Littelfuse 0322006.HXP Ceramic Cartridge Fuse Equivalent & Substitute Parts

Part Overview

The Littelfuse 0322006.HXP is a 6 A ceramic cartridge fuse rated for 250 V AC and 125 V DC operation with fast-blow response characteristics. This component is classified as obsolete, requiring identification of active equivalent alternatives for continued system support and procurement. The 3AB/3AG form factor (0.250" Dia x 1.250" L) necessitates compatible holder assemblies for installation.

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 of the 0322006.HXP is based on electrical and mechanical parameter equivalence within the ceramic cartridge fuse category. The following criteria determine valid substitutes:

Mandatory Matching Parameters:

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"
Mounting Type: Requires Holder
Operating Temperature Range: -55°C ~ 125°C

All three substitute parts (0314006.HXP, 0314006.MXP, 0314006.VXP) meet these electrical and mechanical requirements. These components are from the active Littelfuse 314 series, providing direct functional replacement for the obsolete 322 series part.

Parameter Comparison

Parameter	0322006.HXP (Main)	0314006.HXP	0314006.MXP	0314006.VXP
Manufacturer	Littelfuse Inc.	Littelfuse Inc.	Littelfuse Inc.	Littelfuse Inc.
Series	322	314	314	314
Product Status	Obsolete	Active	Active	Active
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
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

The 0314006.HXP, 0314006.MXP, and 0314006.VXP are active production alternatives to the obsolete 0322006.HXP. All three substitute parts maintain electrical equivalence across the 6 A, 250 V AC, 125 V DC operating parameters and mechanical compatibility with 3AB/3AG holders.

The substitute parts from the 314 series provide enhanced breaking capacity specifications (750A AC, 10kA DC versus 100A) and higher melting I²t values (45 versus 8.208), representing improved performance characteristics within the same form factor and electrical rating envelope.

Certification coverage expands with the 314 series alternatives, which include CSA, K-MARK, and UL approvals in addition to CE and PSE certifications present on the original part. The 0314006.VXP variant includes KC certification.

Selection among the three substitute options may be determined by packaging requirements (all listed as Bulk) and regional certification needs. All three parts maintain ROHS3 compliance and unlimited moisture sensitivity level (MSL 1).

Frequently Asked Questions (FAQ)

Q: Can the 0314006.HXP, 0314006.MXP, or 0314006.VXP be used as direct replacements for the 0322006.HXP?

A: Yes. All three parts are electrically and mechanically equivalent. They share identical current ratings (6 A), voltage ratings (250 V AC, 125 V DC), fuse type (ceramic cartridge), response time (fast blow), and physical dimensions (0.250" Dia x 1.250" L). They are compatible with the same 3AB/3AG holder assemblies.

Q: What is the difference between the three substitute part numbers?

A: The 0314006.HXP, 0314006.MXP, and 0314006.VXP are functionally equivalent parts from the Littelfuse 314 series. Differences may relate to internal construction variants or regional certification requirements. All three meet the same electrical and mechanical specifications for 6 A, 250 V AC, 125 V DC ceramic cartridge fuse applications.

Q: Are there any performance differences between the 0322006.HXP and the substitute parts?

A: The substitute parts exhibit higher breaking capacity (750A AC, 10kA DC versus 100A) and higher melting I²t values (45 versus 8.208). These represent enhanced performance characteristics. The core electrical ratings and response time remain identical.

Q: What certifications apply to the substitute parts?

A: The 0314006.HXP and 0314006.MXP carry CE, CSA, K-MARK, PSE, and UL certifications. The 0314006.VXP carries CE, CSA, KC, PSE, and UL certifications. All exceed the certification coverage of the original 0322006.HXP (CE, cULus, PSE).

Q: Are the substitute parts RoHS compliant?

A: Yes. All substitute parts are ROHS3 compliant, matching the compliance status of the original part.

Q: What holder types are compatible with these fuses?

A: All parts require a holder assembly compatible with the 3AB or 3AG form factor, 1/4" x 1-1/4" (6.35mm x 31.75mm) dimensions. Existing holders for the 0322006.HXP are compatible with the substitute parts.

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