Littelfuse 0322015.MXP Ceramic Cartridge Fuse - Equivalent & Substitute Parts

Part Overview

The Littelfuse 0322015.MXP is a 15 A ceramic cartridge fuse rated for 65 V AC/DC operation. This fast-blow fuse is designed for applications requiring reliable overcurrent protection in low-voltage circuits. The part features a 3AB, 3AG form factor (1/4" x 1-1/4") and requires a compatible fuse holder for installation. With active product status and full compliance certifications, this component remains in production and is suitable for new designs and maintenance applications.

Identifying equivalent substitute parts is necessary when primary inventory is unavailable or when sourcing from alternative distribution channels is required. Substitutes must maintain identical electrical ratings, mechanical dimensions, and performance characteristics to ensure seamless integration into existing circuit designs.

Substiute Parts

0322015.MXP

Littelfuse Inc.In Stock: 6650322015.MXP Datasheet

Current PartRFQ

0322015.HXP

Littelfuse Inc.In Stock: 13830322015.HXP Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

The Littelfuse 0322015.HXP qualifies as a parametric equivalent to the 0322015.MXP based on strict alignment of all critical electrical and mechanical parameters. Substitution eligibility is determined by the following criteria:

Electrical Parameters (Must Match Exactly):

• Current Rating: 15 A
• Voltage Rating - AC: 65 V
• Voltage Rating - DC: 65 V
• Response Time: Fast Blow
• Breaking Capacity @ Rated Voltage: 200 A AC, 1 kA DC
• Melting I²t: 90
• DC Cold Resistance: 0.0043 Ohms

Mechanical Parameters (Must Match Exactly):

• Fuse Type: Cartridge, Ceramic
• Package / Case: 3AB, 3AG, 1/4" x 1-1/4"
• Mounting Type: Requires Holder

Compliance & Environmental (Must Match Exactly):

• Approval Agencies: CE, UL
• RoHS Status: ROHS3 Compliant
• Operating Temperature Range: -55°C to 125°C

The 0322015.HXP meets all substitution criteria and is classified as a direct parametric equivalent.

Parameter Comparison

Engineering Selection Recommendations

Both the 0322015.MXP and 0322015.HXP are active products manufactured by Littelfuse Inc. and carry identical certifications (CE, UL). Both parts are ROHS3 compliant and REACH unaffected, meeting current regulatory requirements for electronic component manufacturing and distribution.

Selection between these parts should be based on availability and supply chain considerations. Since all electrical, mechanical, and compliance parameters are identical, either part can be selected without modification to circuit design or application requirements. The choice between MXP and HXP variants does not affect circuit performance, thermal behavior, or protective characteristics.

Frequently Asked Questions (FAQ)

Q: Can the 0322015.HXP be used as a direct replacement for the 0322015.MXP?

A: Yes. The 0322015.HXP is a parametric equivalent with identical current rating (15 A), voltage ratings (65 V AC/DC), response time (fast blow), package dimensions (3AB, 3AG, 1/4" x 1-1/4"), breaking capacity, and all compliance certifications. No circuit modifications are required.

Q: What is the difference between the MXP and HXP designations?

A: The MXP and HXP designations represent different packaging or distribution variants from Littelfuse Inc. All electrical and mechanical specifications are identical. The suffix does not indicate a functional or performance difference.

Q: Are both parts compatible with the same fuse holders?

A: Yes. Both parts use the 3AB, 3AG form factor with 1/4" diameter and 1-1/4" length. They are mechanically interchangeable and compatible with any holder designed for this standard package.

Q: What is the breaking capacity, and why does it matter?

A: The breaking capacity is 200 A AC and 1 kA DC at rated voltage. This specification defines the maximum fault current the fuse can safely interrupt without rupturing or creating a hazard. Both parts have identical breaking capacity.

Q: Are these fuses suitable for DC applications?

A: Yes. Both parts are rated for 65 V DC operation with a breaking capacity of 1 kA DC. The ceramic construction and fast-blow response time are suitable for DC circuit protection.

Q: What does the melting I²t value of 90 indicate?

A: The melting I²t value (90) is a thermal energy rating that characterizes the fuse's response to overcurrent. It indicates the amount of energy required to melt the fuse element. Both parts have identical I²t values, ensuring identical protective characteristics.

Q: Do these fuses require a holder for installation?

A: Yes. Both parts are cartridge fuses that require a compatible 3AB or 3AG fuse holder for installation. They cannot be used without a holder.

Q: What is the operating temperature range?

A: Both parts operate reliably between -55°C and 125°C. This range covers typical industrial and commercial applications.

Q: Are these parts RoHS compliant?

A: Yes. Both parts are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory standards for electronic components.