Littelfuse 0312005.VXP Glass Cartridge Fuse - Equivalent & Substitute Parts

Part Overview

The Littelfuse 0312005.VXP is a 5 A, 250 V AC/DC glass cartridge fuse with fast-blow response characteristics, designed for 3AB and 3AG holder applications. This component is part of the 312 series and maintains active product status. Equivalent and substitute parts are identified based on matching electrical ratings, mechanical dimensions, and holder compatibility to ensure direct interchangeability in circuit protection applications.

Substiute Parts

0312005.VXP

Littelfuse Inc.In Stock: 8760312005.VXP Datasheet

Current PartRFQ

0312005.HXP

Littelfuse Inc.In Stock: 39270312005.HXP Datasheet

Parametric EquivalentRFQ

0312005.MXP

Littelfuse Inc.In Stock: 87340312005.MXP Datasheet

Parametric EquivalentRFQ

BK/AGC-5-R

Eaton - Electronics DivisionIn Stock: 1087BK/AGC-5-R Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 0312005.VXP are identified based on the following critical parameters that determine interchangeability:

• Current Rating: 5 A (exact match required)
• Voltage Rating: 250 V AC (exact match required)
• Fuse Type: Cartridge, Glass (exact match required)
• Response Time: Fast Blow (exact match required)
• Package / Case: 3AB, 3AG, 1/4" x 1-1/4" (exact match required)
• Breaking Capacity: 200 A (exact match required)
• Operating Temperature Range: -55°C ~ 125°C (exact match required)

All substitute parts listed maintain these specifications, ensuring mechanical and electrical compatibility with the original part's holder and circuit requirements.

Parameter Comparison

Engineering Selection Recommendations

All listed substitute parts maintain active product status and meet the core electrical and mechanical specifications of the 0312005.VXP. Selection among these parts should be based on:

• Approval agency requirements for the target application (0312005.VXP, 0312005.HXP, and 0312005.MXP carry CE, CSA, KC, PSE, and UL certifications; BK/AGC-5-R carries CSA and UL certifications)
• Inventory availability and lead time considerations
• DC cold resistance tolerance requirements (Littelfuse variants: 0.0224 Ohms; Eaton variant: 0.019 Ohms)
• Melting I²t characteristics (Littelfuse variants: 50; Eaton variant: 131.5)

All parts are ROHS3 compliant and REACH unaffected, meeting environmental regulatory requirements.

Frequently Asked Questions (FAQ)

Q: Can 0312005.HXP and 0312005.MXP be used interchangeably with 0312005.VXP?

A: Yes. All three Littelfuse parts share identical electrical ratings (5 A, 250 V AC), response characteristics (fast blow), mechanical dimensions (1/4" x 1-1/4"), and holder compatibility (3AB, 3AG). They are parametric equivalents.

Q: Is the Eaton BK/AGC-5-R a direct substitute for the Littelfuse 0312005.VXP?

A: The BK/AGC-5-R matches all critical electrical and mechanical parameters. However, it carries fewer approval certifications (CSA, UL versus CE, CSA, KC, PSE, UL). Verify that the reduced certification set meets application requirements before substitution.

Q: What is the significance of the different DC cold resistance values?

A: The Littelfuse variants (0.0224 Ohms) and Eaton variant (0.019 Ohms) have different DC cold resistance specifications. This difference may affect circuit behavior in low-resistance applications. Confirm compatibility with circuit design parameters before substitution.

Q: Do all substitute parts require the same holder type?

A: Yes. All parts are designed for 3AB and 3AG holders with 1/4" x 1-1/4" dimensions. No holder modification is required when substituting between these parts.

Q: Are there differences in melting I²t values among the substitutes?

A: Yes. Littelfuse parts (0312005.VXP, 0312005.HXP, 0312005.MXP) have a melting I²t of 50, while the Eaton BK/AGC-5-R has a melting I²t of 131.5. This affects thermal response characteristics. Verify that the substitute's I²t value is acceptable for the target circuit protection application.