Littelfuse 0312025.H Glass Cartridge Fuse 25A 32VAC Equivalent & Substitute Parts

Part Overview

The Littelfuse 0312025.H is a 25 A, 32 V AC/DC glass cartridge fuse with fast-blow response characteristics, designed for 3AB and 3AG holder compatibility. This part operates across a temperature range of -55°C to 125°C and features a compact 1/4" × 1-1/4" form factor. The product is currently classified as obsolete, making identification of active equivalent and substitute parts essential for ongoing system maintenance and component procurement.

Substiute Parts

0312025.H

Littelfuse Inc.In Stock: 10700312025.H Datasheet

Current PartRFQ

0312025.HXP

Littelfuse Inc.In Stock: 11200312025.HXP Datasheet

DirectRFQ

0312025.MXP

Littelfuse Inc.In Stock: 31740312025.MXP Datasheet

Parametric EquivalentRFQ

0312025.VXP

Littelfuse Inc.In Stock: 9320312025.VXP Datasheet

Parametric EquivalentRFQ

AGC-25-R

Eaton - Electronics DivisionIn Stock: 801AGC-25-R Datasheet

Parametric EquivalentRFQ

BK/AGC-25-R

Eaton - Electronics DivisionIn Stock: 1855BK/AGC-25-R Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 0312025.H is determined by strict equivalence across the following parameters:

• Current Rating: 25 A (exact match required)
• Voltage Rating (AC): 32 V (exact match required)
• Fuse Type: Cartridge, Glass (exact match required)
• Response Time: Fast Blow (exact match required)
• Package / Case: 3AB, 3AG, 1/4" × 1-1/4" (exact match required)
• Mounting Type: Requires Holder (exact match required)
• Operating Temperature Range: -55°C to 125°C (exact match required)

All substitute parts listed below meet these criteria. Littelfuse 0312025.HXP, 0312025.MXP, and 0312025.VXP are direct manufacturer equivalents from the same series. Eaton AGC-25-R and BK/AGC-25-R are parametric equivalents from an alternative manufacturer, offering identical electrical and mechanical specifications within the defined parameters.

Parameter Comparison

Engineering Selection Recommendations

For applications currently using the obsolete 0312025.H, the Littelfuse 0312025.HXP, 0312025.MXP, and 0312025.VXP represent the primary substitution path. All three are active products from the original manufacturer and maintain identical electrical and mechanical specifications. The 0312025.HXP and 0312025.MXP carry ROHS3 compliance with REACH unaffected status, while 0312025.VXP maintains UL and CSA approvals consistent with the original part.

The Eaton AGC-25-R and BK/AGC-25-R are parametric equivalents suitable for applications where cross-manufacturer substitution is acceptable. Both parts meet all specified electrical and mechanical requirements and carry active product status. The BK/AGC-25-R variant includes ROHS3 compliance and REACH unaffected designation.

Selection between Littelfuse and Eaton alternatives should be based on existing supply chain relationships, inventory availability, and any system-level requirements for manufacturer consistency.

Frequently Asked Questions (FAQ)

Q: Can 0312025.HXP, 0312025.MXP, and 0312025.VXP be used interchangeably with 0312025.H?

A: Yes. All three parts are direct Littelfuse equivalents with identical current rating (25 A), voltage rating (32 V AC), response time (fast blow), package configuration (3AB, 3AG, 1/4" × 1-1/4"), and operating temperature range (-55°C to 125°C). The primary difference is product status; the original part is obsolete while the three alternatives are active.

Q: What is the difference between Littelfuse and Eaton fuses in this comparison?

A: Littelfuse 0312025.HXP, 0312025.MXP, and 0312025.VXP are manufacturer equivalents from the original supplier. Eaton AGC-25-R and BK/AGC-25-R are parametric equivalents from an alternative manufacturer. All five parts meet the same electrical and mechanical specifications for 25 A, 32 V AC/DC fast-blow cartridge fuses in 3AB/3AG holders. DC cold resistance differs slightly (0.0024 Ohms for Littelfuse versus 0.0027 Ohms for Eaton), but both values fall within acceptable operating parameters.

Q: Are there any compliance differences between these substitute parts?

A: The 0312025.H carries CSA and UL approvals. Littelfuse 0312025.HXP and 0312025.MXP carry CSA and cULus approvals with ROHS3 compliance. Littelfuse 0312025.VXP carries CSA and UL approvals with ROHS3 compliance. Eaton AGC-25-R and BK/AGC-25-R carry CSA and UL approvals, with BK/AGC-25-R including ROHS3 compliance. All parts are suitable for applications requiring CSA and UL certification.

Q: Can these fuses be used in any 3AB or 3AG holder?

A: Yes. All substitute parts are designed for 3AB and 3AG holder compatibility with the specified 1/4" × 1-1/4" form factor. Physical and electrical compatibility is maintained across all listed alternatives.

Q: What should I consider when selecting between multiple substitute options?

A: Selection criteria include product availability, supply chain preferences, compliance requirements specific to your application, and any system-level specifications requiring manufacturer consistency. All listed parts are functionally equivalent for the defined electrical and mechanical parameters.