Littelfuse 0314008.MXP Ceramic Fuse Cartridge - Equivalent & Substitute Parts

Part Overview

The Littelfuse 0314008.MXP is an 8 A ceramic fuse cartridge rated for 250 V AC and 125 V DC operation. This fast-blow cartridge fuse requires a compatible holder (3AB, 3AG format) and is designed for circuit protection in industrial and commercial applications. The part maintains active product status with full regulatory compliance across multiple certification bodies. Substitute parts are identified when equivalent electrical and mechanical parameters align with the original specification, ensuring direct interchangeability within the same circuit protection application.

Substiute Parts

0314008.MXP

Littelfuse Inc.In Stock: 12440314008.MXP Datasheet

Current PartRFQ

0314008.HXP

Littelfuse Inc.In Stock: 20640314008.HXP Datasheet

DirectRFQ

3AB 8-R

Bel Fuse Inc.In Stock: 16773AB 8-R Datasheet

MFR RecommendedRFQ

BK/ABC-8-R

Eaton - Electronics DivisionIn Stock: 1649BK/ABC-8-R Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 0314008.MXP is determined by strict alignment of the following parameters:

• Current Rating: 8 A (exact match required)
• Voltage Rating - AC: 250 V (exact match required)
• Voltage Rating - DC: 125 V (exact match required)
• 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)
• Mounting Type: Requires Holder (exact match required)

All identified substitute parts meet these criteria. Mechanical dimensions (0.250" Dia x 1.250" L) and thermal operating range (-55°C ~ 125°C) are consistent across all alternatives. Regulatory compliance certifications and RoHS3 compliance status are verified for each substitute.

Parameter Comparison

Engineering Selection Recommendations

All four parts listed maintain active product status and ROHS3 compliance. Selection among these alternatives should be based on regulatory certification requirements for the target application:

The Littelfuse 0314008.MXP and 0314008.HXP are functionally identical with identical electrical specifications and certifications (CE, CSA, K-MARK, PSE, UL). The 0314008.HXP variant offers higher inventory availability (2000 pcs vs. 1151 pcs).

The Bel Fuse 3AB 8-R meets AC voltage and current specifications with CE, CSA, cURus, and PSE certifications. DC voltage rating is not specified in the datasheet. Breaking capacity is rated at 200A AC, lower than the Littelfuse variants.

The Eaton BK/ABC-8-R meets all electrical specifications (8 A, 250 V AC, 125 V DC) with CSA and UL certifications. Operating temperature range is not specified. Breaking capacity is rated at 200A AC and 10kA DC.

For applications requiring K-MARK or PSE certification, the Littelfuse variants are the appropriate selection. For applications requiring only CSA and UL certifications, the Eaton BK/ABC-8-R is suitable. The Bel Fuse 3AB 8-R is suitable for AC-only applications where DC voltage rating specification is not critical.

Frequently Asked Questions (FAQ)

Q: Can the 0314008.HXP directly replace the 0314008.MXP?

A: Yes. Both parts are manufactured by Littelfuse with identical electrical ratings (8 A, 250 V AC, 125 V DC), response time (Fast Blow), package format (3AB, 3AG, 1/4" x 1-1/4"), and regulatory certifications. They are mechanically and electrically interchangeable.

Q: What is the difference between the Littelfuse and Bel Fuse variants?

A: The Littelfuse 0314008.MXP and 0314008.HXP are rated for 125 V DC operation with breaking capacity of 750A AC and 10kA DC. The Bel Fuse 3AB 8-R does not specify a DC voltage rating and has a breaking capacity of 200A AC. Both share identical AC voltage (250 V) and current (8 A) ratings. Certification differences exist: Littelfuse includes K-MARK and PSE; Bel Fuse includes cURus.

Q: Can the Eaton BK/ABC-8-R be used in place of the Littelfuse 0314008.MXP?

A: The Eaton BK/ABC-8-R meets the core electrical specifications (8 A, 250 V AC, 125 V DC) and package requirements (3AB, 3AG, 1/4" x 1-1/4"). However, it carries only CSA and UL certifications, whereas the Littelfuse variant includes CE, CSA, K-MARK, PSE, and UL. Substitution is appropriate only when CSA and UL certifications satisfy application requirements.

Q: Are all these fuses compatible with the same holder?

A: Yes. All four parts use the 3AB, 3AG package format with 1/4" x 1-1/4" dimensions and require the same holder type. Mechanical interchangeability is confirmed across all alternatives.

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

A: Fast Blow indicates the fuse operates with a short time delay before melting under overcurrent conditions. All substitute parts share this characteristic, ensuring consistent circuit protection response timing.

Q: Why do the Melting I²t values differ among the parts?

A: Melting I²t is a thermal characteristic that reflects the fuse element's heat capacity and melting behavior. The Littelfuse variants (105) and Eaton (116.5) are closely aligned, while the Bel Fuse (184) is higher. This difference may affect nuisance trip behavior in circuits with high inrush currents; however, all parts meet the 8 A current rating specification.

Q: Which part should I select if I need maximum regulatory coverage?

A: The Littelfuse 0314008.MXP or 0314008.HXP provide the broadest certification coverage (CE, CSA, K-MARK, PSE, UL). Select these variants when applications require compliance across multiple international standards.