MS325R020

Inrush Current Limiters (ICL) Overview

The MS325R020 is a radial lead inrush current limiter from the Vishay Ametherm MS32 series. It features a nominal resistance of 5 Ohms with a tolerance of ±25% and a maximum steady-state current rating of 20 A. The component supports voltage ratings of 120 VAC, 240 VAC, 480 VAC, and 680 VAC. Physical dimensions include a diameter of 31.00 mm (1.220 inches) and a width of 9 mm. It utilizes a bulk packaging format and is designed for PCB mount installation.

Inrush Current Limiters (ICL) Feature Summary

• Recognized by Underwriters Laboratories (UL) for safety compliance
• Designed to withstand high steady-state currents
• Absorbs and minimizes high input energy during startup

Inrush Current Limiters (ICL) Applications

• Power supply input stages
• Transformer inrush limiting
• Capacitive load protection

Inrush Current Limiters (ICL) Procurement Notes

Verify the specific ordering suffix against the manufacturer datasheet to ensure correct lead configuration. Standard parts may require specific lead types such as kinked leads. Confirm RoHS compliance status and UL recognition details directly with the supplier or official documentation before finalizing procurement orders.

Inrush Current Limiters (ICL) Selection Notes

Select this component based on the required 5 Ohm resistance and 20 A steady-state current capacity. Ensure the physical diameter of 31.00 mm fits the available PCB space. Verify that the maximum recommended energy rating of 300 Joules is sufficient for the specific application's capacitive load and voltage conditions.

Inrush Current Limiters (ICL) Part Context

This part belongs to the MS32 series of NTC thermistor-based inrush current limiters manufactured by Vishay Ametherm. The series provides solutions for protecting electronic equipment from high initial charging currents. These components are widely used in industrial and commercial power applications requiring reliable surge suppression.

Inrush Current Limiters (ICL) Replacement Considerations

Cross-reference with other MS32 series variants if different resistance or current ratings are needed. Verify pin compatibility and thermal characteristics when substituting with similar NTC limiters from other manufacturers.

Inrush Current Limiters (ICL) FAQ

What is the maximum recommended energy rating for the MS325R020?

The maximum recommended energy rating is 300 Joules.

Is the MS325R020 UL recognized?

Yes, the component is recognized by Underwriters Laboratories (UL).