Littelfuse 0322020.MXP Ceramic Fuse - Equivalent & Substitute Parts

Part Overview

The Littelfuse 0322020.MXP is a 20A ceramic cartridge fuse rated for 65V AC/DC operation. This fast-blow fuse is designed for applications requiring reliable overcurrent protection in industrial and commercial equipment. The part is actively manufactured and maintained in production status, with 1027 units currently in stock. Substitute parts are identified when equivalent electrical and mechanical parameters are required for component procurement, inventory management, or supply chain continuity.

Substiute Parts

0322020.MXP

Littelfuse Inc.In Stock: 10750322020.MXP Datasheet

Current PartRFQ

0322020.HXP

Littelfuse Inc.In Stock: 21740322020.HXP Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 0322020.MXP are identified based on strict equivalence across all critical electrical and mechanical parameters. The substitution criteria are:

• Current Rating: 20 A (exact match required)
• Voltage Rating: 65V AC and 65V DC (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" (exact match required)
• Size / Dimension: 0.250" Dia x 1.250" L (exact match required)
• Breaking Capacity: 200A AC, 1kA DC (exact match required)
• Melting I²t: 192 (exact match required)
• Approval Agency: CE, UL (exact match required)
• Operating Temperature Range: -55°C ~ 125°C (exact match required)
• RoHS and REACH Compliance: ROHS3 Compliant, REACH Unaffected (exact match required)

Only parts meeting all these criteria are classified as direct parametric equivalents.

Parameter Comparison

Engineering Selection Recommendations

Both the 0322020.MXP and 0322020.HXP are active production parts manufactured by Littelfuse Inc. and carry identical electrical, mechanical, and compliance specifications. Selection between these parts may be based on inventory availability, lead time, or supply chain requirements. The 0322020.HXP currently maintains higher inventory levels (2130 units) compared to the 0322020.MXP (1027 units), which may influence procurement decisions for high-volume applications. Both parts maintain CE and UL certifications, ROHS3 compliance, and REACH unaffected status, ensuring regulatory compatibility across industrial and commercial applications.

Frequently Asked Questions (FAQ)

Q: Can the 0322020.HXP be used as a direct replacement for the 0322020.MXP?

A: Yes. Both parts are parametric equivalents with identical electrical ratings (20A, 65V AC/DC), mechanical dimensions (0.250" Dia x 1.250" L), response characteristics (Fast Blow), and regulatory certifications (CE, UL). They are interchangeable in applications requiring 3AB/3AG cartridge fuse holders.

Q: Are there any differences in performance or reliability between these two part numbers?

A: No. Both parts share identical specifications across all critical parameters including breaking capacity (200A AC, 1kA DC), melting I²t (192), DC cold resistance (0.0034 Ohms), and operating temperature range (-55°C ~ 125°C).

Q: What holder types are compatible with these fuses?

A: Both fuses require a holder compatible with the 3AB, 3AG, 1/4" x 1-1/4" cartridge format. The physical dimensions (0.250" diameter x 1.250" length) ensure mechanical compatibility with standard cartridge fuse holders designed for this package specification.

Q: Do both parts meet the same regulatory requirements?

A: Yes. Both the 0322020.MXP and 0322020.HXP carry identical certifications: CE and UL approval, ROHS3 compliance, and REACH unaffected status. They are suitable for applications requiring these regulatory certifications.

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

A: The MXP and HXP designations represent different manufacturing or distribution variants within the Littelfuse 322 series. Both maintain identical electrical and mechanical specifications, with differences limited to internal manufacturing or packaging processes that do not affect functional performance or compatibility.