Littelfuse 0324003.MXP Ceramic Fuse - Equivalent & Substitute Parts

Part Overview

The Littelfuse 0324003.MXP is a 3 A ceramic cartridge fuse rated for 250 V AC and 125 V DC operation. This through-hole mounted component is designed for fast-blow response characteristics and is certified to multiple international standards including UL, CE, CSA, K-MARK, and PSE. The part maintains active product status with robust inventory availability. Substitute parts are identified when identical electrical specifications, mechanical dimensions, and approval certifications are maintained across alternative packaging or manufacturing variants.

Substiute Parts

0324003.MXP

Littelfuse Inc.In Stock: 11140324003.MXP Datasheet

Current PartRFQ

0324003.HXP

Littelfuse Inc.In Stock: 8420324003.HXP Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 0324003.MXP is determined by strict equivalence across the following critical parameters:

• Current Rating: 3 A (exact match required)
• Voltage Ratings: 250 V AC and 125 V DC (exact match required)
• Response Time: Fast Blow (exact match required)
• Package / Case: 3AB, 3AG, 1/4" x 1-1/4" Axial (exact match required)
• Fuse Type: Cartridge, Ceramic (exact match required)
• Mounting Type: Through Hole (exact match required)
• Breaking Capacity: 100 A AC, 10 kA DC (exact match required)
• Melting I²t: 14.6 (exact match required)
• Approval Certifications: CE, CSA, K-MARK, PSE, UL (all certifications required)
• RoHS Compliance: ROHS3 Compliant (exact match required)

The substitute part 0324003.HXP meets all these criteria and is therefore a direct parametric equivalent.

Parameter Comparison

Engineering Selection Recommendations

Both the 0324003.MXP and 0324003.HXP are active products manufactured by Littelfuse Inc. and carry identical electrical, mechanical, and certification specifications. Selection between these parts may be based on inventory availability and packaging format. The 0324003.MXP currently maintains 1084 pieces in stock, while the 0324003.HXP maintains 786 pieces. Both parts satisfy all international compliance requirements including UL, CE, CSA, K-MARK, and PSE certifications, and both are ROHS3 compliant. Either part is suitable for direct substitution in applications requiring a 3 A, 250 V AC / 125 V DC ceramic cartridge fuse with fast-blow response characteristics.

Frequently Asked Questions (FAQ)

Q: Can the 0324003.HXP be used as a direct replacement for the 0324003.MXP?

A: Yes. The 0324003.HXP is a parametric equivalent with identical current rating, voltage ratings, response time, package dimensions, breaking capacity, and all international certifications. Direct substitution is supported.

Q: Are there any differences in mechanical compatibility between these parts?

A: No. Both parts share identical package specifications (3AB, 3AG, 1/4" x 1-1/4" Axial) and physical dimensions (0.275" Dia x 1.288" L). They are mechanically interchangeable in through-hole mounting applications.

Q: Do both parts meet the same regulatory and compliance standards?

A: Yes. Both the 0324003.MXP and 0324003.HXP carry identical approval certifications: CE, CSA, K-MARK, PSE, and UL. Both are ROHS3 compliant and REACH unaffected.

Q: What is the significance of the melting I²t value of 14.6?

A: The melting I²t value defines the thermal energy required to melt the fuse element. An identical value of 14.6 across both parts ensures identical thermal response characteristics and protection performance in the circuit.

Q: Are there any differences in electrical performance between these parts?

A: No. Both parts have identical DC cold resistance (0.0432 Ohms), breaking capacity (100 A AC, 10 kA DC), and operating temperature range (-55°C ~ 125°C). Electrical performance is equivalent.