Littelfuse 0322010.MXP Ceramic Cartridge Fuse - Equivalent & Substitute Parts

Part Overview

The Littelfuse 0322010.MXP is a 10 A ceramic cartridge fuse rated for 250 V AC and 125 V DC operation. This component is classified as obsolete, which necessitates identification of active equivalent alternatives for ongoing system support and procurement. The fuse is designed for fast-blow response characteristics and requires a compatible holder (3AB, 3AG format, 1/4" x 1-1/4" dimensions). Substitute parts must maintain electrical and mechanical compatibility while meeting current manufacturing and compliance standards.

Key Parameters

Parameter	Value
Current Rating	10 A
Voltage Rating - AC	250 V
Voltage Rating - DC	125 V
Response Time	Fast Blow
Fuse Type	Cartridge, Ceramic
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 is determined by strict equivalence across the following parameters:

Current Rating: 10 A (exact match required)
Voltage Rating - AC: 250 V (exact match required)
Voltage Rating - DC: 125 V (exact match required)
Response Time: Fast Blow (exact match required)
Fuse Type: Cartridge, Ceramic (exact match required)
Package / Case: 3AB, 3AG, 1/4" x 1-1/4" (exact match required)
Mounting Type: Requires Holder (exact match required)

All substitute parts listed meet these criteria. Variations in breaking capacity, melting I²t, DC cold resistance, and approval agencies do not disqualify substitution but are documented for engineering reference. The primary distinction between substitute groups is product status (active vs. obsolete) and manufacturing series designation.

Parameter Comparison

Part Number	Manufacturer	Series	Product Status	Current Rating	Voltage AC	Voltage DC	Response Time	Package / Case	Operating Temp	Breaking Capacity @ Rated Voltage	Melting I²t	DC Cold Resistance
0322010.MXP	Littelfuse Inc.	322	Obsolete	10 A	250 V	125 V	Fast Blow	3AB, 3AG, 1/4" x 1-1/4"	-55°C ~ 125°C	100 A	24	0.0073 Ω
0314010.HXP	Littelfuse Inc.	314	Active	10 A	250 V	125 V	Fast Blow	3AB, 3AG, 1/4" x 1-1/4"	-55°C ~ 125°C	750 A AC, 10 kA DC	206	0.0105 Ω
0314010.MXANP	Littelfuse Inc.	314	Active	10 A	250 V	125 V	Fast Blow	3AB, 3AG, 1/4" x 1-1/4"	-55°C ~ 125°C	750 A AC, 10 kA DC	206	0.0105 Ω
0314010.MXP	Littelfuse Inc.	314	Active	10 A	250 V	125 V	Fast Blow	3AB, 3AG, 1/4" x 1-1/4"	-55°C ~ 125°C	750 A AC, 10 kA DC	206	0.0105 Ω
0314010.VXP	Littelfuse Inc.	314	Active	10 A	250 V	125 V	Fast Blow	3AB, 3AG, 1/4" x 1-1/4"	-55°C ~ 125°C	750 A AC, 10 kA DC	206	0.0105 Ω
0332010.MXP	Littelfuse Inc.	332	Obsolete	10 A	250 V	125 V	Fast Blow	3AB, 3AG, 1/4" x 1-1/4"	-55°C ~ 125°C	100 A	24	0.0073 Ω
BK/GBB-10-R	Eaton - Electronics Division	GBB	Active	10 A	250 V	125 V	Fast Blow	3AB, 3AG, 1/4" x 1-1/4"	Not specified	10 kA	Not specified	0.00934 Ω

Engineering Selection Recommendations

For applications currently using the obsolete 0322010.MXP, the following selection criteria apply:

Primary Recommendation - Littelfuse Series 314 (Active Status): The 0314010.HXP, 0314010.MXANP, and 0314010.MXP are active production parts from Littelfuse Series 314. These parts maintain full electrical and mechanical compatibility with the original 0322010.MXP while offering enhanced breaking capacity (750 A AC, 10 kA DC vs. 100 A) and higher melting I²t values (206 vs. 24). All three variants carry expanded approval certifications including CE, CSA, K-MARK, PSE, and UL. The 0314010.MXP variant offers the highest inventory availability (5,887 units).

Alternative - Eaton BK/GBB-10-R (Active Status): The Eaton BK/GBB-10-R provides cross-manufacturer equivalence with identical electrical ratings and mechanical form factor. This part is active and carries CSA and UR certifications. Selection of this alternative is appropriate when Eaton component standardization is required or when supply chain diversification is a design objective.

Obsolete Alternative - Littelfuse 0332010.MXP: The 0332010.MXP (Series 332) is also obsolete and shares identical electrical and mechanical specifications with the original 0322010.MXP. This part should not be selected for new designs or long-term procurement strategies.

Frequently Asked Questions (FAQ)

Q: Can the 0314010.MXP directly replace the 0322010.MXP in existing applications?

A: Yes. Both parts are mechanically and electrically identical across all critical parameters: 10 A current rating, 250 V AC / 125 V DC voltage ratings, fast-blow response, ceramic cartridge construction, and 3AB/3AG holder compatibility. The 0314010.MXP is the recommended replacement due to active production status and enhanced breaking capacity specifications.

Q: What is the difference between the Littelfuse Series 314 variants (0314010.HXP, 0314010.MXANP, 0314010.MXP, 0314010.VXP)?

A: All four variants are electrically and mechanically identical. Differences are limited to packaging designation and approval agency certifications. The 0314010.MXP is recommended for highest availability. Selection among variants should be based on specific approval requirements for the target application.

Q: Are there performance differences between the original 0322010.MXP and the Series 314 substitutes?

A: The Series 314 substitutes provide superior breaking capacity (750 A AC, 10 kA DC vs. 100 A) and higher melting I²t values (206 vs. 24). These enhancements represent improved fault protection characteristics and do not affect normal operation in applications designed for the original part.

Q: Can the Eaton BK/GBB-10-R be used interchangeably with Littelfuse parts?

A: Yes. The Eaton BK/GBB-10-R meets all electrical and mechanical compatibility requirements. Selection between Littelfuse and Eaton alternatives should be based on approval certifications required by the application and supply chain preferences.

Q: What holder types are compatible with these fuses?

A: All listed parts require a 3AB or 3AG format holder with 1/4" x 1-1/4" (6.35mm x 31.75mm) dimensions. Verify holder compatibility before installation.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts carry ROHS3 compliance certification.

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