Littelfuse 032502.5MXP Ceramic Cartridge Fuse - Equivalent & Substitute Parts

Part Overview

The Littelfuse 032502.5MXP is a 2.5 A ceramic cartridge fuse rated for 250 V AC and 125 V DC operation. This through-hole mounted fuse is designed for circuit protection in applications requiring slow-blow response characteristics. The part is currently active in production with full regulatory compliance across multiple approval agencies. Substitute parts are identified when equivalent electrical and mechanical parameters are required for design flexibility, inventory management, or supply chain continuity.

Substiute Parts

032502.5MXP

Littelfuse Inc.In Stock: 797032502.5MXP Datasheet

Current PartRFQ

032502.5HXP

Littelfuse Inc.In Stock: 1004032502.5HXP Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

The Littelfuse 032502.5HXP is identified as a parametric equivalent to the 032502.5MXP based on identical electrical and mechanical specifications. Substitution is valid when the following key parameters match:

• Current Rating: 2.5 A
• Voltage Rating - AC: 250 V
• Voltage Rating - DC: 125 V
• Fuse Type: Cartridge, Ceramic
• Response Time: Slow Blow
• Package / Case: 3AB, 3AG, 1/4" x 1-1/4" (Axial)
• Mounting Type: Through Hole
• Breaking Capacity @ Rated Voltage: 100 A AC, 10 kA DC
• Melting I²t: 136
• Operating Temperature Range: -55°C to 125°C
• Size / Dimension: 0.275" Dia x 1.288" L (6.99 mm x 32.72 mm)
• DC Cold Resistance: 0.0835 Ohms

Both parts are manufactured by Littelfuse Inc. and belong to the 325 series. The substitute part maintains full compliance with all regulatory requirements and certifications.

Parameter Comparison

Engineering Selection Recommendations

Both the 032502.5MXP and 032502.5HXP are active production parts with identical electrical and mechanical specifications. Selection between these parts is based on availability and supply chain requirements. Both parts carry full regulatory compliance including CE, CSA, K-MARK, PSE, and UL certifications. Both are ROHS3 compliant and suitable for applications requiring ceramic cartridge fuses with 2.5 A current rating and 250 V AC / 125 V DC voltage ratings. The identical melting I²t value of 136 and breaking capacity ensure equivalent circuit protection performance in all specified operating conditions.

Frequently Asked Questions (FAQ)

Q: Can the 032502.5HXP be used as a direct replacement for the 032502.5MXP?

A: Yes. Both parts are identical in all electrical and mechanical parameters, including current rating, voltage ratings, fuse type, response time, package dimensions, and breaking capacity. Direct substitution is valid for all applications.

Q: Are there any differences in regulatory compliance between these parts?

A: No. Both parts carry identical certifications from CE, CSA, K-MARK, PSE, and UL. Both are ROHS3 compliant and REACH unaffected.

Q: Do these fuses have the same physical dimensions?

A: Yes. Both parts are 0.275" diameter by 1.288" length (6.99 mm x 32.72 mm) and use the 3AB, 3AG package format. They are fully compatible with identical through-hole mounting applications.

Q: What is the significance of the melting I²t value of 136?

A: The melting I²t value determines the thermal energy required to melt the fuse element. An identical value of 136 for both parts ensures equivalent response characteristics and protection performance in circuit applications.

Q: Are these fuses suitable for both AC and DC applications?

A: Yes. Both parts are rated for 250 V AC and 125 V DC operation with a slow-blow response time, making them suitable for applications requiring protection against temporary overcurrent conditions.

Q: What is the operating temperature range for these fuses?

A: Both parts operate across a temperature range of -55°C to 125°C, providing performance stability across industrial and commercial temperature environments.