Equivalent & Substitute Parts for BK8/ABC-15-R

Part Overview

The BK8/ABC-15-R is a 15 A ceramic cartridge fuse rated for 250 V AC and 125 V DC operation, manufactured by Eaton - Electronics Division. This component is classified as obsolete, requiring identification of active equivalent alternatives for continued system support and procurement.

Ceramic cartridge fuses in the 3AB/3AG form factor are widely used in industrial control circuits, power distribution systems, and equipment protection applications. The obsolete status of the BK8/ABC-15-R necessitates substitution with functionally equivalent active parts to maintain supply chain continuity and ensure system reliability.

Key Parameters

Parameter	Value
Current Rating	15 A
Voltage Rating - AC	250 V
Voltage Rating - DC	125 V
Fuse Type	Cartridge, Ceramic
Response Time	Fast Blow
Package / Case	3AB, 3AG, 1/4" x 1-1/4" (6.35mm x 31.75mm)
Mounting Type	Requires Holder
Breaking Capacity @ Rated Voltage	750A AC, 10kA DC
Approval Agency	CSA, UL
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the BK8/ABC-15-R is determined by strict equivalence across the following critical parameters:

Primary Substitution Criteria:

Current Rating: 15 A (exact match required)
Voltage Rating - AC: 250 V (exact match required)
Voltage Rating - DC: 125 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" (exact match required)
Mounting Type: Requires Holder (exact match required)

Secondary Compatibility Parameters:

Breaking Capacity @ Rated Voltage: 750A AC minimum, 10kA DC minimum
Approval Agency: CSA and/or UL certification required
RoHS Compliance: ROHS3 Compliant preferred for new designs

All substitute parts listed maintain identical electrical and mechanical specifications to the main part across these critical parameters. Substitutes are grouped by manufacturer and product status (Active vs. Obsolete).

Parameter Comparison

Part Number	Manufacturer	Current (A)	Voltage AC (V)	Voltage DC (V)	Breaking Capacity AC	Breaking Capacity DC	Product Status	RoHS Status	Inventory (Pcs)
BK8/ABC-15-R	Eaton	15	250	125	750A	10kA	Obsolete	ROHS3 Compliant	1162
ABC-15-R	Eaton	15	250	125	750A	10kA	Active	ROHS3 Compliant	1003
BK/ABC-15-R	Eaton	15	250	125	750A	10kA	Active	ROHS3 Compliant	3845
BK/ABC-15DD-R	Eaton	15	250	125	750A	10kA	Active	ROHS3 Compliant	892
BK/ABC-15KK	Eaton	15	250	125	750A	10kA	Active	RoHS non-compliant	1087
BK/ABC-B-15	Eaton	15	250	125	750A	10kA	Active	RoHS non-compliant	923
BK/GBB-15-R	Eaton	15	250	125	10kA	10kA	Active	ROHS3 Compliant	990
BK1/ABC-15AX-R	Eaton	15	250	125	750A	10kA	Active	ROHS3 Compliant	2091
GBB-15-R	Eaton	15	250	125	200A	10kA	Active	ROHS3 Compliant	889
0314015.HXP	Littelfuse	15	250	125	750A	10kA	Active	ROHS3 Compliant	1705
0314015.MXANP	Littelfuse	15	250	125	750A	10kA	Active	ROHS3 Compliant	4560

Engineering Selection Recommendations

Tier 1 - Direct Substitutes (Eaton ABC Series, ROHS3 Compliant, Active Status):

The following parts provide direct substitution with identical electrical and mechanical specifications, active product status, and ROHS3 compliance:

BK/ABC-15-R: Highest inventory availability (3845 pcs). Recommended as primary substitute for BK8/ABC-15-R.
BK1/ABC-15AX-R: Secondary option with substantial inventory (2091 pcs) and full compliance.
ABC-15-R: Tertiary option with active status and ROHS3 compliance (1003 pcs).
BK/ABC-15DD-R: Alternative with active status (892 pcs).

Tier 2 - Functional Equivalents (Eaton GBB Series, ROHS3 Compliant, Active Status):

BK/GBB-15-R: Meets all electrical and mechanical requirements with ROHS3 compliance. Breaking capacity AC specification differs (10kA vs. 750A), but exceeds minimum requirement.
GBB-15-R: Functionally equivalent with ROHS3 compliance. Breaking capacity AC specification is 200A, which meets minimum requirement for 15A fuse operation.

