3404.0021.11 Application Field and Working Principle

The 3404.0021.11 fuses are small, self-contained, over-current protection devices specifically designed for industrial applications in automation technology. These versatile fuses are called “temporary overcurrent protection devices” which respond to a sustained overcurrent in order to provide protection to electrical apparatus and components. They can be installed in all types of switching and switching-free distribution boards.

The 3404.0021.11 fuses are designed to meet IEC 60269-2 (VDE 0660) standard, making them terminal type, 10x38mm size, rated low voltage (500 V), and fitted with a ceramic body. The operating temperature ranges from -40 to +85°C. It is also equipped with a silver-plated copper contact element, a fiberglass reinforced insulation, as well as a transparent cover.

The working principle behind the 3404.0021.11 fuses is based on thermal and electrical characteristics. It uses a heat-sensitive element to initiate the operation of the fuses in response to an overcurrent. Once the current reaches its rated limit, the fuse heats up and melts the link, thus creating an open circuit, thus disconnecting the electricity.

The 3404.0021.11 fuses are extremely reliable in their operation and are suitable for the most demanding industrial applications, such as those in control cabinets and for motor protection. They are also designed to easily withstand the toughest environmental conditions, including vibrations, shock, dust, dirt, and humidity. Additionally, they come with a long expected life span, making them ideal for long-term applications.

In conclusion, the 3404.0021.11 fuses are designed for a wide range of applications, from motor protection in automation technology to low-voltage distribution boards. They come with a ceramic body and silver-plated contact element, as well as a fiberglass reinforced insulation and transparent cover. They use a thermal and electrical characteristics-based system in order to initiate their operation in response to a sustained overcurrent, providing reliable and long-term protection for electrical apparatuses and components.