Littelfuse 0332010.HXP Ceramic Fuse Cartridge – Equivalent & Substitute Parts

Part Overview

The Littelfuse 0332010.HXP is a 10 A ceramic fuse cartridge rated for 250 V AC and 125 V DC operation. This component is classified as obsolete, which necessitates identification of active equivalent alternatives for ongoing procurement and system maintenance. The part is designed for fast-blow response in applications requiring 3AB, 3AG holder compatibility with 1/4" x 1-1/4" form factor dimensions.

Key Parameters

Parameter	Value
Current Rating	10 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)
Operating Temperature Range	-55°C ~ 125°C
RoHS Status	ROHS3 Compliant
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict equivalence across the following parameters:

Current Rating: 10 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)
Size / Dimension: 0.250" Dia x 1.250" L (exact match required)
Operating Temperature Range: -55°C ~ 125°C (exact match required)

All identified substitute parts meet these criteria. The primary distinction between the main part (0332010.HXP, Series 332) and substitute parts (Series 314 variants) is product status and breaking capacity specifications. Series 314 parts are active production items with enhanced breaking capacity ratings, while Series 332 parts are obsolete.

Parameter Comparison

Parameter	0332010.HXP (Main)	0314010.HXP	0314010.MXANP	0314010.MXP	0314010.VXP	0332010.MXP
Current Rating (Amps)	10 A	10 A	10 A	10 A	10 A	10 A
Voltage Rating – AC	250 V	250 V	250 V	250 V	250 V	250 V
Voltage Rating – DC	125 V	125 V	125 V	125 V	125 V	125 V
Fuse Type	Cartridge, Ceramic	Cartridge, Ceramic	Cartridge, Ceramic	Cartridge, Ceramic	Cartridge, Ceramic	Cartridge, Ceramic
Response Time	Fast Blow	Fast Blow	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"	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)	0.250" Dia x 1.250" L (6.35mm x 31.75mm)	0.250" Dia x 1.250" L (6.35mm x 31.75mm)
Operating Temperature Range	-55°C ~ 125°C	-55°C ~ 125°C	-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	ROHS3 Compliant	ROHS3 Compliant
Product Status	Obsolete	Active	Active	Active	Active	Obsolete
Breaking Capacity @ Rated Voltage	100A	750A AC, 10kA DC	750A AC, 10kA DC	750A AC, 10kA DC	750A AC, 10kA DC	100A
Melting I²t	24	206	206	206	206	24
DC Cold Resistance	0.0073 Ohms	0.0105 Ohms	0.0105 Ohms	0.0105 Ohms	0.0105 Ohms	0.0073 Ohms
Approval Agency	CE, cULus, PSE	CE, CSA, K-MARK, PSE, UL	CE, CSA, K-MARK, PSE, UL	CE, CSA, K-MARK, PSE, UL	CE, CSA, KC, PSE, UL	CE, cULus, PSE

Engineering Selection Recommendations

For new designs and ongoing procurement, Series 314 variants (0314010.HXP, 0314010.MXANP, 0314010.MXP, 0314010.VXP) are the primary substitutes for the obsolete 0332010.HXP. All Series 314 parts maintain identical electrical and mechanical specifications while offering active product status and enhanced breaking capacity ratings.

Series 314 parts provide broader regulatory approval coverage, including CSA, K-MARK, and UL certifications in addition to CE and PSE. The increased breaking capacity (750A AC, 10kA DC versus 100A) and higher melting I²t value (206 versus 24) represent design improvements in the Series 314 generation.

The 0332010.MXP variant remains available as an alternative within the obsolete Series 332 line but does not offer the advantages of active production status or enhanced performance characteristics.

Frequently Asked Questions (FAQ)

Q: Can Series 314 parts directly replace Series 332 parts in existing applications?

A: Yes. All Series 314 variants (0314010.HXP, 0314010.MXANP, 0314010.MXP, 0314010.VXP) are direct mechanical and electrical replacements for 0332010.HXP. They share identical current rating, voltage rating, fuse type, response time, package designation, physical dimensions, and operating temperature range. The enhanced breaking capacity and melting I²t characteristics of Series 314 parts represent performance improvements compatible with existing holder assemblies.

Q: What is the difference between 0314010.HXP, 0314010.MXANP, 0314010.MXP, and 0314010.VXP?

A: All four parts are parametrically equivalent with identical electrical and mechanical specifications. The suffix designations (HXP, MXANP, MXP, VXP) indicate different packaging or certification variants within the Series 314 product line. Selection among these variants depends on specific procurement requirements and regulatory certifications applicable to the end application.

Q: Are there any compatibility concerns with holder assemblies?

A: No. All substitute parts conform to the 3AB, 3AG, 1/4" x 1-1/4" package specification and 0.250" Dia x 1.250" L physical dimensions, ensuring full compatibility with existing holder assemblies designed for the original 0332010.HXP part.

Q: Why do Series 314 parts have higher breaking capacity and melting I²t values?

A: These represent design improvements in the Series 314 generation. The increased breaking capacity (750A AC, 10kA DC) and melting I²t (206) provide enhanced performance margins while maintaining identical response characteristics for the specified 10 A fast-blow application.

Q: Which substitute part should be selected for new designs?

A: Any Series 314 variant (0314010.HXP, 0314010.MXANP, 0314010.MXP, 0314010.VXP) is suitable for new designs. Selection should be based on packaging requirements, regulatory certifications needed for the target market, and component availability. All variants are active production items with equivalent electrical performance.

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