Equivalent & Substitute Parts for BK/ABC-12RV Ceramic Cartridge Fuse

Part Overview

The BK/ABC-12RV is a 12 A ceramic cartridge fuse manufactured by Eaton - Electronics Division, rated for 250 V AC and 125 V DC operation. This through-hole mounted fuse is designed for fast-blow response applications and is classified as an active product. Substitute parts are identified when equivalent electrical ratings, mechanical dimensions, and approval certifications align with the original specification, enabling direct replacement in circuit protection applications without design modification.

Substiute Parts

BK/ABC-12RV

Eaton - Electronics DivisionIn Stock: 1043BK/ABC-12RV Datasheet

Current PartRFQ

0324012.HXP

Littelfuse Inc.In Stock: 11410324012.HXP Datasheet

DirectRFQ

0324012.MXP

Littelfuse Inc.In Stock: 108730324012.MXP Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the BK/ABC-12RV are qualified based on the following criteria:

Electrical Parameters (Mandatory Match):

• Current Rating: 12 A
• Voltage Rating - AC: 250 V
• Voltage Rating - DC: 125 V
• Response Time: Fast Blow
• Breaking Capacity @ Rated Voltage: 750 A AC, 10 kA DC

Mechanical Parameters (Mandatory Match):

• Fuse Type: Cartridge, Ceramic
• Package / Case: 3AB, 3AG, 1/4" x 1-1/4" (Axial)
• Mounting Type: Through Hole

Compliance Parameters:

• Approval Agency certifications must include CSA and/or UL

The substitute parts 0324012.HXP and 0324012.MXP, both manufactured by Littelfuse Inc., meet all mandatory electrical, mechanical, and compliance criteria. Both parts are classified as active products with confirmed inventory availability.

Parameter Comparison

Engineering Selection Recommendations

Both Littelfuse substitute parts (0324012.HXP and 0324012.MXP) are direct functional equivalents to the BK/ABC-12RV. Selection between these options is based on inventory availability and compliance requirements:

0324012.MXP is the primary substitute option, with 10,781 pieces in stock, providing maximum availability for production and replacement applications.

0324012.HXP is an alternative substitute with 1,089 pieces in stock, suitable when 0324012.MXP is unavailable.

Both substitute parts carry expanded approval certifications (CE, CSA, K-MARK, UL) compared to the original part (CSA, UL), and both are ROHS3 compliant. All three parts share identical electrical ratings, breaking capacity, response characteristics, and mechanical form factors required for direct substitution in 12 A, 250 V AC / 125 V DC circuit protection applications.

Frequently Asked Questions (FAQ)

Q: Can 0324012.HXP and 0324012.MXP be used interchangeably with BK/ABC-12RV?

A: Yes. Both Littelfuse parts meet all mandatory electrical parameters (12 A, 250 V AC, 125 V DC, fast-blow response), mechanical specifications (3AB/3AG package, 1/4" x 1-1/4" axial form factor), and approval certifications (CSA, UL). Direct substitution is supported without circuit modification.

Q: What is the difference between 0324012.HXP and 0324012.MXP?

A: Both parts are electrically and mechanically identical. The primary difference is inventory availability: 0324012.MXP has 10,781 pieces in stock, while 0324012.HXP has 1,089 pieces. Selection should prioritize 0324012.MXP for standard procurement.

Q: Are the physical dimensions identical across all three parts?

A: The parts share the same package designation (3AB, 3AG, 1/4" x 1-1/4" axial). Minor dimensional variations exist: BK/ABC-12RV measures 0.266" diameter x 1.292" length, while both Littelfuse parts measure 0.275" diameter x 1.288" length. These variations remain within the 3AB/3AG standard tolerance and do not affect mechanical fit in standard fuse holders.

Q: Do the substitute parts have additional compliance certifications?

A: Yes. Both Littelfuse parts carry CE, CSA, K-MARK, and UL certifications, compared to CSA and UL for the original BK/ABC-12RV. Both substitute parts are ROHS3 compliant. These additional certifications expand application scope without restricting use in existing designs.

Q: What is the melting I²t specification, and does it differ between parts?

A: Melting I²t is provided for reference: BK/ABC-12RV specifies 133.3, while both Littelfuse substitutes specify 570. This parameter reflects thermal energy absorption characteristics and is within acceptable variance for fast-blow ceramic cartridge fuses in this current and voltage class.