Littelfuse 031202.5VXP Glass Cartridge Fuse Equivalent & Substitute Parts

Part Overview

The Littelfuse 031202.5VXP is a 2.5 A, 250 V AC/DC fast-blow glass cartridge fuse designed for 3AB and 3AG holder applications. This fuse is classified as Active product status and is ROHS3 compliant with multiple international approvals including CE, CSA, KC, PSE, and UL. Substitute parts are identified when equivalent electrical and mechanical parameters align with the main part specifications, enabling direct replacement in compatible holder assemblies.

Substiute Parts

031202.5VXP

Littelfuse Inc.In Stock: 909031202.5VXP Datasheet

Current PartRFQ

031202.5HXP

Littelfuse Inc.In Stock: 2634031202.5HXP Datasheet

Parametric EquivalentRFQ

0001.1028

SCHURTER Inc.In Stock: 6500001.1028 Datasheet

MFR RecommendedRFQ

BK/AGC-2-1/2-R

Eaton - Electronics DivisionIn Stock: 1025BK/AGC-2-1/2-R Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 031202.5VXP are identified based on the following critical parameters that determine functional equivalence:

• Current Rating: 2.5 A (exact match required)
• Voltage Rating (AC): 250 V (exact match required)
• Response Time: Fast Blow (exact match required)
• Fuse Type: Cartridge, Glass (exact match required)
• Package / Case: 3AB, 3AG, 1/4" x 1-1/4" (exact match required for holder compatibility)
• Size / Dimension: 0.250" Dia x 1.250" L (exact match required for mechanical fit)

All identified substitutes meet these core electrical and mechanical parameters, ensuring compatibility with existing 3AB and 3AG holder assemblies.

Parameter Comparison

Engineering Selection Recommendations

031202.5HXP (Littelfuse): This part is a parametric equivalent with identical electrical and mechanical specifications to the main part. Both are Active status products with matching current, voltage, response time, and package specifications. This substitute offers the highest compatibility assurance.

BK/AGC-2-1/2-R (Eaton - Electronics Division): This part is a parametric equivalent meeting all core electrical and mechanical requirements. It is Active status and carries CSA and UL approvals. The AGC series designation indicates compatibility with standard 3AB and 3AG holder assemblies.

0001.1028 (SCHURTER): This part meets all core electrical and mechanical parameters but carries Obsolete product status. While functionally equivalent in electrical performance, the narrower operating temperature range (-40°C ~ 85°C versus -55°C ~ 125°C) and Obsolete classification limit its suitability for new designs or long-term supply assurance. This part should be considered only when existing inventory constraints require it.

Frequently Asked Questions (FAQ)

Q: Can I use any of these substitute parts interchangeably with the 031202.5VXP?

A: The 031202.5HXP and BK/AGC-2-1/2-R are direct substitutes meeting identical electrical and mechanical specifications. The 0001.1028 meets electrical and mechanical requirements but has Obsolete status and a narrower operating temperature range.

Q: What determines if a fuse can substitute for the 031202.5VXP?

A: Substitution requires exact matching of current rating (2.5 A), voltage rating (250 V AC), response time (Fast Blow), fuse type (Cartridge, Glass), package designation (3AB, 3AG), and physical dimensions (0.250" Dia x 1.250" L). These parameters ensure mechanical fit in the holder and electrical performance equivalence.

Q: Are there differences in breaking capacity between these parts?

A: Yes. The 031202.5VXP, 031202.5HXP, and BK/AGC-2-1/2-R have 100A breaking capacity, while the 0001.1028 has 1.5kA breaking capacity. Breaking capacity differences do not affect substitution eligibility when all other parameters match.

Q: Why is the 0001.1028 marked as Obsolete?

A: Obsolete status indicates the manufacturer has discontinued active production. While the part remains functionally equivalent, long-term availability and supply continuity cannot be assured. Active status parts (031202.5HXP and BK/AGC-2-1/2-R) are preferred for new applications.

Q: Do all these fuses fit in 3AB and 3AG holders?

A: Yes. All parts are specified for 3AB and 3AG holder compatibility with matching 1/4" x 1-1/4" dimensions. The 0001.1028 has a nominal length of 31.80mm versus 31.75mm for others, representing a 0.05mm tolerance variation within standard mechanical fit specifications.

Q: What approvals do these fuses carry?

A: The 031202.5VXP carries CE, CSA, KC, PSE, and UL approvals. The 031202.5HXP carries the same approvals. The BK/AGC-2-1/2-R carries CSA and UL approvals. The 0001.1028 carries no listed approval agencies.