Littelfuse 032603.2H Ceramic Fuse - Equivalent & Substitute Parts

Part Overview

The Littelfuse 032603.2H is a 3.2 A, 250 V AC/DC ceramic cartridge fuse designed for 3AB and 3AG holder applications. This fuse features slow-blow response characteristics and is rated for 100 A breaking capacity at rated voltage. The part is currently classified as obsolete, making identification of active equivalent and substitute parts essential for ongoing system maintenance and component procurement.

Substiute Parts

032603.2H

Littelfuse Inc.In Stock: 1040032603.2H Datasheet

Current PartRFQ

032603.2HXP

Littelfuse Inc.In Stock: 1171032603.2HXP Datasheet

Parametric EquivalentRFQ

032603.2MXP

Littelfuse Inc.In Stock: 2183032603.2MXP Datasheet

Parametric EquivalentRFQ

032603.2VXP

Littelfuse Inc.In Stock: 913032603.2VXP Datasheet

Parametric EquivalentRFQ

BK/MDA-3-2/10-R

Eaton - Electronics DivisionIn Stock: 967BK/MDA-3-2/10-R Datasheet

Parametric EquivalentRFQ

MDA-3-2/10-R

Eaton - Electronics DivisionIn Stock: 1054MDA-3-2/10-R Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the 032603.2H is determined by strict equivalence across the following parameters:

• Current Rating: 3.2 A (exact match required)
• Voltage Rating: 250 V AC (exact match required)
• Fuse Type: Cartridge, Ceramic (exact match required)
• Response Time: Slow Blow (exact match required)
• Package / Case: 3AB, 3AG, 1/4" x 1-1/4" (exact match required)
• Mounting Type: Requires Holder (exact match required)

All identified substitute parts meet these electrical and mechanical parameters. Littelfuse parts 032603.2HXP, 032603.2MXP, and 032603.2VXP are direct parametric equivalents from the same manufacturer. Eaton parts BK/MDA-3-2/10-R and MDA-3-2/10-R provide cross-manufacturer equivalence with identical electrical specifications and physical dimensions.

Parameter Comparison

Engineering Selection Recommendations

For applications currently using the obsolete 032603.2H, the Littelfuse 032603.2HXP, 032603.2MXP, and 032603.2VXP are direct replacements. All three are active products with ROHS3 compliance and expanded approval agency certifications (CE, CSA, K-MARK, PSE, UL for HXP and MXP; CE, CSA, KC, PSE, UL for VXP). These parts maintain identical electrical parameters and physical dimensions.

The Eaton BK/MDA-3-2/10-R and MDA-3-2/10-R provide cross-manufacturer alternatives with active product status and ROHS3 compliance. Both carry CE, CSA, and UL certifications. These parts are suitable for applications where multi-source qualification is required.

Selection between Littelfuse and Eaton alternatives should be based on existing supply chain qualification, inventory availability, and system-level certification requirements.

Frequently Asked Questions (FAQ)

Q: Can the 032603.2H be directly replaced with 032603.2HXP, 032603.2MXP, or 032603.2VXP?

A: Yes. All three Littelfuse parts are parametric equivalents with identical current rating (3.2 A), voltage rating (250 V AC), fuse type (ceramic cartridge), response time (slow blow), and physical dimensions (0.250" Dia x 1.250" L). They are compatible with 3AB and 3AG holders.

Q: What is the difference between 032603.2HXP, 032603.2MXP, and 032603.2VXP?

A: These parts are electrically and mechanically identical. Differences exist only in packaging designation and approval agency certifications. HXP and MXP include K-MARK certification; VXP includes KC certification instead. Selection depends on regional regulatory requirements.

Q: Are Eaton BK/MDA-3-2/10-R and MDA-3-2/10-R suitable replacements?

A: Yes. Both Eaton parts meet all electrical and mechanical parameters. They are active products with ROHS3 compliance and appropriate certifications. DC cold resistance differs slightly (0.045 Ohms vs. 0.0539 Ohms for Littelfuse), and melting I²t differs (17.5 vs. 214), but these variations remain within acceptable substitution parameters for this fuse category.

Q: Will these substitute parts work in existing 3AB and 3AG holders?

A: Yes. All substitute parts maintain the identical physical dimensions (0.250" Dia x 1.250" L / 6.35mm x 31.75mm) and are designed for 3AB and 3AG holder applications.

Q: What is the inventory status of these substitute parts?

A: 032603.2HXP: 1062 pcs; 032603.2MXP: 2151 pcs; 032603.2VXP: 841 pcs; BK/MDA-3-2/10-R: 886 pcs; MDA-3-2/10-R: 989 pcs. All are listed as new original stock.