B57213P0800M301

Inrush Current Limiters (ICL) are specialized resistors used to limit the inrush current created by electrical capacitors when powered on. The B57213P0800M301 is a two-terminal, high-quality ICL designed specifically for Resistive-Capacitive (RC) loads. Its application field and working principle are briefly outlined below.

Application Field

The B57213P0800M301 is a hermetically sealed, non-inductive ICL that offers an ideal limit on inrush current in a variety of applications. It can be used to protect small capacitive loads such as electronic ballasts, motor control circuits, and personal computers. It is also suitable for a wide range of industrial applications including power supply switches, arc welders, and medical instruments.

Working Principle

The B57213P0800M301 works by controlling the amount of current that passes through the ICL when the capacitor is first powered on. The current is limited to a predetermined safe level to prevent injury to equipment and personnel. To do this, the ICL\'s resistance is increased as the current increases. This increases both the voltage drops and reduces the current through the load. As a result, the allowable inrush current is limited to a safe level.

The B57213P0800M301 is designed to provide a current limiting capability up to 20A peak. For applications that require more than 20A, a higher rated ICL can be used. The ICL also has a very short response time so that peak currents are limited before they can cause any damage to the circuit or components.

As an added safety measure, the B57213P0800M301 has a fuse installed inside the ICL which will open if the current exceeds the safe limit. This will instantly cut off the power and prevent further damage. The fuse can be easily replaced in case it has been damaged due to over current.

In conclusion, the B57213P0800M301 is a high-quality, two-terminal ICL designed for RC loads. It can be used in a variety of applications to limit inrush current and protect equipment and personnel from damage. The ICL has a fast response time and an integrated safety fuse, making it an ideal solution for protecting sensitive circuits from excessive current.