Littelfuse 0672008.MXEP Fuse - Equivalent & Substitute Parts

Part Overview

The Littelfuse 0672008.MXEP is an 8A 250VAC glass cartridge fuse with axial through-hole mounting. This component is classified as obsolete, making equivalent substitute parts necessary for ongoing system maintenance and new design implementations. The glass construction and fast-blow response time are critical functional characteristics for circuit protection applications requiring rapid fault isolation.

Substiute Parts

0672008.MXEP

Littelfuse Inc.In Stock: 9730672008.MXEP Datasheet

Current PartRFQ

0874008.MXEP

Littelfuse Inc.In Stock: 27770874008.MXEP Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 0672008.MXEP is determined by matching the following critical electrical and mechanical parameters:

• Current Rating: 8 A (exact match required)
• Voltage Rating: 250 V AC (exact match required)
• Response Time: Fast Blow (functional equivalence)
• Mounting Configuration: Through Hole, Axial cartridge format
• Breaking Capacity: 50 A @ Rated Voltage (minimum threshold)
• Approval Certifications: UL or cULus compliance

The primary distinction between the main part and its substitute lies in the cartridge material composition: glass versus ceramic. Both materials satisfy the electrical performance requirements while maintaining compatibility with the same physical mounting footprint and circuit protection specifications.

Parameter Comparison

Engineering Selection Recommendations

The Littelfuse 0874008.MXEP ceramic cartridge fuse is the direct substitute for the obsolete 0672008.MXEP glass cartridge fuse. Both components maintain identical electrical ratings (8A, 250VAC), response characteristics (Fast Blow), and mechanical compatibility (Through Hole, Axial mounting).

The 0874008.MXEP offers the advantage of active product status with established supply chain availability (2725 units in stock versus 962 for the obsolete part). The ceramic construction provides a defined operating temperature range (-55°C to 125°C), whereas the original glass part does not specify temperature limits. Both components carry equivalent regulatory compliance: the original holds CSA and UL approvals, while the substitute carries cULus certification, which encompasses both Canadian and US standards.

The ceramic substitute exhibits a higher melting I²t value (43.97 versus 33.2), indicating slightly different thermal response characteristics within the fast-blow classification. This difference remains within acceptable parameters for equivalent circuit protection performance at the specified 8A rating.

Frequently Asked Questions (FAQ)

Q: Can the 0874008.MXEP ceramic fuse directly replace the 0672008.MXEP glass fuse?

A: Yes. Both components share identical current ratings (8A), voltage ratings (250VAC), response times (Fast Blow), mounting configurations (Through Hole, Axial), and breaking capacities (50A). The ceramic construction of the substitute does not affect electrical compatibility or circuit protection function.

Q: What is the physical size difference between these two fuses?

A: The glass fuse measures 0.154" diameter × 0.433" length (3.90mm × 11.00mm). The ceramic substitute measures 0.142" diameter × 0.394" length (3.60mm × 10.00mm). Both fit the same axial cartridge mounting footprint, though the ceramic version is slightly more compact.

Q: Are there regulatory compliance differences?

A: The original glass fuse carries CSA and UL approvals. The ceramic substitute carries cULus certification, which satisfies both Canadian and US regulatory requirements. Both components are ROHS3 compliant and REACH unaffected.

Q: Why does the ceramic fuse have a higher melting I²t value?

A: The melting I²t (33.2 for glass versus 43.97 for ceramic) reflects material-specific thermal characteristics. Both values maintain fast-blow response classification and do not affect the 8A circuit protection function. The difference is inherent to ceramic versus glass construction and remains within acceptable engineering tolerances for this application.

Q: Is the ceramic substitute available in the same packaging?

A: The original glass fuse is listed as non-standard packaging. The ceramic substitute is available in bulk packaging, reflecting its active product status and current manufacturing availability.