Equivalent & Substitute Parts for 3AP 5-R Glass Cartridge Fuse

Part Overview

The 3AP 5-R is a 5 A 250 V AC/DC glass cartridge fuse manufactured by Bel Fuse Inc., designed for through-hole mounting in 3AB/3AG package format with fast-blow response characteristics. This part is classified as obsolete. Equivalent and substitute parts are available from active manufacturers to ensure design continuity and supply chain reliability.

Substiute Parts

3AP 5-R

Bel Fuse Inc.In Stock: 10993AP 5-R Datasheet

Current PartRFQ

0318005.HXP

Littelfuse Inc.In Stock: 12800318005.HXP Datasheet

DirectRFQ

0318005.MXP

Littelfuse Inc.In Stock: 28030318005.MXP Datasheet

DirectRFQ

0318005.VXP

Littelfuse Inc.In Stock: 12210318005.VXP Datasheet

DirectRFQ

BK/AGC-V-5

Eaton - Electronics DivisionIn Stock: 845BK/AGC-V-5 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 3AP 5-R is determined by strict equivalence across the following parameters:

• Current Rating: 5 A (exact match required)
• Voltage Rating (AC): 250 V (exact match required)
• Package / Case: 3AB, 3AG, 1/4" x 1-1/4" (Axial) (exact match required)
• Fuse Type: Cartridge, Glass (exact match required)
• Response Time: Fast Blow (exact match required)
• Mounting Type: Through Hole (exact match required)
• Breaking Capacity @ Rated Voltage: 200 A (exact match required)
• Operating Temperature Range: -55°C ~ 125°C (exact match required)

All substitute parts listed below meet these criteria and are classified as direct equivalents or active alternatives.

Parameter Comparison

Engineering Selection Recommendations

For applications requiring RoHS3 compliance, the Littelfuse 318 series parts (0318005.HXP, 0318005.MXP, 0318005.VXP) are the preferred substitutes. All three variants are active products with identical electrical and mechanical specifications, differing only in packaging designation. These parts carry expanded approval agency certifications including KC and UL in addition to CE, CSA, and PSE.

The Eaton BK/AGC-V-5 is a functional equivalent meeting all core electrical and mechanical parameters. However, this part is RoHS non-compliant and carries a narrower approval agency scope (CSA, UL only). Selection of this part should be limited to applications where RoHS compliance is not required and existing certification scope is sufficient.

Frequently Asked Questions (FAQ)

Q: Can the Littelfuse 0318005 series parts be used interchangeably with the 3AP 5-R?

A: Yes. The 0318005.HXP, 0318005.MXP, and 0318005.VXP are direct electrical and mechanical equivalents. All three meet identical current, voltage, package, and response time specifications. Selection among these three variants depends on packaging requirements and inventory availability.

Q: What is the difference between 0318005.HXP, 0318005.MXP, and 0318005.VXP?

A: These three part numbers represent the same fuse with different packaging designations (Bulk packaging in all cases). Electrical and mechanical performance is identical across all three variants.

Q: Is the Eaton BK/AGC-V-5 a suitable replacement for new designs?

A: The Eaton part meets all core electrical and mechanical requirements. However, it is RoHS non-compliant, which may restrict its use in applications subject to RoHS regulations. Verify compliance requirements for your specific application before selection.

Q: What certifications should I verify for my application?

A: The 3AP 5-R carries CE, CSA, cULus, and PSE certifications. The Littelfuse 318 series extends this to include KC and UL. The Eaton part is limited to CSA and UL. Confirm that the selected substitute meets all required certifications for your end application and regional market.

Q: Are there dimensional differences between these parts?

A: Minor dimensional variations exist within the 3AB/3AG package specification. The 3AP 5-R measures 0.272" Dia x 1.280" L, while Littelfuse parts measure 0.275" Dia x 1.288" L, and Eaton measures 0.266" Dia x 1.292" L. These variations remain within standard package tolerances and do not affect mechanical compatibility in standard through-hole mounting applications.