Littelfuse 0322006.MXP Ceramic Cartridge Fuse - Equivalent & Substitute Parts

Part Overview

The Littelfuse 0322006.MXP is a 6 A, 250 V AC / 125 V DC ceramic cartridge fuse with fast-blow response characteristics. This component is classified as obsolete, necessitating identification of active equivalent alternatives for ongoing system support and procurement. The fuse is designed for applications requiring reliable overcurrent protection in industrial and commercial equipment with standard 3AB, 3AG holder compatibility.

Key Parameters

Parameter	Value
Current Rating	6 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 eligibility for the 0322006.MXP is determined by strict equivalence across the following parameters:

Current Rating: 6 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 three substitute parts—0314006.HXP, 0314006.MXP, and 0314006.VXP—meet these criteria. These components are from the active Littelfuse 314 series and provide direct functional equivalence to the obsolete 322 series part.

Parameter Comparison

Parameter	0322006.MXP (Main)	0314006.HXP	0314006.MXP	0314006.VXP
Manufacturer	Littelfuse Inc.	Littelfuse Inc.	Littelfuse Inc.	Littelfuse Inc.
Current Rating (Amps)	6 A	6 A	6 A	6 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
Product Status	Obsolete	Active	Active	Active
Breaking Capacity @ Rated Voltage	100A	750A AC, 10kA DC	750A AC, 10kA DC	750A AC, 10kA DC
Melting I²t	8.208	45	45	45
DC Cold Resistance	0.0117 Ohms	0.024 Ohms	0.024 Ohms	0.024 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

All three substitute parts—0314006.HXP, 0314006.MXP, and 0314006.VXP—are direct parametric equivalents to the obsolete 0322006.MXP. Selection among these active alternatives should be based on the following factors:

Product Status: All substitute parts are classified as active, ensuring long-term availability and supply chain continuity compared to the obsolete main part.

Compliance & Certifications: The 314 series substitutes carry expanded regulatory approvals. The 0314006.HXP and 0314006.MXP include CE, CSA, K-MARK, PSE, and UL certifications. The 0314006.VXP includes CE, CSA, KC, PSE, and UL certifications. These certifications exceed those of the original 322 series part (CE, cULus, PSE), providing broader market acceptance.

Packaging: All substitute parts are supplied in bulk packaging, which may differ from the original part's packaging specification. Verify packaging requirements for your procurement process.

Inventory Availability: Current stock levels are 1068 pcs (0314006.HXP), 989 pcs (0314006.MXP), and 1190 pcs (0314006.VXP), providing multiple sourcing options.

Frequently Asked Questions (FAQ)

Q: Can the 0314006 series parts directly replace the 0322006.MXP in existing applications?

A: Yes. The 0314006.HXP, 0314006.MXP, and 0314006.VXP are parametric equivalents with identical current ratings (6 A), voltage ratings (250 V AC / 125 V DC), fuse type (ceramic cartridge), response time (fast blow), and physical dimensions (3AB, 3AG, 1/4" x 1-1/4"). All are compatible with standard 3AB and 3AG fuse holders.

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

A: The 0314006.HXP, 0314006.MXP, and 0314006.VXP are functionally equivalent across all critical electrical and mechanical parameters. Differences exist only in regulatory certifications: 0314006.HXP and 0314006.MXP include K-MARK certification, while 0314006.VXP includes KC certification. Selection should be based on regional compliance requirements and inventory availability.

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

A: The 314 series substitutes (breaking capacity: 750A AC, 10kA DC; melting I²t: 45) represent an improved design generation compared to the 322 series original (breaking capacity: 100A; melting I²t: 8.208). These enhanced characteristics provide superior performance margins while maintaining identical response characteristics and current ratings.

Q: Are there packaging differences between the main part and substitutes?

A: Yes. The original 0322006.MXP packaging specification is not detailed in the provided data. The substitute parts are supplied in bulk packaging. Confirm packaging requirements with your procurement specification before ordering.

Q: Which substitute part should I select?

A: All three parts are functionally equivalent. Selection should be based on: (1) regional regulatory requirements matching your target certifications, (2) current inventory availability, and (3) packaging format compatibility with your assembly process.

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