Littelfuse 0332007.VXP Ceramic Cartridge Fuse Equivalent & Substitute Parts

Part Overview

The Littelfuse 0332007.VXP is a 7 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, necessitating identification of active equivalent alternatives that maintain identical electrical and mechanical specifications for continued system support and procurement.

Key Parameters

Parameter	Specification
Current Rating	7 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 to 125°C
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the obsolete 0332007.VXP is based on strict equivalence of the following critical parameters:

Current Rating: 7 A (exact match required)
Voltage Ratings: 250 V AC and 125 V DC (exact match required)
Fuse Type: Ceramic cartridge with fast-blow response
Physical Package: 3AB/3AG form factor, 1/4" x 1-1/4" dimensions
Mounting: Holder-based installation
Operating Temperature: -55°C to 125°C range
RoHS Compliance: ROHS3 Compliant

All substitute parts listed below meet these criteria and are classified as active products, ensuring ongoing availability and manufacturer support.

Parameter Comparison

Parameter	0332007.VXP (Main)	0314007.VXP	0314007.HXP	0314007.MXP
Manufacturer	Littelfuse Inc.	Littelfuse Inc.	Littelfuse Inc.	Littelfuse Inc.
Current Rating (Amps)	7 A	7 A	7 A	7 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)
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
Product Status	Obsolete	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Approval Agency	CE, cULus, PSE	CE, CSA, KC, PSE, UL	CE, CSA, K-MARK, PSE, UL	CE, CSA, K-MARK, PSE, UL

Engineering Selection Recommendations

All three substitute parts (0314007.VXP, 0314007.HXP, and 0314007.MXP) are direct functional equivalents of the obsolete 0332007.VXP. Selection among these active alternatives should be based on:

Product Status: All substitute parts are classified as active products with ongoing manufacturer support and availability, eliminating obsolescence risk associated with the original part.

Regulatory Compliance: The 0314007.VXP offers expanded certification coverage (CE, CSA, KC, PSE, UL) compared to the original part. The 0314007.HXP and 0314007.MXP provide equivalent certifications (CE, CSA, K-MARK, PSE, UL) with K-MARK designation in place of KC.

Electrical Performance: All substitutes maintain identical current and voltage ratings (7 A, 250 V AC, 125 V DC) with fast-blow response and identical breaking capacity specifications (750 A AC, 10 kA DC).

Physical Compatibility: All substitutes share identical package dimensions and holder requirements (3AB/3AG, 1/4" x 1-1/4"), ensuring direct mechanical compatibility with existing fuse holders.

Frequently Asked Questions (FAQ)

Q: Can the 0314007.VXP, 0314007.HXP, and 0314007.MXP be used interchangeably with the 0332007.VXP?

A: Yes. All three parts meet identical electrical specifications (7 A, 250 V AC, 125 V DC, fast-blow ceramic cartridge) and physical package requirements (3AB/3AG, 1/4" x 1-1/4"). They are mechanically and electrically interchangeable.

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

A: The substitute parts differ in regulatory certifications and internal design characteristics. The 0314007.VXP includes KC certification, while 0314007.HXP and 0314007.MXP include K-MARK certification. All three are active products with equivalent performance.

Q: Why is the original 0332007.VXP classified as obsolete?

A: The 0332007.VXP has been discontinued by the manufacturer. The 0314 series represents the current active product line for this fuse specification, offering improved certifications and ongoing support.

Q: Are there any compatibility concerns when replacing the 0332007.VXP with a substitute?

A: No compatibility concerns exist. The substitute parts use identical holder requirements and physical dimensions. Direct replacement in existing fuse holders is supported without modification.

Q: Which substitute part should be selected for new designs?

A: For new designs, any of the three active substitutes (0314007.VXP, 0314007.HXP, or 0314007.MXP) are appropriate. Selection should be based on regional certification requirements and supply chain availability.

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