3ABP 3 Ceramic Fuse - Equivalent & Substitute Parts

Part Overview

The 3ABP 3 is a 3 A, 250 V AC ceramic cartridge fuse manufactured by Bel Fuse Inc. in the 3AB/3AG form factor (1/4" x 1-1/4" axial). This component is classified as obsolete, making equivalent substitutes necessary for ongoing system maintenance and new designs requiring this fuse specification.

Substiute Parts

3ABP 3

Bel Fuse Inc.In Stock: 10113ABP 3 Datasheet

Current PartRFQ

0324003.HXP

Littelfuse Inc.In Stock: 8420324003.HXP Datasheet

DirectRFQ

0324003.MXP

Littelfuse Inc.In Stock: 11140324003.MXP Datasheet

DirectRFQ

0324003.VXP

Littelfuse Inc.In Stock: 10740324003.VXP Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The three substitute parts (0324003.HXP, 0324003.MXP, 0324003.VXP) from Littelfuse Inc. are direct equivalents based on the following matching parameters:

• Current Rating: 3 A (identical)
• Voltage Rating - AC: 250 V (identical)
• Fuse Type: Cartridge, Ceramic (identical)
• Package / Case: 3AB, 3AG, 1/4" x 1-1/4" (Axial) (identical)
• Response Time: Fast Blow (identical)
• Operating Temperature Range: -55°C ~ 125°C (identical)
• Mounting Type: Through Hole (identical)

All three Littelfuse substitutes provide additional DC voltage rating (125 V DC) not specified in the original 3ABP 3, and feature improved breaking capacity for DC applications (10 kA DC vs. AC only specification). These substitutes maintain mechanical and electrical compatibility while offering enhanced performance characteristics and active product status.

Parameter Comparison

Engineering Selection Recommendations

All three Littelfuse substitutes (0324003.HXP, 0324003.MXP, 0324003.VXP) are suitable replacements for the obsolete 3ABP 3. Selection among these three variants should be based on regional certification requirements:

• 0324003.HXP and 0324003.MXP include K-MARK certification, suitable for Korean market applications.
• 0324003.VXP includes KC certification, also suitable for Korean market applications.

All three substitutes maintain UL, CSA, CE, and PSE certifications consistent with the original part. The transition to ROHS3-compliant alternatives aligns with current environmental and regulatory standards. Mechanical compatibility is confirmed within standard tolerance ranges for 3AB/3AG form factor fuses.

Frequently Asked Questions (FAQ)

Q: Are the Littelfuse 0324003 series fuses mechanically compatible with the 3ABP 3 footprint?

A: Yes. All substitute parts use the identical 3AB/3AG form factor (1/4" x 1-1/4" axial). Dimensional variations (0.272" to 0.275" diameter, 1.280" to 1.288" length) fall within standard mechanical tolerance ranges for this fuse category and do not affect mounting or circuit board compatibility.

Q: What is the difference between 0324003.HXP, 0324003.MXP, and 0324003.VXP?

A: These three parts are electrically and mechanically identical. The differences lie in regional certification markings: HXP and MXP include K-MARK certification, while VXP includes KC certification. Selection depends on geographic market requirements and certification standards applicable to your application.

Q: Can I use these substitutes in AC-only applications?

A: Yes. All substitute parts are rated for 250 V AC operation, matching the original 3ABP 3 specification. The additional 125 V DC rating on the Littelfuse parts does not restrict AC-only use.

Q: What is the impact of the higher DC cold resistance in the substitute parts?

A: The Littelfuse substitutes have a DC cold resistance of 0.0432 Ohms compared to 0.035 Ohms in the original part. This 23% increase is within acceptable limits for ceramic fuse technology and does not affect circuit performance in standard applications.

Q: Are the substitute parts RoHS compliant?

A: Yes. All three Littelfuse substitutes are ROHS3 compliant, whereas the original 3ABP 3 is RoHS non-compliant. This makes the substitutes suitable for applications with RoHS compliance requirements.