Littelfuse 0314020.H Ceramic Fuse 20A 250VAC 125VDC Equivalent & Substitute Parts

Part Overview

The Littelfuse 0314020.H is a 20 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 maintenance and new designs. The fuse is designed for fast-blow response and requires a compatible holder (3AB, 3AG format). Equivalent and substitute parts maintain the same electrical ratings and mechanical form factor while offering improved availability and compliance status.

Substiute Parts

0314020.H

Littelfuse Inc.In Stock: 61690314020.H Datasheet

Current PartRFQ

0314020.HXP

Littelfuse Inc.In Stock: 15940314020.HXP Datasheet

DirectRFQ

0314020.MXP

Littelfuse Inc.In Stock: 81230314020.MXP Datasheet

Parametric EquivalentRFQ

0314020.VXP

Littelfuse Inc.In Stock: 11170314020.VXP Datasheet

Parametric EquivalentRFQ

BP/ABC-20

Eaton - Bussmann Electrical DivisionIn Stock: 1093BP/ABC-20 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the Littelfuse 0314020.H is determined by strict equivalence across electrical and mechanical parameters. All substitute parts must maintain identical current rating (20 A), voltage ratings (250 V AC / 125 V DC), fuse type (ceramic cartridge), response time (fast blow), and physical dimensions (1/4" x 1-1/4"). The melting I²t value of 631 defines the thermal response characteristic and must be preserved for functional equivalence.

Littelfuse 0314020.HXP, 0314020.MXP, and 0314020.VXP are direct manufacturer equivalents within the same 314 series, differing only in packaging format (bulk) and compliance certifications. The Eaton BP/ABC-20 represents a cross-manufacturer substitute from a different series (ABC) that meets all electrical and mechanical requirements while offering alternative breaking capacity and compliance credentials.

Parameter Comparison

Engineering Selection Recommendations

For replacement of the obsolete Littelfuse 0314020.H, the Littelfuse 0314020.HXP, 0314020.MXP, and 0314020.VXP are preferred selections. These parts maintain identical electrical characteristics and mechanical form factor while offering active product status and improved compliance certifications (ROHS3 compliant, CE marked). All three Littelfuse alternatives carry expanded approval agency recognition including PSE and KC certifications.

The Eaton BP/ABC-20 serves as a cross-manufacturer alternative when Littelfuse equivalents are unavailable. This part meets all electrical and mechanical substitution criteria and carries RoHS compliance. The BP/ABC-20 exhibits a lower melting I²t value (550.8 versus 631) and reduced breaking capacity at AC ratings (400 A versus 1 kA or 200 A), which may affect performance in specific circuit protection applications.

Selection between Littelfuse 0314020.HXP, 0314020.MXP, and 0314020.VXP depends on inventory availability and regional compliance requirements. The 0314020.VXP offers the broadest certification coverage (CE, CSA, KC, PSE, UL) and matches the original breaking capacity specification (1 kA AC).

Frequently Asked Questions (FAQ)

Q: Can the Littelfuse 0314020.HXP directly replace the obsolete 0314020.H?

A: Yes. The 0314020.HXP maintains identical electrical ratings (20 A, 250 V AC, 125 V DC), fuse type (ceramic cartridge), response time (fast blow), and physical dimensions (1/4" x 1-1/4"). Both require the same holder format (3AB, 3AG). The primary difference is product status (active versus obsolete) and improved compliance certifications.

Q: What is the difference between 0314020.HXP, 0314020.MXP, and 0314020.VXP?

A: All three parts are functionally equivalent with identical electrical and mechanical specifications. Differences exist in breaking capacity at AC ratings (0314020.HXP and 0314020.MXP: 200 A; 0314020.VXP: 1 kA) and regional certification coverage. The 0314020.VXP includes KC certification for Korean markets. Selection should be based on application requirements and regional compliance needs.

Q: Is the Eaton BP/ABC-20 a suitable replacement?

A: The BP/ABC-20 meets core electrical and mechanical requirements (20 A, 250 V AC, 125 V DC, ceramic cartridge, fast blow, 1/4" x 1-1/4" dimensions). However, it exhibits a lower melting I²t (550.8 versus 631) and reduced AC breaking capacity (400 A versus 1 kA). Use this part only when Littelfuse equivalents are unavailable and application parameters permit the lower thermal response characteristic.

Q: Does holder compatibility require verification?

A: The 0314020.H and all substitute parts use the 3AB and 3AG holder format with 1/4" x 1-1/4" dimensions. Physical compatibility is assured across all listed substitutes. Verify that existing fuse holders in the application support this cartridge format.

Q: What compliance considerations apply to substitution?

A: The original 0314020.H is RoHS non-compliant. All active substitutes (0314020.HXP, 0314020.MXP, 0314020.VXP, BP/ABC-20) carry RoHS compliance certifications. For applications subject to RoHS requirements, any of these substitutes satisfies regulatory obligations. Regional certifications (CE, PSE, KC, UL, CSA) vary by part; select based on target market requirements.