Equivalent & Substitute Parts for BK1/ABC-15-R

Part Overview

The BK1/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. The fuse operates with fast-blow response characteristics and is housed in a 3AB/3AG form factor measuring 0.250" diameter by 1.250" length. Substitute parts must maintain identical electrical ratings, mechanical dimensions, and holder compatibility to ensure direct functional replacement without circuit redesign.

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"
Size / Dimension	0.250" Dia x 1.250" L (6.35mm x 31.75mm)
Mounting Type	Requires Holder
Breaking Capacity @ Rated Voltage	750A AC, 10kA DC
Approval Agency	CSA, UL

Substitute Part Grouping Explanation

Substitute parts for the BK1/ABC-15-R are selected based on strict parametric equivalence across the following critical criteria:

Electrical Parameters: Current rating of 15 A, AC voltage rating of 250 V, DC voltage rating of 125 V, and fast-blow response time must be maintained across all substitutes.

Mechanical Parameters: All substitute parts must conform to the 3AB/3AG form factor with dimensions of 0.250" diameter by 1.250" length to ensure compatibility with existing fuse holders without mechanical modification.

Functional Parameters: Breaking capacity and melting I²t characteristics determine the fuse's protective performance. Parts are grouped by breaking capacity specifications: 750A AC / 10kA DC (primary group) and 200A AC / 10kA DC (secondary group).

Regulatory Compliance: Approval agencies (CSA, UL, UR, CE, K-MARK) and RoHS status are documented to support compliance requirements in target applications.

Product Status: Active substitute parts are prioritized over obsolete designations to ensure long-term availability and supply chain continuity.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Series	Current Rating (A)	Voltage AC (V)	Voltage DC (V)	Response Time	Breaking Capacity AC	Breaking Capacity DC	Melting I²t	DC Cold Resistance (Ohms)	Product Status	RoHS Status	Approval Agency
BK1/ABC-15-R	Eaton - Electronics Division	ABC	15	250	125	Fast Blow	750A	10kA	200.2	0.00553	Obsolete	ROHS3 Compliant	CSA, UL
ABC-15-R	Eaton - Electronics Division	ABC	15	250	125	Fast Blow	750A	10kA	200.2	0.00553	Active	ROHS3 Compliant	CSA, UL
BK/ABC-15-R	Eaton - Electronics Division	ABC	15	250	125	Fast Blow	750A	10kA	200.2	0.00553	Active	ROHS3 Compliant	CSA, UL
BK/ABC-15DD-R	Eaton - Electronics Division	ABC	15	250	125	Fast Blow	750A	10kA	200.2	0.00553	Active	ROHS3 Compliant	CSA, UL
BK/ABC-15KK	Eaton - Electronics Division	ABC	15	250	125	Fast Blow	750A	10kA	200.2	0.00553	Active	RoHS non-compliant	CSA, UL
BK/ABC-B-15	Eaton - Electronics Division	ABC	15	250	125	Fast Blow	750A	10kA	200.2	0.005425	Active	RoHS non-compliant	CSA, UL
BK/GBB-15-R	Eaton - Electronics Division	GBB	15	250	125	Fast Blow	10kA	10kA	Not specified	0.00472	Active	ROHS3 Compliant	CSA, UR
BK1/ABC-15AX-R	Eaton - Electronics Division	ABC	15	250	125	Fast Blow	750A	10kA	200.2	0.00553	Active	ROHS3 Compliant	CSA, UL
GBB-15-R	Eaton - Electronics Division	GBB	15	250	125	Fast Blow	200A	10kA	0.0735	0.00472	Active	ROHS3 Compliant	CSA, UR
0314015.HXP	Littelfuse Inc.	314	15	250	125	Fast Blow	750A	10kA	292	0.00505	Active	ROHS3 Compliant	CE, CSA, K-MARK, UL
0314015.MXANP	Littelfuse Inc.	314	15	250	125	Fast Blow	750A	10kA	292	0.00505	Active	ROHS3 Compliant	CE, CSA, K-MARK, UL

Engineering Selection Recommendations

Primary Substitutes (Eaton ABC Series - Full Parametric Match):

ABC-15-R, BK/ABC-15-R, BK/ABC-15DD-R, and BK1/ABC-15AX-R are direct functional equivalents to the obsolete BK1/ABC-15-R. These parts maintain identical electrical ratings (15 A, 250 V AC, 125 V DC), mechanical form factor (3AB/3AG, 0.250" x 1.250"), breaking capacity (750A AC, 10kA DC), and melting I²t (200.2). All are ROHS3 compliant and carry CSA/UL approval. These substitutes are recommended for applications requiring strict parametric equivalence with the original design.

