BK/AGC-6 Glass Cartridge Fuse Equivalent & Substitute Parts

Part Overview

The BK/AGC-6 is a 6 A, 250 V AC/DC fast-blow glass cartridge fuse manufactured by Eaton Electronics Division. This fuse is designed for 3AB and 3AG holder compatibility with dimensions of 0.250" diameter by 1.250" length (6.35mm x 31.75mm). The main part number BK/AGC-6 carries an obsolete product status, making identification of active equivalent and substitute parts essential for procurement and circuit protection applications requiring continuous supply availability.

Substiute Parts

BK/AGC-6

Eaton - Electronics DivisionIn Stock: 1012BK/AGC-6 Datasheet

Current PartRFQ

AGC-6-R

Eaton - Electronics DivisionIn Stock: 743AGC-6-R Datasheet

DirectRFQ

BK/AGC-6-R

Eaton - Electronics DivisionIn Stock: 8676BK/AGC-6-R Datasheet

DirectRFQ

0034.5140

SCHURTER Inc.In Stock: 8190034.5140 Datasheet

SimilarRFQ

0312006.MXP

Littelfuse Inc.In Stock: 42330312006.MXP Datasheet

SimilarRFQ

0312006.HXP

Littelfuse Inc.In Stock: 31200312006.HXP Datasheet

Parametric EquivalentRFQ

0312006.VXP

Littelfuse Inc.In Stock: 12740312006.VXP Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the BK/AGC-6 is determined by strict equivalence across the following parameters:

Critical Substitution Parameters:

• Current Rating: 6 A (exact match required)
• Voltage Rating: 250 V AC (exact match required)
• Response Time: Fast Blow (exact match required)
• Package / Case: 3AB, 3AG, 1/4" x 1-1/4" (exact match required)
• Fuse Type: Cartridge, Glass (exact match required)
• Breaking Capacity: 200 A (exact match required)
• Operating Temperature: -55°C ~ 125°C (exact match required)

Substitute Categories:

Direct Manufacturer Equivalents (Eaton Electronics Division):

• BK/AGC-6-R: Active product status replacement with identical electrical and mechanical specifications
• AGC-6-R: Active product status variant with identical electrical and mechanical specifications

Similar Manufacturer Parts (Cross-Manufacturer Substitutes):

• 0312006.VXP (Littelfuse Inc., Series 312): Parametric equivalent with active product status
• 0312006.MXP (Littelfuse Inc., Series 312): Similar manufacturer part with active product status
• 0312006.HXP (Littelfuse Inc., Series 312): Parametric equivalent with active product status
• 0034.5140 (SCHURTER Inc., Series FST 6.3x32): Similar manufacturer part with obsolete product status

All substitute parts maintain identical current rating, voltage rating, response time, package compatibility, and breaking capacity specifications.

Parameter Comparison

Engineering Selection Recommendations

Primary Selection (Recommended for New Designs and Replacements):

BK/AGC-6-R or AGC-6-R from Eaton Electronics Division are the preferred direct manufacturer equivalents. Both parts maintain active product status and provide continuity with the original BK/AGC-6 design. BK/AGC-6-R carries ROHS3 compliance certification, meeting current regulatory requirements for electronic components. Both parts are manufactured by the original equipment supplier and carry CSA and UL approval certifications identical to the main part.

Secondary Selection (Cross-Manufacturer Alternatives):

The Littelfuse Inc. series 312 fuses (0312006.VXP, 0312006.MXP, 0312006.HXP) provide parametric equivalence with active product status and ROHS3 compliance. These parts carry expanded approval certifications including CE, CSA, KC, PSE, and UL. Selection of Littelfuse alternatives is appropriate when supply constraints exist for Eaton products or when expanded international certifications are required.

Obsolete Part Consideration:

The SCHURTER Inc. part 0034.5140 carries obsolete product status. While parametric specifications match the BK/AGC-6, procurement of this part is not recommended for new applications due to limited availability and discontinued manufacturing status.

Compliance Considerations:

The original BK/AGC-6 carries RoHS non-compliant status. All recommended substitute parts (BK/AGC-6-R, AGC-6-R, and Littelfuse series 312 variants) carry ROHS3 compliance certification, ensuring compatibility with current regulatory frameworks and procurement standards.

Frequently Asked Questions (FAQ)

Q: Can BK/AGC-6-R be used as a direct replacement for BK/AGC-6?

A: Yes. BK/AGC-6-R is a direct manufacturer equivalent with identical electrical and mechanical specifications. The primary difference is product status (active versus obsolete) and RoHS compliance certification. All electrical parameters, current rating, voltage rating, response time, package compatibility, and breaking capacity are identical.

Q: Are Littelfuse 312 series fuses (0312006.VXP, 0312006.MXP, 0312006.HXP) compatible with 3AB and 3AG holders?

A: Yes. All Littelfuse 312 series fuses specified carry 3AB and 3AG package designation with identical 0.250" diameter by 1.250" length dimensions. These parts are mechanically and electrically compatible with holders designed for the BK/AGC-6.

Q: What is the difference between 0312006.VXP, 0312006.MXP, and 0312006.HXP?

A: All three Littelfuse parts carry identical electrical specifications: 6 A current rating, 250 V AC voltage rating, fast-blow response time, 200 A breaking capacity, and -55°C to 125°C operating temperature range. The part number suffix designates internal manufacturing variants or packaging configurations. Electrical performance and holder compatibility are equivalent across all three variants.

Q: Is the SCHURTER 0034.5140 fuse recommended for new applications?

A: No. While the SCHURTER 0034.5140 carries parametric equivalence to the BK/AGC-6, it holds obsolete product status. Eaton BK/AGC-6-R or Littelfuse 312 series alternatives are recommended for new designs and replacements to ensure long-term supply availability.

Q: What certifications apply to substitute parts?

A: BK/AGC-6-R and AGC-6-R carry CSA and UL certifications. Littelfuse 312 series fuses (0312006.VXP, 0312006.MXP, 0312006.HXP) carry expanded certifications: CE, CSA, KC, PSE, and UL. All substitute parts meet or exceed the approval agency requirements of the original BK/AGC-6.

Q: Are there differences in DC cold resistance between substitute parts?

A: Minor variations exist. BK/AGC-6 and BK/AGC-6-R specify 0.015 Ohms DC cold resistance. Littelfuse 312 series parts specify 0.0178 Ohms. These variations fall within acceptable tolerance ranges for fuse applications and do not affect circuit protection performance or holder compatibility.

Q: Can substitute parts be mixed in the same circuit or equipment?

A: Yes. All substitute parts maintain identical electrical specifications for current rating, voltage rating, response time, and breaking capacity. Mechanical compatibility with 3AB and 3AG holders is identical across all parts. Mixed usage of substitute parts within the same equipment is electrically and mechanically sound.