ATC-4 Automotive Fuse - Equivalent & Substitute Parts

Part Overview

The ATC-4 is a 4A automotive blade fuse rated for 32V DC operation, manufactured by Eaton - Bussmann Electrical Division. This fast-blow fuse is designed for automotive electrical circuits requiring holder-based mounting in the ATO/ATC blade format. The part maintains active product status with UL approval and RoHS compliance. Substitute parts are identified when identical electrical and mechanical parameters are maintained across the same fuse category, enabling direct replacement in automotive protection circuits.

Substiute Parts

ATC-4

Eaton - Bussmann Electrical DivisionIn Stock: 1045ATC-4 Datasheet

Current PartRFQ

BK/ATC-4

Eaton - Bussmann Electrical DivisionIn Stock: 1980BK/ATC-4 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

The BK/ATC-4 is classified as a parametric equivalent to the ATC-4 based on the following critical substitution criteria:

• Current Rating: 4 A (identical)
• Voltage Rating - DC: 32 V (identical)
• Fuse Type: Automotive (identical)
• Response Time: Fast Blow (identical)
• Package / Case: Blade, ATO/ATC (identical)
• Breaking Capacity @ Rated Voltage: 1kA (identical)
• Mounting Type: Requires Holder (identical)
• Physical Dimensions: 0.760" L x 0.207" W x 0.492" H (identical)
• Approval Agency: UL (identical)
• Color: Pink (identical)

All electrical and mechanical parameters match exactly, confirming direct substitutability within automotive fuse applications.

Parameter Comparison

Engineering Selection Recommendations

Both the ATC-4 and BK/ATC-4 maintain active product status with identical electrical specifications and UL approval. The BK/ATC-4 carries ROHS3 compliance designation, representing an enhanced regulatory status compared to the standard RoHS Compliant rating of the ATC-4. Both parts are manufactured by Eaton - Bussmann Electrical Division and are suitable for direct substitution in automotive fuse applications requiring 4A, 32V DC protection with fast-blow response characteristics. Selection between these parts may be determined by inventory availability or specific compliance requirements of the end application.

Frequently Asked Questions (FAQ)

Q: Can the BK/ATC-4 replace the ATC-4 in automotive circuits?

A: Yes. Both parts share identical current rating (4A), voltage rating (32V DC), response time (fast-blow), package format (Blade, ATO/ATC), and physical dimensions. Direct substitution is supported.

Q: What does the "BK/" prefix in BK/ATC-4 indicate?

A: The BK/ prefix is part of the manufacturer's part numbering scheme. It does not alter the electrical or mechanical specifications of the fuse. Both ATC-4 and BK/ATC-4 are equivalent products from Eaton - Bussmann Electrical Division.

Q: Are there differences in compliance between ATC-4 and BK/ATC-4?

A: The BK/ATC-4 carries ROHS3 Compliant status, while the ATC-4 is RoHS Compliant. Both maintain UL approval and are suitable for automotive applications. The ROHS3 designation on the BK/ATC-4 represents current regulatory alignment.

Q: Do these fuses require a specific holder type?

A: Both the ATC-4 and BK/ATC-4 require a holder for installation. They are designed for the ATO/ATC blade fuse holder format, which is standard in automotive electrical systems.

Q: What is the physical size of these fuses?

A: Both fuses measure 0.760" L x 0.207" W x 0.492" H, equivalent to 19.30mm x 5.25mm x 12.50mm. This standardized dimension ensures compatibility with ATO/ATC blade fuse holders.

Q: What is the breaking capacity of these fuses?

A: Both the ATC-4 and BK/ATC-4 have a breaking capacity of 1kA at their rated voltage, meeting UL standards for automotive fuse protection.