Littelfuse 0225004.MXUP Fuse - Equivalent & Substitute Parts

Part Overview

The Littelfuse 0225004.MXUP is a 4 A, 125 V AC/DC fast-blow glass cartridge fuse in 2AG package format (5mm x 15mm). This fuse is designed for circuit protection in applications requiring fast response to overcurrent conditions. The part is actively manufactured and maintains full compliance with international safety standards including CE, CSA, PSE, and UL certifications. Substitute parts are identified when equivalent electrical and mechanical parameters are maintained across the same product series and package specification.

Substiute Parts

0225004.MXUP

Littelfuse Inc.In Stock: 18220225004.MXUP Datasheet

Current PartRFQ

0225004.HXUP

Littelfuse Inc.In Stock: 12810225004.HXUP Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 0225004.MXUP is determined by strict equivalence across the following critical parameters:

• Current Rating: 4 A (exact match required)
• Voltage Rating: 125 V AC (exact match required)
• Response Time: Fast Blow (exact match required)
• Package / Case: 2AG, 5mm x 15mm (exact match required)
• Fuse Type: Cartridge, Glass (exact match required)
• Breaking Capacity: 100 A (exact match required)
• Melting I²t: 9.4 (exact match required)

The substitute part 0225004.HXUP meets all these criteria and is therefore electrically and mechanically interchangeable with the main part number within the Littelfuse 225 series.

Parameter Comparison

Engineering Selection Recommendations

Both the 0225004.MXUP and 0225004.HXUP are active products from Littelfuse Inc. with identical electrical and mechanical specifications. Selection between these part numbers may be based on inventory availability and supply chain considerations. Both parts maintain full compliance with CE, CSA, PSE, and UL certifications, and both are ROHS3 compliant. The interchangeability is complete for all circuit protection applications requiring a 4 A, 125 V AC/DC fast-blow glass cartridge fuse in 2AG package format.

Frequently Asked Questions (FAQ)

Q: Can 0225004.HXUP be used as a direct replacement for 0225004.MXUP?

A: Yes. Both parts are electrically and mechanically identical across all specified parameters including current rating, voltage rating, response time, package dimensions, breaking capacity, and thermal characteristics.

Q: Are there any differences in certification or compliance between these parts?

A: No. Both parts carry identical certifications (CE, CSA, PSE, UL) and maintain the same RoHS3 compliance status.

Q: What determines if a fuse can substitute for the 0225004.MXUP?

A: A substitute fuse must match all critical parameters: 4 A current rating, 125 V AC voltage rating, fast-blow response time, 2AG package format (5mm x 15mm), 100 A breaking capacity, and 9.4 melting I²t value.

Q: Does the packaging type (Bulk) affect substitution eligibility?

A: No. Packaging type refers to order quantity and delivery format, not electrical or mechanical function. Substitution is determined solely by component specifications.

Q: Can these fuses be used in both AC and DC circuits?

A: Yes. Both parts are rated for 125 V AC/DC operation and are suitable for either circuit type within the specified voltage and current parameters.