Littelfuse 0332005.HXP Ceramic Fuse Cartridge – Equivalent & Substitute Parts

Part Overview

The Littelfuse 0332005.HXP is a 5 A ceramic fuse cartridge rated for 250 V AC and 125 V DC operation. This component is classified as obsolete, requiring identification of active equivalent alternatives for continued system support and procurement. The 3AB/3AG form factor (1/4" x 1-1/4") with fast-blow response characteristics defines the functional requirements for direct substitution.

Key Parameters

Parameter	Value
Current Rating	5 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
Operating Temperature Range	-55°C ~ 125°C
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the 0332005.HXP is determined by strict equivalence across the following parameters:

Current Rating: 5 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)
Operating Temperature Range: -55°C ~ 125°C (exact match required)

All substitute parts listed below meet these criteria and are sourced from Littelfuse Inc., the original manufacturer. Substitutes are grouped by product status and availability.

Parameter Comparison

Parameter	0332005.HXP (Main)	0314005.HXP	0314005.MXP	0314005.VXP
Manufacturer	Littelfuse Inc.	Littelfuse Inc.	Littelfuse Inc.	Littelfuse Inc.
Series	332	314	314	314
Product Status	Obsolete	Active	Active	Active
Current Rating (Amps)	5 A	5 A	5 A	5 A
Voltage Rating – AC	250 V	250 V	250 V	250 V
Voltage Rating – DC	125 V	125 V	125 V	125 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)
Operating Temperature	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C
Breaking Capacity @ Rated Voltage	100A	750A AC, 10kA DC	750A AC, 10kA DC	750A AC, 10kA DC
Melting I²t	6.25	26	26	26
DC Cold Resistance	0.0128 Ohms	0.03 Ohms	0.03 Ohms	0.03 Ohms
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Approval Agency	CE, cULus, PSE	CE, CSA, K-MARK, PSE, UL	CE, CSA, K-MARK, PSE, UL	CE, CSA, KC, PSE, UL

Engineering Selection Recommendations

The 0332005.HXP is obsolete and no longer in active production. Direct functional equivalents are available from Littelfuse Inc. within the Series 314 product line.

Primary Substitute: 0314005.HXP

The 0314005.HXP is the manufacturer-recommended substitute. It maintains all critical electrical parameters (5 A, 250 V AC, 125 V DC, fast-blow ceramic cartridge) and identical mechanical form factor. This part is active and carries expanded regulatory approvals including UL and CSA certification, in addition to CE and PSE. Breaking capacity is significantly higher (750A AC, 10kA DC versus 100A), providing enhanced protection margin.

Parametric Equivalents: 0314005.MXP and 0314005.VXP

Both 0314005.MXP and 0314005.VXP are parametric equivalents meeting all functional requirements. The 0314005.MXP offers the highest inventory availability (6627 pcs). The 0314005.VXP includes KC certification in addition to standard approvals. Both parts share identical electrical specifications and mechanical compatibility with the original 0332005.HXP.

All three substitute parts are active products with current manufacturing support and regulatory compliance documentation.

Frequently Asked Questions (FAQ)

Q: Can the 0314005.HXP, 0314005.MXP, or 0314005.VXP be used as direct replacements for the 0332005.HXP?

A: Yes. All three parts are direct functional equivalents. They maintain identical current rating (5 A), voltage ratings (250 V AC, 125 V DC), fuse type (ceramic cartridge), response time (fast-blow), and mechanical form factor (3AB/3AG, 1/4" x 1-1/4"). They are compatible with existing fuse holders designed for the 0332005.HXP.

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

A: The 0314005.HXP is the manufacturer-recommended substitute. The 0314005.MXP and 0314005.VXP are parametric equivalents with identical electrical and mechanical specifications. Differences exist only in regulatory certifications and inventory levels. The 0314005.MXP has the highest stock availability.

Q: Why do the substitute parts have higher breaking capacity and melting I²t values?

A: The Series 314 fuses incorporate improved design characteristics compared to the obsolete Series 332. Higher breaking capacity (750A AC, 10kA DC) and melting I²t (26 versus 6.25) represent enhanced performance margins. These parameters do not affect compatibility or substitution suitability; they indicate superior protective characteristics.

Q: Are there any compliance or certification differences?

A: The 0332005.HXP carries CE, cULus, and PSE approvals. All three substitute parts maintain these certifications and add CSA and UL approvals. The 0314005.VXP includes additional KC certification. Expanded certifications provide broader regulatory acceptance without compromising compatibility.

Q: Does the slightly higher DC cold resistance (0.03 Ohms versus 0.0128 Ohms) affect circuit performance?

A: No. The DC cold resistance difference is within acceptable tolerance for fuse cartridge applications and does not impact circuit operation or protection characteristics. Both values are typical for ceramic fuse cartridges in this current and voltage class.

Q: Which substitute should be selected for new designs?

A: For new designs, select from the active Series 314 line (0314005.HXP, 0314005.MXP, or 0314005.VXP). All three are equivalent. Selection may be based on availability, certification requirements, or supplier preference. The 0314005.MXP offers the highest inventory availability.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message