Secondary Substitutes (Eaton ABC Series - Compliance Variations):

BK/ABC-15KK and BK/ABC-B-15 provide electrical and mechanical equivalence but differ in RoHS compliance status (non-compliant). These parts are suitable for applications where RoHS compliance is not a regulatory requirement. DC cold resistance values show minor variation (0.005425 Ohms for BK/ABC-B-15 versus 0.00553 Ohms for the main part), which does not affect circuit performance within standard tolerance ranges.

Alternative Series Substitutes (Eaton GBB Series):

BK/GBB-15-R and GBB-15-R are Eaton GBB series alternatives with identical electrical ratings and mechanical dimensions. BK/GBB-15-R maintains 750A AC breaking capacity and is ROHS3 compliant. GBB-15-R operates at reduced AC breaking capacity (200A AC) with lower melting I²t (0.0735), suitable only for applications with lower fault current requirements. Both carry CSA/UR approval.

Cross-Manufacturer Substitutes (Littelfuse 314 Series):

0314015.HXP and 0314015.MXANP from Littelfuse Inc. provide full parametric equivalence with 15 A, 250 V AC, 125 V DC ratings, 750A AC / 10kA DC breaking capacity, and 3AB/3AG form factor. These parts are ROHS3 compliant and carry expanded approval certifications (CE, CSA, K-MARK, UL). Operating temperature range (-55°C to 125°C) is specified for Littelfuse parts. These substitutes are suitable for applications requiring multi-source qualification or extended temperature operation.

Frequently Asked Questions (FAQ)

Q: Can BK/ABC-15-R be used as a direct replacement for the obsolete BK1/ABC-15-R?

A: Yes. BK/ABC-15-R is a direct parametric equivalent with identical current rating (15 A), voltage ratings (250 V AC, 125 V DC), response time (fast blow), mechanical dimensions (0.250" x 1.250"), and breaking capacity (750A AC, 10kA DC). Both require the same 3AB/3AG holder and carry CSA/UL approval.

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

A: Both series maintain identical electrical ratings and mechanical form factors for the 15 A, 250 V AC, 125 V DC specification. The primary difference is breaking capacity: ABC series provides 750A AC breaking capacity, while GBB series provides 10kA AC breaking capacity (BK/GBB-15-R) or 200A AC (GBB-15-R). Selection depends on the maximum fault current in the application circuit.

Q: Are Littelfuse 0314015.HXP and 0314015.MXANP compatible with existing Eaton fuse holders?

A: Yes. Both Littelfuse parts conform to the 3AB/3AG form factor with dimensions of 0.250" diameter by 1.250" length, ensuring mechanical compatibility with standard Eaton fuse holders. Electrical ratings (15 A, 250 V AC, 125 V DC) and breaking capacity (750A AC, 10kA DC) are equivalent to the primary Eaton substitutes.

Q: Which substitute parts are RoHS3 compliant?

A: ABC-15-R, BK/ABC-15-R, BK/ABC-15DD-R, BK1/ABC-15AX-R, BK/GBB-15-R, GBB-15-R, 0314015.HXP, and 0314015.MXANP are all ROHS3 compliant. BK/ABC-15KK and BK/ABC-B-15 are RoHS non-compliant and should be selected only when RoHS compliance is not required.

Q: What approval certifications are required for my application?

A: The original BK1/ABC-15-R carries CSA and UL approval. Substitute parts maintain these certifications: Eaton ABC and GBB series parts carry CSA/UL or CSA/UR approval. Littelfuse 314 series parts carry expanded certifications including CE, CSA, K-MARK, and UL. Selection should match the approval requirements specified in the application design documentation.

Q: Can I use GBB-15-R in place of ABC-15-R?

A: GBB-15-R is mechanically and electrically compatible but operates at reduced AC breaking capacity (200A AC versus 750A AC). This substitution is valid only if the application circuit has maximum fault current below 200A AC. For circuits with higher fault current potential, ABC series parts with 750A AC breaking capacity are required.

Q: What is the significance of DC cold resistance values?

A: DC cold resistance values (ranging from 0.00472 to 0.00553 Ohms across all substitutes) represent the fuse element resistance at room temperature. Minor variations within this range do not affect circuit performance or protective characteristics. All values are within acceptable engineering tolerance for ceramic cartridge fuses in this current and voltage class.

Q: Are there inventory considerations when selecting substitutes?

A: Inventory levels vary across substitute parts. BK/ABC-15-R has the highest inventory (3845 pcs), while BK/ABC-15DD-R has lower availability (892 pcs). Littelfuse 0314015.MXANP offers substantial inventory (4560 pcs). Procurement planning should account for these availability differences when establishing supply chain strategies.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message