Littelfuse 0224004.MXUP Glass Cartridge Fuse - Equivalent & Substitute Parts

Part Overview

The Littelfuse 0224004.MXUP is a 4A 250VAC fast-blow glass cartridge fuse in 2AG package format (5mm x 15mm axial). This component is designed for circuit protection in applications requiring fast response to overcurrent conditions. The part maintains active product status with full compliance to international safety standards including CE, CSA, PSE, and UL certifications. Substitute parts are identified when equivalent electrical and mechanical specifications are required for applications operating at different voltage ratings or when inventory constraints necessitate alternative sourcing from the same manufacturer series.

Substiute Parts

0224004.MXUP

Littelfuse Inc.In Stock: 11200224004.MXUP Datasheet

Current PartRFQ

0224004.HXUP

Littelfuse Inc.In Stock: 8440224004.HXUP Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 0224004.MXUP is determined by the following critical parameters:

Mandatory Matching Parameters:

• Current Rating: 4 A (must be identical)
• Fuse Type: Cartridge, Glass (must be identical)
• Package / Case: 2AG, 5mm x 15mm (Axial) (must be identical)
• Response Time: Fast Blow (must be identical)
• Mounting Type: Through Hole (must be identical)
• Breaking Capacity: 100A @ Rated Voltage (must be identical)
• Melting I²t: 9.4 (must be identical)
• Operating Temperature Range: -55°C ~ 125°C (must be identical)
• DC Cold Resistance: 0.024 Ohms (must be identical)
• Manufacturer Series: 224 (must be identical)

Allowable Variation Parameters:

• Voltage Rating (AC): May vary based on application requirements

The substitute part 0224004.HXUP meets all mandatory matching criteria while operating at a reduced voltage rating of 125VAC, making it suitable for applications where lower voltage protection is required within the same mechanical and electrical framework.

Parameter Comparison

Engineering Selection Recommendations

Both the 0224004.MXUP and 0224004.HXUP maintain active product status with identical compliance certifications (CE, CSA, PSE, UL) and RoHS3 compliance. Selection between these parts is determined by the circuit voltage requirement:

• 0224004.MXUP (250VAC): Select for applications operating at or below 250VAC where the higher voltage rating provides margin for transient conditions.
• 0224004.HXUP (125VAC): Select for applications operating at or below 125VAC. This part is suitable for lower-voltage circuits and provides equivalent protection characteristics within its voltage specification.

Both parts share identical mechanical dimensions, current ratings, response characteristics, and thermal specifications, ensuring functional equivalence within their respective voltage domains. The choice between them is determined solely by the maximum AC voltage present in the target application circuit.

Frequently Asked Questions (FAQ)

Q: Can 0224004.HXUP be used in place of 0224004.MXUP?

A: The 0224004.HXUP can substitute for the 0224004.MXUP only in applications where the circuit voltage does not exceed 125VAC. Both parts share identical current ratings (4A), response time (fast blow), package format (2AG), and all other electrical and mechanical specifications. Using a lower-rated voltage fuse in a higher-voltage circuit may result in nuisance tripping or inadequate protection.

Q: Can 0224004.MXUP be used in place of 0224004.HXUP?

A: Yes. The 0224004.MXUP can be used in applications designed for the 0224004.HXUP. The higher voltage rating (250VAC) is compatible with 125VAC circuits and provides equivalent protection performance.

Q: Are these parts mechanically interchangeable?

A: Yes. Both parts use the identical 2AG package format with 5mm x 15mm (axial) dimensions and through-hole mounting. They are mechanically interchangeable in any fuse holder designed for 2AG cartridge fuses.

Q: What is the significance of the melting I²t value of 9.4?

A: The melting I²t value defines the thermal energy required to melt the fuse element. Both parts share this identical value, ensuring equivalent response characteristics and protection behavior at their respective voltage ratings.

Q: Do both parts have the same operating temperature range?

A: Yes. Both the 0224004.MXUP and 0224004.HXUP operate across the identical temperature range of -55°C to 125°C, ensuring consistent performance across environmental conditions.

Q: What certifications apply to both parts?

A: Both parts carry CE, CSA, PSE, and UL certifications, confirming compliance with international safety standards for circuit protection devices.