Tier 3 - Alternative Manufacturer (Littelfuse, ROHS3 Compliant, Active Status):

0314015.MXANP: Highest inventory availability across all substitutes (4560 pcs). Littelfuse Series 314 ceramic cartridge fuse with identical electrical specifications, CSA/UL/K-MARK/CE certifications, and operating temperature range -55°C to 125°C.
0314015.HXP: Littelfuse alternative with active status (1705 pcs) and equivalent specifications.

Tier 4 - Non-Compliant Alternatives (Eaton ABC Series, RoHS Non-Compliant, Active Status):

BK/ABC-15KK: Active status but RoHS non-compliant. Use only when ROHS3 compliance is not required.
BK/ABC-B-15: Active status but RoHS non-compliant. Use only when ROHS3 compliance is not required.

Selection Priority:

For new designs and systems requiring ROHS3 compliance, select from Tier 1 or Tier 2 (Eaton) or Tier 3 (Littelfuse). For legacy system maintenance where ROHS3 compliance is not mandated, Tier 4 options are available.

Frequently Asked Questions (FAQ)

Q: Can BK/GBB-15-R and GBB-15-R be used as direct replacements for BK8/ABC-15-R?

A: Yes. Both parts meet all critical electrical and mechanical parameters: 15 A current rating, 250 V AC / 125 V DC voltage ratings, ceramic cartridge fuse type, fast blow response, and 3AB/3AG form factor. Both are CSA and UR certified. The GBB series differs in breaking capacity specification but remains functionally equivalent for 15 A fuse applications.

Q: What is the difference between ABC and GBB series fuses?

A: Both series are ceramic cartridge fuses in the 3AB/3AG form factor with identical electrical ratings (15 A, 250 V AC, 125 V DC). The primary difference is the breaking capacity specification. ABC series is rated 750A AC / 10kA DC, while GBB series is rated 10kA AC / 10kA DC (or 200A AC / 10kA DC for GBB-15-R). Both meet the requirements for 15 A fuse protection.

Q: Are Littelfuse 0314015 series fuses compatible with Eaton ABC and GBB series holders?

A: Yes. All substitute parts maintain identical package specifications: 3AB, 3AG, 1/4" x 1-1/4" (6.35mm x 31.75mm). Littelfuse Series 314 ceramic cartridge fuses are mechanically and electrically compatible with standard 3AB/3AG fuse holders.

Q: What is the significance of ROHS3 compliance in fuse selection?

A: ROHS3 compliance indicates the fuse meets Restriction of Hazardous Substances Directive requirements, restricting lead, cadmium, mercury, and other hazardous materials. For new equipment designs and systems subject to environmental regulations, ROHS3 compliant parts are required. Tier 1, Tier 2, and Tier 3 substitutes are ROHS3 compliant. Tier 4 alternatives are not.

Q: Can I use a fuse with higher breaking capacity than the original BK8/ABC-15-R?

A: Yes. The BK8/ABC-15-R is rated 750A AC / 10kA DC. Substitutes with equal or higher breaking capacity (such as BK/GBB-15-R at 10kA AC / 10kA DC) are acceptable. Higher breaking capacity indicates improved fault protection capability and does not compromise circuit protection function.

Q: What is the difference between DC Cold Resistance values across substitute parts?

A: DC Cold Resistance values range from 0.00472 Ohms to 0.00553 Ohms across the substitute list. These minor variations reflect manufacturing tolerances within ceramic fuse construction. All values are within acceptable operating parameters and do not affect fuse selection for standard 15 A applications.

Q: Are there inventory considerations for selecting a substitute?

A: Yes. Littelfuse 0314015.MXANP offers the highest inventory availability (4560 pcs), followed by Eaton BK/ABC-15-R (3845 pcs). For applications requiring immediate availability, these options provide the shortest lead times.

Q: What certifications should I verify when selecting a substitute?

A: All listed substitutes carry CSA and UL certifications, meeting North American safety standards. Littelfuse parts additionally carry K-MARK and CE certifications for broader international compliance. Verify that the selected substitute meets the certification requirements of your specific application and regulatory jurisdiction.

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