Littelfuse 0322015.H Ceramic Cartridge Fuse Equivalent & Substitute Parts

Part Overview

The Littelfuse 0322015.H is a 15 A, 65 V AC/DC ceramic cartridge fuse designed for fast-blow protection in 3AB and 3AG holder configurations. This part is classified as obsolete, making equivalent substitutes necessary for ongoing system maintenance and new designs. The substitute parts listed maintain identical electrical and mechanical specifications while offering improved compliance status and active product availability.

Key Parameters

Parameter	Value
Current Rating	15 A
Voltage Rating (AC)	65 V
Voltage Rating (DC)	65 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	200 A
DC Cold Resistance	0.0043 Ohms

Substitute Part Grouping Explanation

Substitution eligibility for the 0322015.H is determined by strict equivalence across the following parameters:

Current Rating: 15 A (exact match required)
Voltage Rating: 65 V AC and 65 V DC (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)

All three substitute parts (0322015.HXP, 0322015.MXP, 0322015.VXP) meet these criteria and are therefore direct parametric equivalents. The substitutes differ only in packaging format (bulk) and compliance certifications, with no impact on electrical or mechanical performance.

Parameter Comparison

Parameter	0322015.H (Main)	0322015.HXP	0322015.MXP	0322015.VXP
Current Rating (Amps)	15 A	15 A	15 A	15 A
Voltage Rating - AC	65 V	65 V	65 V	65 V
Voltage Rating - DC	65 V	65 V	65 V	65 V
Fuse Type	Cartridge, Ceramic	Cartridge, Ceramic	Cartridge, Ceramic	Cartridge, Ceramic
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)
DC Cold Resistance	0.0043 Ohms	0.0043 Ohms	0.0043 Ohms	0.0043 Ohms
Breaking Capacity @ Rated Voltage	200 A	200 A AC, 1 kA DC	200 A AC, 1 kA DC	200 A AC, 1 kA DC
Melting I²t	Not specified	90	90	90
Product Status	Obsolete	Active	Active	Active
RoHS Status	RoHS non-compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Approval Agency	UL	CE, UL	CE, UL	CE, UL
Operating Temperature	Not specified	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C

Engineering Selection Recommendations

All three substitute parts (0322015.HXP, 0322015.MXP, 0322015.VXP) are direct parametric equivalents to the obsolete 0322015.H. Selection among these substitutes should be based on the following factors:

Product Status: All substitutes are active products with current manufacturing support, eliminating supply chain risk associated with the obsolete main part.

Compliance Certifications: The main part carries UL approval only. All substitutes carry both CE and UL certifications, providing broader regulatory acceptance. All substitutes are ROHS3 compliant, whereas the main part is RoHS non-compliant.

Environmental Specifications: Substitute parts provide documented operating temperature range (-55°C ~ 125°C), whereas the main part does not specify this parameter.

Breaking Capacity: Substitute parts specify enhanced breaking capacity for DC applications (1 kA DC versus unspecified for the main part), providing additional margin in high-fault-current environments.

Packaging: The main part is supplied in standard packaging; substitutes are supplied in bulk packaging. Packaging selection depends on procurement volume requirements.

Frequently Asked Questions (FAQ)

Q: Can 0322015.HXP, 0322015.MXP, and 0322015.VXP be used interchangeably with 0322015.H?

A: Yes. All three substitute parts are parametric equivalents with identical electrical and mechanical specifications: 15 A current rating, 65 V AC/DC voltage rating, fast-blow response, ceramic cartridge construction, and 3AB/3AG holder compatibility. The substitutes differ only in packaging format and compliance certifications.

Q: What is the difference between the three substitute parts?

A: The three substitute parts (0322015.HXP, 0322015.MXP, 0322015.VXP) are electrically and mechanically identical. All carry the same current rating, voltage rating, response time, and physical dimensions. Differences are limited to packaging format (all bulk) and internal manufacturing variations. Selection among these parts should be based on availability and procurement preferences.

Q: Why is the main part 0322015.H classified as obsolete?

A: The 0322015.H is obsolete due to its RoHS non-compliant status and lack of CE certification. The substitute parts address these compliance gaps while maintaining full electrical and mechanical equivalence.

Q: Are the substitute parts compatible with existing 3AB and 3AG fuse holders?

A: Yes. All substitute parts maintain the identical 1/4" x 1-1/4" (6.35mm x 31.75mm) physical dimensions and are designed for 3AB and 3AG holder configurations. No holder modifications are required.

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

A: The substitute parts (0322015.HXP, 0322015.MXP, 0322015.VXP) operate across -55°C to 125°C. The main part does not specify an operating temperature range.

Q: Do the substitute parts have higher breaking capacity than the main part?

A: The substitute parts specify 200 A AC and 1 kA DC breaking capacity. The main part specifies 200 A breaking capacity without DC differentiation. The substitute parts provide documented DC breaking capacity, which is relevant for applications with high DC fault currents.

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