems, motor controls, transformers, generators, buses, or any other equipment requiring high inrush current protection. They provide superior current limiting performance and are available with a wide range of current ratings from 50 to 2000 amps.

The 4D16 is suitable for the protection of low-voltage power systems rated below 600 volts, and for the protection of semiconductor components rated up to 600 volts. The 4D16 is also UL listed for power systems rated up to 600 volts; UL Listed 527. Therefore, these fuses can be used in virtually any electrical or electronic application where there is a need for current limit protection.

Working Principle:

The 4D16 fuse is equipped with two independent elements: the fast-acting element and the time-delay element. The fast-acting element is designed to provide instantaneous protection when the current exceeds the rated current of the fuse. This element is very responsive and will instantly open or “blow” the circuit if it detects an over-current condition.

The time-delay element is designed to provide additional protection from inrush current and temporary overload conditions. It provides a slight time delay allowing the full current to pass through the fuse before blowing. This allows the power system to protect itself from inrush current and temporary overload conditions.

The 4D16 fuses are also designed with a dual-action element that protects against both normal duty and heavy inrush current conditions. The dual-action element is designed to open the fuse circuit if either the fast-acting element or the time-delay element senses an overload condition. This provides superior protection and eliminates the need for a separate fast-blow fuse and a time-delay fuse.

The 4D16 is UL listed and CSA approved for high-power applications, up to 2000 amps. This is a significant capability for fuses that are often used in power systems that require protection from high levels of current. The 4D16 also provides superior protection from overvoltage conditions, which are caused by sudden or sustained high levels of current.

Conclusion:

The 4D16 is an extremely versatile electrical specialty fuse, capable of providing superior protection in high-power applications from both inrush current and temporary overload conditions. It also provides superior protection from overvoltage conditions, making it ideal for power systems that require high levels of current protection. The 4D16 is UL listed and CSA approved, and is available in a wide range of current ratings up to 2000 amps.

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