Littelfuse 0314007.MXP Ceramic Fuse 7A 250VAC 125VDC 3AB Equivalent & Substitute Parts

Part Overview

The Littelfuse 0314007.MXP is a 7 A ceramic cartridge fuse rated for 250 V AC and 125 V DC operation. This fast-blow fuse is designed for use in 3AB, 3AG holder configurations with dimensions of 1/4" x 1-1/4" (6.35mm x 31.75mm). The part is currently active in production with full inventory availability. Equivalent and substitute parts are identified based on matching electrical ratings, mechanical compatibility, and regulatory certifications to support component sourcing flexibility and supply chain continuity.

Substiute Parts

0314007.MXP

Littelfuse Inc.In Stock: 20310314007.MXP Datasheet

Current PartRFQ

0314007.HXP

Littelfuse Inc.In Stock: 11090314007.HXP Datasheet

DirectRFQ

0314007.VXP

Littelfuse Inc.In Stock: 9540314007.VXP Datasheet

Parametric EquivalentRFQ

3AB 7-R

Bel Fuse Inc.In Stock: 14763AB 7-R Datasheet

MFR RecommendedRFQ

BK/ABC-7-R

Eaton - Electronics DivisionIn Stock: 1331BK/ABC-7-R Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 0314007.MXP is determined by the following critical parameters:

• Current Rating: 7 A (exact match required)
• Voltage Rating - AC: 250 V (exact match required)
• Voltage Rating - DC: 125 V (exact match required for DC applications)
• 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 for mechanical compatibility)
• Mounting Type: Requires Holder (exact match required)

All identified substitute parts meet these criteria. Variations in breaking capacity, melting I²t, DC cold resistance, and approval agency certifications do not preclude substitution when the above parameters are identical.

Parameter Comparison

Engineering Selection Recommendations

All identified substitute parts are active products with current manufacturing status and full regulatory compliance. Selection among equivalent parts should be based on the following factors:

Littelfuse 0314007.HXP and 0314007.VXP are direct Littelfuse alternatives with identical electrical specifications and breaking capacity ratings. These parts maintain the same melting I²t value (71) and DC cold resistance (0.0187 Ohms) as the primary part. Both carry comprehensive approval certifications including CE, CSA, PSE, and UL. The 0314007.VXP carries KC certification in place of K-MARK.

Bel Fuse 3AB 7-R is a manufacturer-recommended alternative with matching current, AC voltage, and mechanical specifications. This part operates within the same temperature range and carries CE, CSA, cULus, and PSE certifications. The breaking capacity is rated at 200A AC, which is lower than the Littelfuse options. DC voltage rating is not specified for this part.

Eaton BK/ABC-7-R is a manufacturer-recommended alternative with matching current, AC voltage, DC voltage, and mechanical specifications. This part carries CSA and UL certifications. The breaking capacity is rated at 200A AC and 10kA DC. Operating temperature range is not specified.

For applications requiring the full 750A AC breaking capacity and 10kA DC breaking capacity, Littelfuse 0314007.HXP or 0314007.VXP are preferred. For applications with lower fault current requirements, Bel Fuse 3AB 7-R or Eaton BK/ABC-7-R provide compliant alternatives.

Frequently Asked Questions (FAQ)

Q: Can 0314007.HXP be used as a direct replacement for 0314007.MXP?

A: Yes. Both parts are manufactured by Littelfuse and share identical electrical ratings (7 A, 250 V AC, 125 V DC), fuse type (ceramic cartridge), response time (fast blow), package configuration (3AB, 3AG, 1/4" x 1-1/4"), and breaking capacity specifications (750A AC, 10kA DC). Both are ROHS3 compliant and carry the same regulatory certifications.

Q: What is the difference between 0314007.VXP and 0314007.MXP?

A: The parts are electrically and mechanically identical. The primary difference is in regulatory certifications: 0314007.VXP carries KC certification instead of K-MARK. Both maintain identical melting I²t (71) and DC cold resistance (0.0187 Ohms).

Q: Can Bel Fuse 3AB 7-R replace the Littelfuse part in all applications?

A: The Bel Fuse 3AB 7-R matches the critical electrical and mechanical parameters (7 A, 250 V AC, ceramic cartridge, fast blow, 3AB/3AG package). However, the DC voltage rating is not specified for this part, and the breaking capacity is limited to 200A AC compared to 750A AC for the Littelfuse part. Applications requiring 125 V DC operation or higher fault current capacity should use Littelfuse or Eaton alternatives.

Q: Is the Eaton BK/ABC-7-R suitable for 125 V DC circuits?

A: Yes. The Eaton BK/ABC-7-R is rated for 125 V DC operation and matches the current (7 A), AC voltage (250 V), fuse type (ceramic cartridge), response time (fast blow), and package configuration (3AB, 3AG, 1/4" x 1-1/4") of the primary part. The part carries CSA and UL certifications.

Q: Do all substitute parts fit the same holder?

A: Yes. All substitute parts use the 3AB, 3AG package configuration with dimensions of 1/4" Dia x 1-1/4" L (6.35mm x 31.75mm) and require the same holder type. Mechanical compatibility is assured across all listed alternatives.

Q: What does "Fast Blow" response time mean?

A: Fast Blow indicates that the fuse will open quickly when current exceeds the rated value. All listed parts share this response characteristic, ensuring consistent circuit protection behavior across substitutions.