Littelfuse 0322002.MXP Ceramic Fuse Cartridge – Equivalent & Substitute Parts

Part Overview

The Littelfuse 0322002.MXP is a 2 A, 250 V AC / 125 V DC ceramic fuse cartridge designed for fast-blow protection in electrical circuits. This component requires a compatible holder (3AB, 3AG format) and measures 0.250" diameter × 1.250" length. The part is classified as obsolete, making identification of active equivalent alternatives essential for ongoing system maintenance and new designs requiring this protection specification.

Substiute Parts

0322002.MXP

Littelfuse Inc.In Stock: 7770322002.MXP Datasheet

Current PartRFQ

0314002.HXP

Littelfuse Inc.In Stock: 19130314002.HXP Datasheet

Parametric EquivalentRFQ

0314002.MXP

Littelfuse Inc.In Stock: 16300314002.MXP Datasheet

Parametric EquivalentRFQ

0314002.VXP

Littelfuse Inc.In Stock: 9750314002.VXP Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the obsolete 0322002.MXP is determined by strict equivalence across the following critical parameters:

• Current Rating: 2 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" × 1-1/4" (exact match required)
• Operating Temperature Range: −55°C to 125°C (exact match required)
• Physical Dimensions: 0.250" Dia × 1.250" L (exact match required)

All three substitute parts (0314002.HXP, 0314002.MXP, 0314002.VXP) meet these criteria and are manufactured by Littelfuse Inc. in the active Series 314 line. These parts are direct functional replacements for the obsolete Series 322 part.

Parameter Comparison

Engineering Selection Recommendations

All three substitute parts (0314002.HXP, 0314002.MXP, 0314002.VXP) are functionally equivalent to the obsolete 0322002.MXP and are suitable for direct replacement in applications requiring 2 A, 250 V AC / 125 V DC ceramic fuse cartridge protection.

The substitute parts offer enhanced specifications compared to the main part:

• Breaking Capacity: Substitute parts provide 10 kA DC breaking capacity versus 100 A for the main part, offering superior fault protection capability.
• Regulatory Compliance: Substitute parts carry expanded approval certifications (CE, CSA, PSE, UL) compared to the main part (CE, cULus, PSE), providing broader global compliance coverage.
• Product Status: All substitute parts are active products in the Littelfuse Series 314 line, ensuring long-term availability and supply chain continuity.

Selection among the three substitute parts may be based on packaging requirements (all available in bulk) and inventory availability.

Frequently Asked Questions (FAQ)

Q: Can 0314002.HXP, 0314002.MXP, or 0314002.VXP be used as direct replacements for 0322002.MXP?

A: Yes. All three parts are parametrically equivalent across current rating, voltage ratings, fuse type, response time, package format, and operating temperature range. Physical dimensions and holder compatibility (3AB, 3AG) are identical.

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

A: The three substitute parts (0314002.HXP, 0314002.MXP, 0314002.VXP) are parametrically identical. Differences exist only in packaging designation and current inventory levels. All are manufactured by Littelfuse Inc. in the Series 314 line and carry identical electrical and mechanical specifications.

Q: Why do the substitute parts have higher DC breaking capacity (10 kA) than the main part (100 A)?

A: The substitute parts represent an enhanced design iteration within the Littelfuse product line. The increased DC breaking capacity provides improved fault protection performance while maintaining all other electrical and mechanical parameters required for direct substitution.

Q: Are the substitute parts compatible with existing 3AB and 3AG fuse holders?

A: Yes. The substitute parts maintain the identical 0.250" diameter × 1.250" length physical specification and are designed for 3AB and 3AG holder compatibility, ensuring mechanical and electrical fit in existing installations.

Q: What regulatory certifications do the substitute parts carry?

A: The substitute parts carry CE, CSA, PSE, and UL certifications. The main part carries CE, cULus, and PSE certifications. The expanded certification set on substitute parts provides broader global compliance coverage.

Q: Is the obsolete 0322002.MXP still available?

A: The 0322002.MXP is classified as obsolete but currently shows 698 pieces in stock. However, the active substitute parts (0314002.HXP, 0314002.MXP, 0314002.VXP) offer superior long-term availability and are recommended for new designs and ongoing system maintenance.