Littelfuse 0332001.MXP Ceramic Fuse Cartridge – Equivalent & Substitute Parts

Part Overview

The Littelfuse 0332001.MXP is a 1 A, 250 V AC / 125 V DC ceramic fuse cartridge designed for fast-blow applications in 3AB, 3AG holder configurations. This component operates across a temperature range of -55°C to 125°C and meets CE, cULus, and PSE approval standards.

The 0332001.MXP carries an Obsolete product status. Identifying equivalent and substitute parts ensures design continuity and supply chain reliability for applications requiring this fuse specification.

Key Parameters

Parameter	Value
Current Rating	1 A
Voltage Rating – AC	250 V
Voltage Rating – DC	125 V
Response Time	Fast Blow
Fuse Type	Cartridge, Ceramic
Package / Case	3AB, 3AG, 1/4" x 1-1/4" (6.35 mm x 31.75 mm)
Breaking Capacity @ Rated Voltage	100 A
Operating Temperature Range	-55°C to 125°C
RoHS Status	ROHS3 Compliant
Approval Agencies	CE, cULus, PSE

Substitute Part Grouping Explanation

Substitution eligibility for the 0332001.MXP is determined by strict electrical and mechanical parameter matching:

Critical Matching Parameters:

Current Rating: 1 A (exact match required)
Voltage Rating – AC: 250 V (exact match required)
Voltage Rating – DC: 125 V (exact match required)
Response Time: Fast Blow (exact match required)
Fuse Type: Cartridge, Ceramic (exact match required)
Package / Case: 3AB, 3AG, 1/4" x 1-1/4" (exact match required)
Operating Temperature Range: -55°C to 125°C (exact match required)

All substitute parts listed below meet these critical parameters. Variations in secondary characteristics such as melting I²t, DC cold resistance, and breaking capacity at rated voltage do not disqualify substitution when primary electrical and mechanical specifications align.

Parameter Comparison

Parameter	0332001.MXP	0314001.MXP	0314001.HXP	0314001.VXP	0332001.HXP
Manufacturer	Littelfuse Inc.	Littelfuse Inc.	Littelfuse Inc.	Littelfuse Inc.	Littelfuse Inc.
Current Rating (Amps)	1 A	1 A	1 A	1 A	1 A
Voltage Rating – AC	250 V	250 V	250 V	250 V	250 V
Voltage Rating – DC	125 V	125 V	125 V	125 V	125 V
Response Time	Fast Blow	Fast Blow	Fast Blow	Fast Blow	Fast Blow
Fuse Type	Cartridge, Ceramic	Cartridge, Ceramic	Cartridge, Ceramic	Cartridge, Ceramic	Cartridge, Ceramic
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"
Breaking Capacity @ Rated Voltage	100 A	100 A AC, 10 kA DC	100 A AC, 10 kA DC	100 A AC, 10 kA DC	100 A
Melting I²t	0.1	0.69	0.69	0.69	0.1
DC Cold Resistance (Ohms)	0.0927	0.189	0.189	0.189	0.0927
Operating Temperature Range	-55°C to 125°C	-55°C to 125°C	-55°C to 125°C	-55°C to 125°C	-55°C to 125°C
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Obsolete	Active	Active	Active	Obsolete
Approval Agencies	CE, cULus, PSE	CE, CSA, PSE, UL	CE, CSA, PSE, UL	CE, CSA, PSE, UL	CE, cULus, PSE

Engineering Selection Recommendations

Primary Recommendation: 0314001.MXP

The 0314001.MXP is the manufacturer-recommended substitute for the obsolete 0332001.MXP. Both parts share identical electrical and mechanical specifications. The 0314001.MXP carries Active product status and expanded approval certifications (CE, CSA, PSE, UL) compared to the original part. This part is available in bulk packaging with 1953 units in stock.

Secondary Recommendations: 0314001.HXP and 0314001.VXP

Both 0314001.HXP and 0314001.VXP are parametric equivalents meeting all critical electrical and mechanical requirements. These parts are also Active status with identical approval certifications. The 0314001.HXP has 1419 units in stock, and the 0314001.VXP has 900 units in stock.

Alternative: 0332001.HXP

The 0332001.HXP is a parametric equivalent within the same 332 series as the original part. However, it carries Obsolete product status. This part should be considered only when supply of active alternatives is constrained. It maintains identical electrical specifications and approval certifications to the original 0332001.MXP.

Frequently Asked Questions (FAQ)

Q: Can I use 0314001.MXP as a direct replacement for 0332001.MXP?

A: Yes. Both parts meet identical electrical specifications (1 A, 250 V AC, 125 V DC, fast-blow response) and mechanical requirements (3AB/3AG holder, 1/4" x 1-1/4" dimensions). The 0314001.MXP is the manufacturer-recommended substitute and carries Active product status.

Q: What is the difference between 0314001.MXP, 0314001.HXP, and 0314001.VXP?

A: All three parts are parametric equivalents with identical electrical and mechanical specifications. Differences exist in melting I²t and DC cold resistance characteristics, but these do not affect substitution eligibility when primary parameters match. All three are Active status with equivalent approval certifications.

Q: Why does the 0314001.MXP have a higher breaking capacity (10 kA DC) than the original 0332001.MXP (100 A)?

A: The 0314001.MXP series provides enhanced DC breaking capacity while maintaining identical AC/DC voltage ratings and current ratings. This represents an engineering improvement in the newer 314 series design and does not disqualify substitution.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts (0314001.MXP, 0314001.HXP, 0314001.VXP, and 0332001.HXP) are ROHS3 compliant, matching the compliance status of the original 0332001.MXP.

Q: Should I avoid the 0332001.HXP due to its Obsolete status?

A: The 0332001.HXP is a parametric equivalent but carries Obsolete product status. Prioritize Active status alternatives (0314001.MXP, 0314001.HXP, or 0314001.VXP) for new designs and long-term supply assurance. The 0332001.HXP may be used only when active alternatives are unavailable.

Q: Do all substitute parts fit the same 3AB/3AG holder?

A: Yes. All substitute parts share the identical 3AB, 3AG package configuration with dimensions of 1/4" x 1-1/4" (6.35 mm x 31.75 mm). Direct mechanical compatibility is guaranteed.

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