ATC-3 Automotive Fuse Equivalent & Substitute Parts

Part Overview

The ATC-3 is a 3A automotive blade fuse rated for 32V DC operation, manufactured by Eaton - Bussmann Electrical Division. This fast-blow fuse is designed for automotive electrical circuit protection and requires a compatible blade fuse holder (ATO/ATC type). The part maintains active product status with 771 units in current inventory. Equivalent substitute parts are identified to support procurement flexibility, supply chain continuity, and component availability across manufacturing and repair operations.

Substiute Parts

ATC-3

Eaton - Bussmann Electrical DivisionIn Stock: 820ATC-3 Datasheet

Current PartRFQ

BK/ATC-3

Eaton - Bussmann Electrical DivisionIn Stock: 2361BK/ATC-3 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ATC-3 is determined by strict equivalence across the following critical parameters:

• Current Rating: 3 A (exact match required)
• Voltage Rating - DC: 32 V (exact match required)
• Package / Case: Blade, ATO/ATC (exact match required)
• Fuse Type: Automotive (exact match required)
• Response Time: Fast Blow (exact match required)
• Breaking Capacity @ Rated Voltage: 1 kA (exact match required)
• Mounting Type: Requires Holder (exact match required)
• Approval Agency: UL (exact match required)

The substitute part BK/ATC-3 meets all critical electrical and mechanical parameters, ensuring direct functional equivalence and interchangeability within automotive electrical circuits designed for the ATC-3 specification.

Parameter Comparison

Engineering Selection Recommendations

Both ATC-3 and BK/ATC-3 are active products manufactured by Eaton - Bussmann Electrical Division with identical electrical and mechanical specifications. Selection between these parts is based on availability and compliance requirements:

• ATC-3: 771 units in current inventory; RoHS Compliant
• BK/ATC-3: 2280 units in current inventory; ROHS3 Compliant; REACH Unaffected designation

Both parts carry UL approval and meet the same breaking capacity and dimensional requirements. The BK/ATC-3 variant offers higher inventory availability and enhanced RoHS3 compliance status, making it suitable for applications with extended supply chain requirements or stricter environmental compliance mandates.

Frequently Asked Questions (FAQ)

Q: Can BK/ATC-3 be used as a direct replacement for ATC-3?

A: Yes. Both parts are electrically and mechanically identical across all critical parameters: 3A current rating, 32V DC voltage rating, fast-blow response, ATO/ATC blade package, 1kA breaking capacity, and UL approval. They are fully interchangeable in automotive electrical circuits.

Q: What is the difference between RoHS Compliant and ROHS3 Compliant?

A: ROHS3 Compliant represents an updated compliance designation reflecting current RoHS Directive requirements. Both designations confirm the absence of restricted substances. The BK/ATC-3 carries the more current ROHS3 designation.

Q: Are both parts compatible with the same fuse holder?

A: Yes. Both ATC-3 and BK/ATC-3 use the Blade, ATO/ATC package type and require the same ATO/ATC compatible fuse holder. Physical dimensions are identical: 0.760" L x 0.207" W x 0.492" H.

Q: Which part should be selected for new designs?

A: Selection is based on procurement and compliance requirements. Both parts are active products. BK/ATC-3 offers higher inventory availability (2280 units vs. 771 units) and ROHS3 compliance status.

Q: Do these fuses require any special installation considerations?

A: Both fuses require a compatible ATO/ATC blade fuse holder for installation. No additional installation requirements exist beyond standard automotive fuse holder compatibility.