0ZRE0040FF2B

Ptc Resettable Fuses Overview

The Bel Fuse 0ZRE0040FF2B is a polymeric PTC resettable fuse designed for through-hole radial mounting. It features a hold current of 400 mA and a trip current of 800 mA, ensuring reliable circuit protection against overcurrent conditions. The component supports a maximum voltage rating of 240 VAC or 120 VDC, making it suitable for various power supply applications. With a low initial resistance of 1.29 mOhms, it minimizes power loss during normal operation. The device operates within a temperature range of -40°C to +85°C and offers a high fault current rating of 5.5 A.

Ptc Resettable Fuses Feature Summary

• Provides automatic circuit recovery after fault clearance without manual replacement
• Offers dual voltage ratings for AC and DC applications up to 240 VAC
• Features low initial resistance to reduce power dissipation in normal operation
• Designed with radial leads for easy through-hole PCB integration

Ptc Resettable Fuses Applications

• Consumer electronics power input protection
• Computer peripheral circuit safeguarding
• Telecommunications equipment overcurrent protection
• Industrial control system circuit defense

Ptc Resettable Fuses Procurement Notes

Verify the specific suffix FF2B corresponds to the required tape and reel packaging configuration as indicated by distributor listings. Confirm that the 240V AC rating aligns with your system's peak voltage requirements. Ensure the radial lead spacing matches your PCB footprint design constraints before finalizing procurement orders.

Ptc Resettable Fuses Selection Notes

Select this component when a 400 mA hold current is required for circuits operating at voltages up to 240 VAC. Consider the 1.29 mOhms resistance value for thermal management calculations. The radial package style is appropriate for standard through-hole assembly processes. Evaluate the 5.5 A maximum fault current capability against potential short-circuit scenarios in the target application.

Ptc Resettable Fuses Part Context

This part belongs to the Bel Fuse 0ZRE series of polymeric PTC resettable fuses. The series is characterized by radial leaded construction and high voltage ratings compared to lower-voltage counterparts. It serves as a reusable alternative to traditional fusible links in applications requiring frequent maintenance access or automated reset capabilities.

Ptc Resettable Fuses Replacement Considerations

Direct substitutes include other Bel Fuse 0ZRE series parts with identical electrical parameters but different packaging options such as bulk or cut tape. Cross-brand replacements must match the 400 mA hold current, 240 VAC max voltage, and radial form factor to ensure functional compatibility.