Littelfuse 0324030.MX52LP Ceramic Fuse - Equivalent & Substitute Parts

Part Overview

The Littelfuse 0324030.MX52LP is a 30 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 housed in a 3AB/3AG package format measuring 1/4" x 1-1/4" (6.99mm x 32.72mm). The part maintains active product status with full compliance to CE, PSE, and UL approval agencies. Equivalent substitute parts are available to support procurement flexibility, inventory management, and supply chain continuity for this critical circuit protection component.

Substiute Parts

0324030.MX52LP

Littelfuse Inc.In Stock: 14370324030.MX52LP Datasheet

Current PartRFQ

0324030.HXP

Littelfuse Inc.In Stock: 9350324030.HXP Datasheet

Parametric EquivalentRFQ

0324030.MXP

LittelfuseIn Stock: 249200324030.MXP Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 0324030.MX52LP is determined by strict equivalence across the following critical parameters:

• Current Rating: 30 A (exact match required)
• Voltage Rating - AC: 250 V (exact match required)
• Voltage Rating - DC: 125 V (exact match required)
• Fuse Type: Cartridge, Ceramic (exact match required)
• Response Time: Fast Blow (exact match required)
• Package / Case: 3AB, 3AG, 1/4" x 1-1/4" (Axial) (exact match required)
• Breaking Capacity @ Rated Voltage: 100A AC, 400A DC (exact match required)
• Melting I²t: 2490 (exact match required)
• Operating Temperature Range: -55°C ~ 125°C (exact match required)
• DC Cold Resistance: 0.00182 Ohms (exact match required)
• Mounting Type: Through Hole (exact match required)
• RoHS Status: ROHS3 Compliant (exact match required)

All identified substitute parts meet these criteria and are manufactured by Littelfuse Inc. within the 324 series product line.

Parameter Comparison

Engineering Selection Recommendations

All three parts—0324030.MX52LP, 0324030.HXP, and 0324030.MXP—are parametrically equivalent and maintain active product status. Selection between these parts may be based on:

• Approval agency requirements: 0324030.MX52LP carries CE, PSE, and UL certifications. 0324030.HXP and 0324030.MXP both carry CE, K-MARK, PSE, and UL certifications, providing additional K-MARK compliance.
• Inventory availability: 0324030.MXP offers the highest stock level at 24,810 pieces, followed by 0324030.MX52LP at 1,343 pieces, and 0324030.HXP at 861 pieces.
• All parts comply with ROHS3 requirements and are REACH unaffected.

Frequently Asked Questions (FAQ)

Q: Can 0324030.HXP or 0324030.MXP be used as direct replacements for 0324030.MX52LP?

A: Yes. All three parts are parametrically equivalent across current rating, voltage ratings, fuse type, response time, package format, breaking capacity, melting I²t, operating temperature range, DC cold resistance, and mounting type. Direct substitution is electrically and mechanically valid.

Q: What is the significance of the K-MARK certification on 0324030.HXP and 0324030.MXP?

A: K-MARK is a Korean certification mark. If your application requires Korean market compliance or operates under Korean regulatory standards, 0324030.HXP or 0324030.MXP are the appropriate selections. The 0324030.MX52LP does not carry this certification.

Q: Are there any differences in the physical package dimensions between these parts?

A: No. All three parts use the identical 3AB/3AG package format with dimensions of 1/4" x 1-1/4" (6.99mm x 32.72mm). They are mechanically interchangeable in through-hole mounting applications.

Q: Which part should I select if inventory is a primary concern?

A: 0324030.MXP has the highest available inventory at 24,810 pieces. This part is suitable for high-volume procurement and supply chain continuity.

Q: Do all three parts meet RoHS compliance requirements?

A: Yes. All three parts are ROHS3 compliant and REACH unaffected, meeting current environmental and hazardous substance regulations.