Littelfuse 0332007.MXP Ceramic Cartridge Fuse Equivalent & Substitute Parts

Part Overview

The Littelfuse 0332007.MXP is a 7 A ceramic cartridge fuse rated for 250 V AC and 125 V DC operation with fast-blow response characteristics. This component is classified as obsolete, making equivalent substitute parts necessary for ongoing system maintenance and new designs. The fuse is designed for use in 3AB, 3AG holder configurations with dimensions of 0.250" diameter by 1.250" length (6.35mm x 31.75mm).

Substiute Parts

0332007.MXP

Littelfuse Inc.In Stock: 9880332007.MXP Datasheet

Current PartRFQ

0314007.MXP

Littelfuse Inc.In Stock: 20310314007.MXP Datasheet

MFR RecommendedRFQ

0314007.HXP

Littelfuse Inc.In Stock: 11090314007.HXP Datasheet

Parametric EquivalentRFQ

0314007.VXP

Littelfuse Inc.In Stock: 9540314007.VXP Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the 0332007.MXP is determined by strict equivalence across the following critical parameters:

• Current Rating: 7 A (exact match required)
• Voltage Rating - AC: 250 V (exact match required)
• Voltage Rating - DC: 125 V (exact match required)
• Response Time: Fast Blow (exact match required)
• Package / Case: 3AB, 3AG, 1/4" x 1-1/4" (exact match required)
• Size / Dimension: 0.250" Dia x 1.250" L (exact match required)
• Fuse Type: Cartridge, Ceramic (exact match required)
• Operating Temperature Range: -55°C ~ 125°C (exact match required)

All substitute parts listed below meet these criteria. The primary distinction between the main part and substitutes is product status: the 0332007.MXP is obsolete, while substitute parts are active production items from the Littelfuse 314 series.

Parameter Comparison

Engineering Selection Recommendations

The Littelfuse 314 series parts (0314007.MXP, 0314007.HXP, 0314007.VXP) are direct functional equivalents to the obsolete 0332007.MXP. All three substitute parts maintain identical electrical ratings and mechanical compatibility.

Selection among the three active substitutes should be based on:

• Approval agency requirements for your application: 0314007.MXP and 0314007.HXP carry CSA and K-MARK certifications; 0314007.VXP carries KC certification in addition to CSA and K-MARK
• Availability and inventory status: 0314007.MXP (1954 pcs), 0314007.HXP (1035 pcs), 0314007.VXP (896 pcs)
• REACH compliance status: All three substitutes are REACH Unaffected

The 314 series substitutes provide enhanced breaking capacity (750A AC, 10kA DC versus 100A) and broader regulatory approvals compared to the obsolete 332 series part, making them suitable for direct replacement in existing designs.

Frequently Asked Questions (FAQ)

Q: Can I directly replace 0332007.MXP with any of the 314 series parts?

A: Yes. The 0314007.MXP, 0314007.HXP, and 0314007.VXP are direct functional equivalents. All maintain identical current ratings (7 A), voltage ratings (250 V AC / 125 V DC), response time (fast blow), and physical dimensions (0.250" Dia x 1.250" L). They are mechanically and electrically compatible with existing 3AB and 3AG holder configurations.

Q: What is the difference between the three substitute parts?

A: The three parts are functionally identical in terms of electrical performance and physical dimensions. The primary differences are regulatory approvals: 0314007.MXP and 0314007.HXP include CSA and K-MARK certifications, while 0314007.VXP includes KC certification. Selection should be based on your application's specific regulatory requirements.

Q: Why do the 314 series parts have higher breaking capacity than the 332 series?

A: The 314 series represents a newer design generation with improved performance characteristics. The higher breaking capacity (750A AC, 10kA DC versus 100A) reflects enhanced internal construction while maintaining the same external dimensions and electrical ratings.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. The main part (0332007.MXP) and all three substitute parts (0314007.MXP, 0314007.HXP, 0314007.VXP) are ROHS3 compliant.

Q: What holder types are compatible with these fuses?

A: All parts in this comparison use the 3AB and 3AG holder configurations. The physical dimensions (0.250" diameter x 1.250" length) are identical across all parts, ensuring compatibility with existing holder assemblies.

Q: Does the difference in DC cold resistance affect circuit performance?

A: The DC cold resistance values (0.0108 Ohms for 0332007.MXP versus 0.0187 Ohms for 314 series parts) reflect design differences between the 332 and 314 series. Both values are within acceptable ranges for ceramic cartridge fuses in this current class and do not affect functional compatibility in standard applications.