Littelfuse 0312015.VXP Glass Cartridge Fuse 15A 32VAC Equivalent & Substitute Parts

Part Overview

The Littelfuse 0312015.VXP is a 15A 32VAC glass cartridge fuse designed for fast-blow protection in AC/DC circuits. This component is classified as Active product status and is widely used in industrial and commercial electrical systems requiring reliable overcurrent protection. Equivalent and substitute parts are identified based on matching electrical ratings, mechanical dimensions, and approval certifications to ensure direct interchangeability in holder-based fuse applications.

Key Parameters

Parameter	Value
Current Rating	15 A
Voltage Rating (AC)	32 V
Fuse Type	Cartridge, Glass
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)
Breaking Capacity @ Rated Voltage	300A
Operating Temperature Range	-55°C ~ 125°C
Approval Agency	CSA, UL
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitute parts for the Littelfuse 0312015.VXP are qualified based on the following critical parameters:

Current Rating: 15 A (exact match required)
Voltage Rating (AC): 32 V (exact match required)
Fuse Type: Cartridge, Glass (exact match required)
Response Time: Fast Blow (exact match required)
Package / Case: 3AB, 3AG, 1/4" x 1-1/4" (exact match required)
Size / Dimension: 0.250" Dia x 1.250" L (exact match required)
Operating Temperature Range: -55°C ~ 125°C (exact match required)
Approval Agency: CSA and/or UL certification (required for regulatory compliance)
RoHS Status: ROHS3 Compliant (required for environmental compliance)

All identified substitute parts meet these criteria and are direct functional equivalents suitable for replacement in applications requiring 15A 32VAC fast-blow glass cartridge fuses in 3AB/3AG holders.

Parameter Comparison

Parameter	0312015.VXP (Littelfuse)	0312015.HXP (Littelfuse)	0312015.MXP (Littelfuse)	BK/AGC-15-R (Eaton)
Manufacturer	Littelfuse Inc.	Littelfuse Inc.	Littelfuse	Eaton - Electronics Division
Current Rating (Amps)	15 A	15 A	15 A	15 A
Voltage Rating - AC	32 V	32 V	32 V	32 V
Fuse Type	Cartridge, Glass	Cartridge, Glass	Cartridge, Glass	Cartridge, Glass
Response Time	Fast Blow	Fast Blow	Fast Blow	Fast Blow
Package / Case	3AB, 3AG, 1/4" x 1-1/4"	3AB, 3AG, 1/4" x 1-1/4"	3AB, 3AG, 1/4" x 1-1/4"	3AB, 3AG, 1/4" x 1-1/4"
Size / Dimension	0.250" Dia x 1.250" L (6.35mm x 31.75mm)	0.250" Dia x 1.250" L (6.35mm x 31.75mm)	0.250" Dia x 1.250" L (6.35mm x 31.75mm)	0.250" Dia x 1.250" L (6.35mm x 31.75mm)
Breaking Capacity @ Rated Voltage	300A	300A	300A	1kA
Melting I²t	490.5	490.5	490.5	807.75
DC Cold Resistance	0.0052 Ohms	0.0052 Ohms	0.0052 Ohms	0.005 Ohms
Approval Agency	CSA, UL	CSA, cULus	CSA, cULus	CSA, UL
Operating Temperature	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Active	Active	Active	Active

Engineering Selection Recommendations

All four parts listed—0312015.VXP, 0312015.HXP, 0312015.MXP, and BK/AGC-15-R—are Active product status components with full regulatory compliance. Selection among these equivalents should be based on:

Littelfuse 0312015.HXP and 0312015.MXP are direct parametric equivalents to the primary part 0312015.VXP, differing only in approval agency designation (cULus versus UL). These parts are suitable for applications requiring CSA and cULus certification.

Eaton BK/AGC-15-R is a parametric equivalent with higher breaking capacity (1kA versus 300A) and higher melting I²t (807.75 versus 490.5). This part is suitable for applications where enhanced fault current handling is required while maintaining the same electrical ratings and physical dimensions.

All parts carry ROHS3 compliance and are suitable for environmental and regulatory requirements in industrial and commercial applications.

Frequently Asked Questions (FAQ)

Q: Can 0312015.HXP or 0312015.MXP be used as direct replacements for 0312015.VXP?

A: Yes. Both parts are parametric equivalents with identical electrical ratings (15A 32VAC), response time (Fast Blow), physical dimensions (0.250" Dia x 1.250" L), and package specifications (3AB, 3AG). The primary difference is the approval agency designation. Selection depends on certification requirements for your specific application.

Q: What is the difference between the Littelfuse and Eaton fuses?

A: The Eaton BK/AGC-15-R has a higher breaking capacity (1kA versus 300A) and higher melting I²t (807.75 versus 490.5). All other electrical and mechanical parameters are identical. The Eaton part is suitable for applications requiring higher fault current protection capability.

Q: Are these fuses compatible with 3AB and 3AG holders?

A: Yes. All listed parts are specified for 3AB and 3AG holders with matching physical dimensions of 0.250" Dia x 1.250" L (6.35mm x 31.75mm). They are mechanically and electrically compatible with standard holders for these package types.

Q: What certifications do these fuses carry?

A: All parts carry CSA and UL or cULus certifications. The 0312015.VXP and BK/AGC-15-R carry CSA and UL. The 0312015.HXP and 0312015.MXP carry CSA and cULus. All parts are ROHS3 compliant.

Q: Can I use BK/AGC-15-R in place of 0312015.VXP?

A: Yes. The BK/AGC-15-R is a parametric equivalent with identical voltage, current, response time, and physical specifications. The higher breaking capacity and melting I²t provide enhanced fault protection capability while maintaining compatibility with existing 3AB/3AG holders.

Q: What is the operating temperature range for these fuses?

A: All listed parts operate within the range of -55°C to 125°C, ensuring reliable performance across standard industrial and commercial temperature environments.

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