Equivalent & Substitute Parts for BK/ABC-V-8-R

Part Overview

The BK/ABC-V-8-R is an 8 A ceramic cartridge fuse manufactured by Eaton - Electronics Division, rated for 250 V AC and 125 V DC operation. This fast-blow fuse is designed for through-hole mounting in 3AB/3AG package format with dimensions of 1/4" x 1-1/4" (6.76 mm x 32.82 mm). The part maintains active product status with 885 pieces currently in stock. Substitute parts are identified when electrical ratings, mechanical dimensions, and functional characteristics align within acceptable engineering tolerances for direct circuit board replacement.

Substiute Parts

BK/ABC-V-8-R

Eaton - Electronics DivisionIn Stock: 939BK/ABC-V-8-R Datasheet

Current PartRFQ

0324008.MXP

Littelfuse Inc.In Stock: 41750324008.MXP Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The substitute part 0324008.MXP (Littelfuse Inc., Series 324) qualifies as a direct equivalent based on the following alignment of critical parameters:

Electrical Equivalence:

• Current Rating: 8 A (exact match)
• Voltage Rating - AC: 250 V (exact match)
• Voltage Rating - DC: 125 V (exact match)
• Response Time: Fast Blow (exact match)
• Fuse Type: Cartridge, Ceramic (exact match)

Mechanical Equivalence:

• Package / Case: 3AB, 3AG, 1/4" x 1-1/4" (Axial) (exact match)
• Mounting Type: Through Hole (exact match)
• Physical Dimensions: 0.275" Dia x 1.288" L vs. 0.266" Dia x 1.292" L (within acceptable tolerance for 3AB/3AG standard envelope)

Regulatory Equivalence:

• Both parts hold CSA and UL certifications
• Both parts comply with ROHS3 and EAR99 classification
• Littelfuse part includes additional certifications (CE, K-MARK, PSE)

Parameter Comparison

Engineering Selection Recommendations

Primary Part (BK/ABC-V-8-R - Eaton):

• Select when Eaton supply chain preference or existing inventory requirements are specified
• Active product status with 885 units in stock
• Holds CSA and UL certifications for North American markets
• ROHS3 compliant

Substitute Part (0324008.MXP - Littelfuse):

• Select when higher AC breaking capacity (750 A vs. 200 A) is required for enhanced fault protection margin
• Active product status with 4,100 units in stock, providing greater availability
• Holds expanded certification portfolio (CE, CSA, K-MARK, PSE, UL) for broader geographic market support
• ROHS3 compliant with REACH Unaffected status
• Operating temperature range specified (-55°C ~ 125°C) provides explicit thermal performance documentation
• Moisture Sensitivity Level 1 (Unlimited) indicates superior environmental robustness

Both parts satisfy identical electrical and mechanical requirements for direct circuit board substitution. Selection between them depends on supply availability, geographic certification requirements, and fault protection margin specifications.

Frequently Asked Questions (FAQ)

Q: Can 0324008.MXP be used as a direct replacement for BK/ABC-V-8-R in existing designs?

A: Yes. Both parts share identical current ratings (8 A), voltage ratings (250 V AC / 125 V DC), response time (Fast Blow), package format (3AB/3AG), and mounting type (Through Hole). Physical dimensions fall within the standard 3AB/3AG envelope tolerance. Both hold CSA and UL certifications.

Q: What is the difference in breaking capacity between these parts?

A: The Littelfuse 0324008.MXP provides 750 A AC breaking capacity compared to 200 A AC for the Eaton BK/ABC-V-8-R. Both provide 10 kA DC breaking capacity. The higher AC rating in the Littelfuse part offers increased margin for fault current handling without affecting normal circuit operation.

Q: Are the physical dimensions identical?

A: Dimensions are within acceptable tolerance for the 3AB/3AG standard package. Eaton part: 0.266" Dia x 1.292" L; Littelfuse part: 0.275" Dia x 1.288" L. Both fit standard 3AB/3AG through-hole footprints without modification.

Q: Do both parts meet the same regulatory standards?

A: Both parts hold CSA and UL certifications. The Littelfuse part includes additional certifications (CE, K-MARK, PSE) for expanded geographic compliance. Both are ROHS3 compliant.

Q: What is the significance of the Melting I²t difference (116.5 vs. 105)?

A: Melting I²t characterizes thermal energy absorption before fuse element melting. The values are within acceptable tolerance for equivalent fast-blow performance. Both parts maintain identical 8 A current rating and Fast Blow response classification.

Q: Which part should be selected for new designs?

A: Selection depends on supply chain strategy and performance requirements. The Littelfuse 0324008.MXP offers higher AC breaking capacity and broader certification coverage. The Eaton BK/ABC-V-8-R is suitable when Eaton component standardization is required. Both are functionally equivalent for standard 8 A circuit protection applications.