R220953

Overview

The R220953 is a cylindrical glass-encased fuse manufactured by Mersen. It features a 1 A current rating and operates at a 250 VAC voltage level. The device provides fast-acting (fast-blow) protection characteristics to safeguard circuits against overcurrent conditions. Designed for through-hole mounting, it utilizes standard axial leads for PCB integration. The unit complies with UL and IEC safety standards, ensuring reliable performance in industrial and commercial electronic applications requiring precise circuit interruption.

Feature Summary

• Fast-acting response characteristic for rapid circuit interruption during fault conditions
• Glass tube construction providing visual inspection capability of the internal element
• Compliance with international safety standards including UL and IEC certifications

Applications

• Industrial control panels and machinery protection
• Commercial office equipment and power supplies
• Consumer electronics and home appliances
• Telecommunications infrastructure components

Procurement Notes

Verify that the specific order matches the exact 1 A / 250 VAC specification required for the target circuit design. Confirm compliance with relevant regional safety regulations such as UL or IEC before finalizing procurement. Ensure proper handling procedures are followed to maintain the integrity of the glass enclosure and axial leads during installation.

Selection Notes

Select this component when a compact, fast-acting fuse is required for low-voltage AC circuits. The 1 A rating suits sensitive electronic loads where immediate disconnection is necessary to prevent damage. Consider the physical dimensions and lead spacing to ensure compatibility with the printed circuit board layout and available mounting space within the equipment chassis.

Part Context

This part belongs to Mersen's range of general-purpose fuses designed for electronic protection. The series offers standardized dimensions and electrical ratings suitable for widespread adoption across various industries. Mersen manufactures these components to meet rigorous quality and safety requirements, ensuring consistent performance and reliability in critical protection roles.

Replacement Considerations

Substitute parts must match the 1 A current rating, 250 VAC voltage rating, and fast-acting time-current characteristics. Verify that alternative fuses share compatible physical dimensions and terminal configurations to fit existing board layouts without modification.