Equivalent & Substitute Parts for ABC-3-R Ceramic Fuse Cartridge

Part Overview

The ABC-3-R is a 3 A ceramic fuse cartridge rated for 250 V AC and 125 V DC operation, manufactured by Eaton - Electronics Division. This fast-blow cartridge fuse requires a compatible holder (3AB, 3AG format) and is designed for circuit protection in industrial and commercial applications. The part maintains Active product status with CSA and UL approval certifications. Equivalent and substitute parts are identified based on matching electrical ratings, mechanical dimensions, and functional performance characteristics to ensure direct interchangeability in existing installations.

Key Parameters

Parameter	Specification
Current Rating	3 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	100A AC, 10kA DC
RoHS Status	ROHS3 Compliant
Approval Agencies	CSA, UL

Substitute Part Grouping Explanation

Substitute parts for the ABC-3-R are classified into two categories based on electrical and mechanical compatibility:

Direct Manufacturer Substitutes (Eaton - Electronics Division): These parts share identical electrical ratings (3 A, 250 V AC, 125 V DC), mechanical dimensions (0.250" Dia x 1.250" L), fuse type (Cartridge, Ceramic), response time (Fast Blow), and package format (3AB, 3AG). Direct substitutes include BK/ABC-3-R from the same ABC series and variants from the GBB series (BK/GBB-3-R, GBB-3-R). All maintain Active product status and ROHS3 compliance.

Parametric Equivalent Substitutes (Cross-Manufacturer): Littelfuse Inc. parts 0314003.HXP and 0314003.MXP provide parametric equivalence through matching current rating (3 A), voltage ratings (250 V AC, 125 V DC), fuse type (Cartridge, Ceramic), response time (Fast Blow), and mechanical package (3AB, 3AG, 1/4" x 1-1/4"). These cross-manufacturer substitutes maintain identical breaking capacity (100A AC, 10kA DC) and are certified by CSA and UL, with additional certifications (CE, K-MARK, PSE).

Substitution eligibility is determined exclusively by: current rating, voltage ratings (AC and DC), fuse type, response time, mechanical dimensions, package format, and breaking capacity at rated voltage.

Parameter Comparison

Part Number	Manufacturer	Series	Current Rating (A)	Voltage AC (V)	Voltage DC (V)	Response Time	Breaking Capacity AC	Breaking Capacity DC	DC Cold Resistance (Ω)	Melting I²t	Approval Agencies	Product Status
ABC-3-R	Eaton	ABC	3	250	125	Fast Blow	100A	10kA	0.047	6.55	CSA, UL	Active
BK/ABC-3-R	Eaton	ABC	3	250	125	Fast Blow	100A	10kA	0.047	6.55	CSA, UL	Active
BK/GBB-3-R	Eaton	GBB	3	250	125	Fast Blow	10kA	10kA	0.04475	Not Specified	CSA, UR	Active
GBB-3-R	Eaton	GBB	3	250	125	Fast Blow	200A	10kA	0.04475	Not Specified	CSA, UR	Active
0314003.HXP	Littelfuse	314	3	250	125	Fast Blow	100A	10kA	0.0432	14.6	CE, CSA, K-MARK, PSE, UL	Active
0314003.MXP	Littelfuse	314	3	250	125	Fast Blow	100A	10kA	0.0432	14.6	CE, CSA, K-MARK, PSE, UL	Active

Engineering Selection Recommendations

Primary Selection - Direct Manufacturer Equivalent: BK/ABC-3-R is the direct equivalent within the Eaton ABC series, providing identical electrical performance, breaking capacity, and resistance characteristics. This part is recommended for applications requiring exact parameter matching and maintaining original equipment specifications.

Secondary Selection - Same Manufacturer Alternative Series: GBB-3-R and BK/GBB-3-R are Eaton alternatives from the GBB series. GBB-3-R offers increased AC breaking capacity (200A versus 100A) while maintaining all voltage and current ratings. BK/GBB-3-R provides 10kA AC breaking capacity. Both maintain CSA and UR certifications and are suitable for applications where enhanced breaking capacity is beneficial.

Cross-Manufacturer Equivalents: Littelfuse 0314003.HXP and 0314003.MXP provide parametric equivalence with matching current, voltage, and breaking capacity specifications. These parts carry expanded certification coverage (CE, K-MARK, PSE in addition to CSA, UL) and are suitable for applications requiring cross-manufacturer sourcing flexibility. Operating temperature range (-55°C ~ 125°C) is specified for Littelfuse parts.

All substitute parts maintain ROHS3 compliance and Active product status. Selection should be based on application requirements, certification needs, and availability.

Frequently Asked Questions (FAQ)

Q: Can BK/ABC-3-R be used as a direct replacement for ABC-3-R? A: Yes. BK/ABC-3-R is a direct equivalent with identical current rating (3 A), voltage ratings (250 V AC, 125 V DC), breaking capacity (100A AC, 10kA DC), mechanical dimensions (0.250" Dia x 1.250" L), and certifications (CSA, UL). Both require the same 3AB/3AG holder format.

Q: What is the difference between GBB-3-R and BK/GBB-3-R? A: Both are from the Eaton GBB series with identical electrical ratings and dimensions. GBB-3-R has 200A AC breaking capacity, while BK/GBB-3-R has 10kA AC breaking capacity. Both maintain 10kA DC breaking capacity and are certified by CSA and UR.

Q: Are Littelfuse 0314003.HXP and 0314003.MXP interchangeable with ABC-3-R? A: Yes, for parametric equivalence. Both Littelfuse parts match the 3 A current rating, 250 V AC / 125 V DC voltage ratings, 100A AC / 10kA DC breaking capacity, and 3AB/3AG package format. DC cold resistance values are similar (0.0432 Ω versus 0.047 Ω). Littelfuse parts include additional certifications (CE, K-MARK, PSE) and specified operating temperature range (-55°C ~ 125°C).

Q: Do all substitute parts fit the same holder? A: Yes. All substitute parts use the 3AB, 3AG package format with identical mechanical dimensions (0.250" Dia x 1.250" L / 6.35mm x 31.75mm), ensuring compatibility with existing 3AB/3AG fuse holders.

Q: What is the significance of the melting I²t value difference? A: Melting I²t indicates the thermal energy required to melt the fuse element. ABC-3-R and BK/ABC-3-R have I²t of 6.55, while Littelfuse parts (0314003.HXP, 0314003.MXP) have I²t of 14.6. Both values are within acceptable ranges for 3 A fast-blow ceramic cartridge fuses and do not prevent substitution when electrical ratings and breaking capacity match.

Q: Are all substitute parts ROHS3 compliant? A: Yes. All listed substitute parts (BK/ABC-3-R, BK/GBB-3-R, GBB-3-R, 0314003.HXP, 0314003.MXP) maintain ROHS3 compliance status.

Q: Which substitute offers the highest breaking capacity? A: GBB-3-R provides the highest AC breaking capacity at 200A, compared to 100A for ABC-3-R, BK/ABC-3-R, 0314003.HXP, and 0314003.MXP. All maintain 10kA DC breaking capacity.

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