3ABP 2-R Ceramic Fuse Equivalent & Substitute Parts

Part Overview

The 3ABP 2-R is a 2A 250VAC ceramic cartridge fuse manufactured by Bel Fuse Inc., designed for through-hole mounting in 3AB/3AG form factor applications. This component is classified as obsolete, making identification of active equivalent parts essential for ongoing system support and component procurement. Substitute parts must maintain identical electrical ratings, mechanical dimensions, and approval certifications to ensure direct functional replacement without circuit redesign.

Substiute Parts

3ABP 2-R

Bel Fuse Inc.In Stock: 7113ABP 2-R Datasheet

Current PartRFQ

0324002.HXP

Littelfuse Inc.In Stock: 11950324002.HXP Datasheet

DirectRFQ

0324002.MXP

Littelfuse Inc.In Stock: 10030324002.MXP Datasheet

DirectRFQ

0324002.VXP

Littelfuse Inc.In Stock: 10290324002.VXP Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 3ABP 2-R is based on strict equivalence of the following parameters:

• Current Rating: 2 A (exact match required)
• Voltage Rating - AC: 250 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" (Axial) (exact match required)
• Mounting Type: Through Hole (exact match required)
• Operating Temperature Range: -55°C ~ 125°C (exact match required)

The three Littelfuse 324 series parts (0324002.HXP, 0324002.MXP, 0324002.VXP) meet all substitution criteria. These parts are manufactured by Littelfuse Inc., carry active product status, and provide enhanced DC voltage rating (125V DC) compared to the original part specification, which does not restrict their use in AC-only applications.

Parameter Comparison

Engineering Selection Recommendations

All three Littelfuse 324 series substitute parts (0324002.HXP, 0324002.MXP, 0324002.VXP) are functionally equivalent to the 3ABP 2-R for AC applications. Selection among these three variants should be based on packaging and inventory availability, as they are electrically and mechanically identical.

The substitute parts carry active product status, ensuring long-term availability and supply chain continuity. All substitute parts maintain ROHS3 compliance and carry equivalent or expanded approval certifications (CE, CSA, PSE, UL) compared to the original part. The addition of UL certification on substitute parts provides enhanced regulatory coverage.

Minor dimensional variations (0.003" diameter and 0.008" length differences) and increased melting I²t values (11 versus 7.2) on substitute parts remain within acceptable tolerance for 3AB/3AG form factor applications and do not restrict interchangeability in existing circuit designs.

Frequently Asked Questions (FAQ)

Q: Can the Littelfuse 324 series parts directly replace the 3ABP 2-R without modification?

A: Yes. The substitute parts maintain identical current rating (2A), AC voltage rating (250V), fuse type (ceramic cartridge), response time (fast blow), package form factor (3AB/3AG), and operating temperature range (-55°C to 125°C). Through-hole mounting compatibility is preserved.

Q: What is the significance of the DC voltage rating on substitute parts?

A: The substitute parts specify 125V DC rating, whereas the original 3ABP 2-R does not specify DC voltage. This additional specification does not restrict use in AC-only circuits and provides expanded application flexibility if DC operation is required in future designs.

Q: Are there differences in breaking capacity between the original and substitute parts?

A: The original part specifies 100A breaking capacity at rated voltage. Substitute parts specify 100A AC and 10kA DC breaking capacity. The AC breaking capacity remains equivalent; the DC specification on substitutes represents additional capability.

Q: How do the dimensional variations affect mechanical fit?

A: Substitute parts measure 0.275" diameter × 1.288" length versus the original 0.272" × 1.280". These differences (0.003" and 0.008" respectively) fall within standard 3AB/3AG form factor tolerances and do not affect mechanical fit in standard fuse holders.

Q: What is the difference between the three Littelfuse substitute part numbers?

A: The three part numbers (0324002.HXP, 0324002.MXP, 0324002.VXP) are electrically and mechanically identical. Differences are limited to internal manufacturing variants or packaging designations. Selection should be based on inventory availability and supplier preference.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All three Littelfuse 324 series substitute parts are ROHS3 compliant, matching the compliance status of the original 3ABP 2-R.