BK/AGC-25 Equivalent & Substitute Parts

Part Overview

The BK/AGC-25 is a 25 A 32 V AC DC fast-blow glass cartridge fuse manufactured by Eaton - Electronics Division. This fuse is designed for use in 3AB and 3AG holders with dimensions of 1/4" x 1-1/4" (6.35mm x 31.75mm). The part is currently classified as obsolete, which necessitates identification of active equivalent and substitute components that maintain electrical and mechanical compatibility for continued circuit protection applications.

Substiute Parts

BK/AGC-25

Eaton - Electronics DivisionIn Stock: 841BK/AGC-25 Datasheet

Current PartRFQ

AGC-25-R

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

DirectRFQ

BK/AGC-25-R

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

DirectRFQ

0312025.HXP

Littelfuse Inc.In Stock: 11200312025.HXP Datasheet

SimilarRFQ

0312025.MXP

Littelfuse Inc.In Stock: 31740312025.MXP Datasheet

SimilarRFQ

0312025.VXP

Littelfuse Inc.In Stock: 9320312025.VXP Datasheet

SimilarRFQ

0311025.H

Littelfuse Inc.In Stock: 9240311025.H Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the BK/AGC-25 is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Current Rating: 25 A
• Voltage Rating (AC): 32 V
• Fuse Type: Cartridge, Glass
• Response Time: Fast Blow
• Package / Case: 3AB, 3AG, 1/4" x 1-1/4"
• Size / Dimension: 0.250" Dia x 1.250" L (6.35mm x 31.75mm)
• Mounting Type: Requires Holder
• Operating Temperature Range: -55°C ~ 125°C

All substitute parts listed below meet these mandatory parameters. Variations in breaking capacity, melting I²t, DC cold resistance, and RoHS compliance status do not affect functional substitutability within the specified electrical and mechanical constraints.

Parameter Comparison

Engineering Selection Recommendations

Primary Recommendation - Direct Eaton Replacement: AGC-25-R and BK/AGC-25-R are active-status direct replacements from Eaton - Electronics Division. Both parts maintain identical electrical specifications and mechanical form factor to the obsolete BK/AGC-25. BK/AGC-25-R offers higher inventory availability (1790 pcs) and ROHS3 compliance with REACH unaffected status.

Secondary Recommendation - Cross-Manufacturer Alternatives: Littelfuse Inc. 0312025.HXP, 0312025.MXP, and 0312025.VXP are functionally equivalent alternatives. All three maintain the required 25 A, 32 V AC DC specifications with identical package dimensions and fast-blow response characteristics. These parts carry active product status and ROHS3 compliance. The 0312025.MXP variant offers the highest inventory level (3123 pcs).

Parametric Equivalent: 0311025.H from Littelfuse Inc. is classified as a parametric equivalent within the AGC series. This part meets all mandatory electrical and mechanical parameters with active product status and ROHS3 compliance.

Compliance Considerations: All substitute parts listed carry CSA and UL or cULus approvals, maintaining regulatory compliance for circuit protection applications. RoHS compliance status varies; ROHS3-compliant variants are available for applications requiring enhanced environmental compliance.

Frequently Asked Questions (FAQ)

Q: Can AGC-25-R be used as a direct replacement for BK/AGC-25? A: Yes. AGC-25-R is an active-status equivalent from the same manufacturer (Eaton - Electronics Division) with identical current rating (25 A), voltage rating (32 V AC), response time (fast blow), and package dimensions (1/4" x 1-1/4"). Both require 3AB or 3AG holders.

Q: What is the difference between BK/AGC-25-R and AGC-25-R? A: Both are active Eaton products with identical electrical and mechanical specifications. BK/AGC-25-R carries ROHS3 compliance and REACH unaffected status, while AGC-25-R carries RoHS compliance. BK/AGC-25-R has higher inventory availability.

Q: Are Littelfuse 0312025 series fuses compatible with 3AB and 3AG holders? A: Yes. The 0312025.HXP, 0312025.MXP, and 0312025.VXP variants all feature identical package dimensions (1/4" x 1-1/4") and are designed for 3AB and 3AG holder compatibility.

Q: What is the difference between 0312025.HXP, 0312025.MXP, and 0312025.VXP? A: All three variants maintain identical electrical specifications (25 A, 32 V AC, fast blow) and mechanical form factor. Differences exist in breaking capacity and melting I²t characteristics, but these do not affect substitutability within the specified parameter constraints. 0312025.MXP offers the highest inventory availability.

Q: Can 0311025.H be used as a substitute for BK/AGC-25? A: Yes. 0311025.H is a parametric equivalent from Littelfuse Inc. with matching current rating (25 A), voltage rating (32 V AC), response time (fast blow), and package dimensions (1/4" x 1-1/4"). It requires 3AB or 3AG holders and operates within the same temperature range (-55°C ~ 125°C).

Q: Are all substitute parts RoHS compliant? A: All listed substitute parts carry ROHS3 compliance status. The original BK/AGC-25 is RoHS non-compliant. For applications requiring RoHS compliance, select from the active substitute options.

Q: What certifications do these fuses carry? A: All substitute parts carry CSA and UL or cULus approvals. Littelfuse variants carry either CSA/cULus or CSA/UL certifications, maintaining regulatory compliance for circuit protection applications.