Equivalent & Substitute Parts for 3AP 4.6-R

Part Overview

The 3AP 4.6-R is a 4.6 A, 250 V AC/DC fast-blow glass fuse cartridge manufactured by Bel Fuse Inc. in the 3AB/3AG form factor with axial through-hole mounting. This component is classified as obsolete, making identification of functionally equivalent substitute parts essential for system maintenance, repair, and redesign applications. Active alternatives from other manufacturers provide equivalent electrical and mechanical performance while maintaining current product support and availability.

Substiute Parts

3AP 3.5-R

Bel Fuse Inc.In Stock: 9453AP 3.5-R Datasheet

Current PartRFQ

BK/AGC-V-3-1/2

Eaton - Electronics DivisionIn Stock: 1182BK/AGC-V-3-1/2 Datasheet

SimilarRFQ

BK/AGC-V-3-1/2R

Eaton - Electronics DivisionIn Stock: 965BK/AGC-V-3-1/2R Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 3AP 4.6-R are qualified based on the following electrical and mechanical parameters:

• Current Rating: 4.6 A (exact match required)
• Voltage Rating: 250 V AC minimum (exact match required)
• Fuse Type: Cartridge, Glass (exact match required)
• Form Factor: 3AB/3AG (exact match required)
• Mounting Type: Through Hole (exact match required)
• Response Time: Fast Blow (exact match required)
• Dimensions: 1/4" x 1-1/4" nominal (within manufacturing tolerance)

The substitute parts identified below meet all critical electrical and mechanical parameters. Dimensional variations within standard manufacturing tolerances do not affect form factor compatibility or circuit performance.

Parameter Comparison

Engineering Selection Recommendations

Both Eaton substitute parts (BK/AGC-V-3-1/2 and BK/AGC-V-3-1/2R) provide electrical and mechanical equivalence to the obsolete 3AP 4.6-R. Selection between these options depends on specific application requirements:

BK/AGC-V-3-1/2R is the preferred substitute when dimensional precision and through-hole mounting specifications are critical. This part provides documented dimensions within standard manufacturing tolerance of the original 3AP 4.6-R and explicit through-hole mounting confirmation.

BK/AGC-V-3-1/2 is available as an alternative when packaging flexibility is acceptable and bulk inventory availability is prioritized.

Both substitute parts are active products from Eaton - Electronics Division with current manufacturing support. Neither substitute achieves RoHS3 compliance; systems requiring RoHS3 compliance must evaluate alternative fuse manufacturers or product lines. The original 3AP 4.6-R carries CE, CSA, cULus, and PSE approvals; substitute part certifications should be verified against specific regulatory requirements for the target application.

Frequently Asked Questions (FAQ)

Q: Can BK/AGC-V-3-1/2 and BK/AGC-V-3-1/2R be used interchangeably with 3AP 4.6-R?

A: Both parts meet the core electrical parameters (4.6 A, 250 V AC, fast-blow cartridge, 3AB/3AG form factor). BK/AGC-V-3-1/2R is preferred due to documented dimensional specifications and explicit through-hole mounting confirmation. BK/AGC-V-3-1/2 lacks detailed dimensional data but shares the same electrical ratings.

Q: What are the dimensional differences between these parts?

A: The 3AP 4.6-R measures 0.272" diameter x 1.280" length. The BK/AGC-V-3-1/2R measures 0.266" diameter x 1.292" length. These variations fall within standard manufacturing tolerances for 3AB/3AG form factor cartridges and do not affect mechanical fit or electrical performance in standard fuse holders.

Q: Are there RoHS compliance considerations?

A: The original 3AP 4.6-R is ROHS3 compliant. Both Eaton substitutes (BK/AGC-V-3-1/2 and BK/AGC-V-3-1/2R) are RoHS non-compliant. Applications with RoHS3 requirements must source alternatives from manufacturers maintaining RoHS3 certification for this fuse category.

Q: What certifications apply to the substitute parts?

A: Specific certifications for BK/AGC-V-3-1/2 and BK/AGC-V-3-1/2R are not provided in available technical data. The original 3AP 4.6-R carries CE, CSA, cULus, and PSE approvals. Certification requirements for the target application should be confirmed with the component supplier or manufacturer documentation.

Q: Are these parts suitable for both AC and DC applications?

A: All three parts are rated for AC/DC operation at 250 V. The 3AP 4.6-R specifies 250 V AC with DC capability. Eaton parts are described as AC/DC fuses. Specific DC voltage ratings for the Eaton substitutes are not documented; applications requiring confirmed DC ratings should reference detailed manufacturer specifications.