Littelfuse 0322008.HXP Ceramic Cartridge Fuse - Equivalent & Substitute Parts

Part Overview

The Littelfuse 0322008.HXP is an 8 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 that maintain identical electrical and mechanical specifications. The fuse requires a compatible holder (3AB, 3AG format) and is designed for applications requiring reliable overcurrent protection across industrial and commercial equipment.

Key Parameters

Parameter	Value
Current Rating	8 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 obsolete 0322008.HXP is based on strict equivalence of the following critical parameters:

Current Rating: 8 A (exact match required)
Voltage Rating: 250 V AC / 125 V DC (exact match required)
Fuse Type: Ceramic cartridge with fast-blow response
Physical Package: 3AB, 3AG format, 1/4" x 1-1/4" dimensions
Mounting: Requires compatible holder
Operating Temperature: -55°C ~ 125°C range
Compliance: ROHS3 compliant

All three substitute parts (0314008.HXP, 0314008.MXP, 0314008.VXP) from the Littelfuse 314 series meet these equivalence criteria and are classified as active products, ensuring continued availability and support.

Parameter Comparison

Parameter	0322008.HXP (Main)	0314008.HXP	0314008.MXP	0314008.VXP
Manufacturer	Littelfuse Inc.	Littelfuse Inc.	Littelfuse Inc.	Littelfuse Inc.
Series	322	314	314	314
Product Status	Obsolete	Active	Active	Active
Current Rating (Amps)	8 A	8 A	8 A	8 A
Voltage Rating - AC	250 V	250 V	250 V	250 V
Voltage Rating - DC	125 V	125 V	125 V	125 V
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)
Mounting Type	Requires Holder	Requires Holder	Requires Holder	Requires Holder
Operating Temperature	-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
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 from the Littelfuse 314 series provide direct functional equivalence to the obsolete 0322008.HXP. Selection among the active alternatives should be based on the following factors:

Product Availability: The 314 series parts are all classified as active products with current manufacturing status, ensuring long-term supply chain reliability compared to the obsolete 322 series.

Regulatory Compliance: All substitute parts maintain ROHS3 compliance and carry expanded approval certifications (CE, CSA, K-MARK, PSE, UL for 0314008.HXP and 0314008.MXP; CE, CSA, KC, PSE, UL for 0314008.VXP), providing broader geographic and application coverage than the original part.

Electrical Equivalence: All three substitutes maintain identical current ratings (8 A), voltage ratings (250 V AC / 125 V DC), and response characteristics (fast-blow), ensuring direct functional replacement in existing circuit designs.

Mechanical Compatibility: All substitute parts use the identical 3AB, 3AG cartridge format with 1/4" x 1-1/4" dimensions, ensuring direct physical compatibility with existing fuse holders without modification.

Frequently Asked Questions (FAQ)

Q: Can the 0314008.HXP, 0314008.MXP, and 0314008.VXP be used interchangeably with the 0322008.HXP?

A: Yes. All three substitute parts meet the electrical and mechanical equivalence criteria for the obsolete 0322008.HXP. They share identical current ratings (8 A), voltage ratings (250 V AC / 125 V DC), fuse type (ceramic cartridge, fast-blow), and physical dimensions (1/4" x 1-1/4"). All are compatible with 3AB and 3AG fuse holders.

Q: What is the primary reason for substitution?

A: The 0322008.HXP is classified as obsolete. The Littelfuse 314 series alternatives (0314008.HXP, 0314008.MXP, 0314008.VXP) are active products with current manufacturing support, ensuring continued availability and supply chain stability.

Q: Are there differences in breaking capacity between the main part and substitutes?

A: Yes. The 0322008.HXP has a breaking capacity of 100 A at rated voltage. The substitute parts (0314008.HXP, 0314008.MXP, 0314008.VXP) have higher breaking capacities of 750 A AC and 10 kA DC. This represents an improvement in fault protection capability and does not affect compatibility in standard applications.

Q: Do the substitute parts require different holders?

A: No. All substitute parts use the same 3AB, 3AG cartridge format and 1/4" x 1-1/4" dimensions as the original part. Existing fuse holders are fully compatible without modification.

Q: What certifications do the substitute parts carry?

A: The 0314008.HXP and 0314008.MXP carry CE, CSA, K-MARK, PSE, and UL certifications. The 0314008.VXP carries CE, CSA, KC, PSE, and UL certifications. All exceed the certifications of the original 0322008.HXP (CE, cULus, PSE).

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All three substitute parts (0314008.HXP, 0314008.MXP, 0314008.VXP) are ROHS3 compliant, matching the compliance status of the original 0322008.HXP.

Q: What is the operating temperature range for the substitute parts?

A: All substitute parts operate across the identical temperature range of -55°C to 125°C, matching the original part specification.

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