3ABP 7-R Ceramic Fuse Equivalent & Substitute Parts

Part Overview

The 3ABP 7-R is a 7 A 250 V AC ceramic cartridge fuse manufactured by Bel Fuse Inc., designed for through-hole mounting in 3AB/3AG package format. This component is classified as obsolete, making equivalent substitute parts necessary for ongoing system maintenance and new design implementations. The fuse provides fast-blow response characteristics suitable for circuit protection applications requiring ceramic construction and axial lead configuration.

Substiute Parts

3ABP 7-R

Bel Fuse Inc.In Stock: 9513ABP 7-R Datasheet

Current PartRFQ

0324007.HXP

Littelfuse Inc.In Stock: 10230324007.HXP Datasheet

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0324007.MXP

Littelfuse Inc.In Stock: 18600324007.MXP Datasheet

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0324007.VXP

Littelfuse Inc.In Stock: 10760324007.VXP Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the 3ABP 7-R is determined by the following critical parameters:

• Current Rating: Must be 7 A
• Voltage Rating (AC): Must be 250 V minimum
• Fuse Type: Must be Cartridge, Ceramic
• Response Time: Must be Fast Blow
• Package / Case: Must be 3AB, 3AG, 1/4" x 1-1/4" (Axial)
• Mounting Type: Must be Through Hole
• Operating Temperature Range: Must support -55°C ~ 125°C

All three substitute parts from Littelfuse Inc. (0324007.HXP, 0324007.MXP, 0324007.VXP) meet these core electrical and mechanical requirements. These parts are manufactured in the active product status, providing long-term availability compared to the obsolete 3ABP 7-R.

Parameter Comparison

Engineering Selection Recommendations

All three Littelfuse substitute parts (0324007.HXP, 0324007.MXP, 0324007.VXP) are functionally equivalent to the 3ABP 7-R for AC circuit protection applications. The Littelfuse parts provide enhanced compliance certifications including UL approval and K-MARK/KC regional certifications not present in the original part. These substitutes are manufactured in active production status, ensuring long-term supply availability and consistent quality control.

The dimensional variance between the 3ABP 7-R (0.272" diameter) and Littelfuse substitutes (0.275" diameter) is within typical manufacturing tolerances for 3AB/3AG cartridge fuses and does not affect mechanical fit in standard through-hole fuse holders.

For applications requiring DC voltage protection, the Littelfuse substitutes provide 125 V DC rating, extending the functional capability beyond the original part specification.

Frequently Asked Questions (FAQ)

Q: Can the Littelfuse 0324007 series parts directly replace the 3ABP 7-R in existing designs?

A: Yes. All three Littelfuse parts (0324007.HXP, 0324007.MXP, 0324007.VXP) meet the core electrical parameters: 7 A current rating, 250 V AC voltage rating, fast-blow ceramic cartridge construction, and 3AB/3AG package format. The dimensional differences are within standard manufacturing tolerances for this fuse category.

Q: What is the difference between the three Littelfuse substitute parts?

A: The 0324007.HXP, 0324007.MXP, and 0324007.VXP parts are electrically and mechanically identical. They differ only in regional approval certifications: 0324007.HXP includes K-MARK, 0324007.VXP includes KC, and 0324007.MXP includes K-MARK. Selection depends on regional regulatory requirements for your application.

Q: Are there any electrical parameter differences I should consider?

A: The Littelfuse substitutes specify 125 V DC rating, whereas the original 3ABP 7-R does not specify DC voltage. For AC-only applications, this difference is not relevant. For applications involving DC circuits, the Littelfuse parts provide additional protection capability.

Q: Do the substitute parts have different breaking capacities?

A: Yes. The 3ABP 7-R specifies 200 A breaking capacity at rated voltage. The Littelfuse substitutes specify 750 A AC and 10 kA DC breaking capacity. This represents enhanced fault protection capability in the substitute parts.

Q: Are all parts RoHS compliant?

A: Yes. The 3ABP 7-R and all three Littelfuse substitute parts are ROHS3 compliant and REACH unaffected.