Littelfuse 0314005.HXP Ceramic Fuse - Equivalent & Substitute Parts

Part Overview

The Littelfuse 0314005.HXP is a 5 A ceramic cartridge fuse rated for 250 V AC and 125 V DC operation. This fast-blow fuse is designed for use in 3AB and 3AG holders with dimensions of 1/4" x 1-1/4" (6.35mm x 31.75mm). The part maintains active product status with full compliance to CE, CSA, K-MARK, PSE, and UL approval agencies. Equivalent and substitute parts are identified based on matching electrical ratings, mechanical compatibility, and functional performance characteristics.

Substiute Parts

0314005.HXP

Littelfuse Inc.In Stock: 7440314005.HXP Datasheet

Current PartRFQ

0314005.MXP

Littelfuse Inc.In Stock: 66390314005.MXP Datasheet

DirectRFQ

0332005.HXP

Littelfuse Inc.In Stock: 12270332005.HXP Datasheet

Parametric EquivalentRFQ

0001.1031

SCHURTER Inc.In Stock: 9910001.1031 Datasheet

DirectRFQ

BK/ABC-5-R

Eaton - Electronics DivisionIn Stock: 1680BK/ABC-5-R Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 0314005.HXP is determined by the following critical parameters:

• Current Rating: 5 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" (exact match required)
• Operating Temperature Range: -55°C ~ 125°C (minimum requirement)

Substitute parts are classified into three categories:

Direct Manufacturer Equivalent: Parts from the same manufacturer (Littelfuse) with identical electrical and mechanical specifications and active product status.

Parametric Equivalent: Parts meeting all critical electrical and mechanical parameters but from different product series or with different product status classifications.

Alternative Manufacturer Equivalent: Parts from different manufacturers meeting all critical electrical and mechanical parameters with active product status and relevant certifications.

Parameter Comparison

Engineering Selection Recommendations

Primary Recommendation: Littelfuse 0314005.MXP

The 0314005.MXP is the direct manufacturer equivalent with identical electrical specifications, mechanical compatibility, and active product status. This part carries the same approval certifications (CE, CSA, K-MARK, PSE, UL) and maintains full compatibility with the original 0314005.HXP specification.

Secondary Recommendation: Eaton BK/ABC-5-R

The BK/ABC-5-R from Eaton Electronics Division meets all critical electrical and mechanical parameters with active product status. This part is certified by CSA and UL. The breaking capacity and melting I²t values differ from the main part but remain within acceptable operational parameters for the specified current and voltage ratings.

Alternative Consideration: Littelfuse 0332005.HXP

The 0332005.HXP is a parametric equivalent from Littelfuse with matching electrical ratings and mechanical compatibility. However, this part carries obsolete product status and exhibits reduced breaking capacity (100A) and lower melting I²t (6.25) compared to the main part. Use only when new stock of active alternatives is unavailable and application requirements permit reduced breaking capacity.

Not Recommended: SCHURTER 0001.1031

The 0001.1031 differs in fuse construction (glass cartridge versus ceramic) and lacks specified DC voltage rating. Operating temperature range is reduced (-40°C ~ 85°C). This part is obsolete and should not be selected for new designs.

Frequently Asked Questions (FAQ)

Q: Can the 0314005.MXP be used as a direct replacement for the 0314005.HXP?

A: Yes. The 0314005.MXP is a direct manufacturer equivalent with identical electrical ratings (5 A, 250 V AC, 125 V DC), fuse type (ceramic cartridge), response time (fast blow), and mechanical package (3AB, 3AG, 1/4" x 1-1/4"). Both parts maintain active product status and carry the same approval certifications.

Q: What is the difference between ceramic and glass cartridge fuses in this application?

A: Ceramic and glass cartridge fuses differ in construction material and performance characteristics. Ceramic fuses (0314005.HXP, 0314005.MXP, BK/ABC-5-R) provide higher breaking capacity and are preferred for applications requiring robust fault protection. Glass fuses (0001.1031) have different thermal and electrical properties. Selection depends on specific application requirements and circuit protection design.

Q: Why is the 0332005.HXP listed as obsolete?

A: The 0332005.HXP belongs to the Littelfuse 332 series, which has been superseded by the 314 series. While the 0332005.HXP meets the critical electrical and mechanical parameters, its obsolete status indicates limited availability and potential discontinuation. Active alternatives such as 0314005.MXP should be prioritized for new designs.

Q: Are all substitute parts compatible with the same holder?

A: Yes. All listed substitute parts are designed for 3AB and 3AG holders with identical dimensions (1/4" x 1-1/4" or 6.35mm x 31.75mm). Mechanical compatibility is assured across all substitutes.

Q: What certifications should I verify when selecting a substitute?

A: Verify that the substitute part carries certifications required by your application and regional standards. The main part (0314005.HXP) is certified by CE, CSA, K-MARK, PSE, and UL. The 0314005.MXP carries identical certifications. The BK/ABC-5-R is certified by CSA and UL. Confirm that selected certifications meet your application requirements.

Q: How do breaking capacity and melting I²t affect substitution?

A: Breaking capacity and melting I²t are performance characteristics that determine fuse behavior under fault conditions. The main part specifies 750A AC breaking capacity and 26 melting I²t. Substitutes with lower values (such as 0332005.HXP with 100A and 6.25 I²t) may not provide equivalent protection in high-fault-current environments. Verify that substitute specifications are acceptable for your circuit protection design.