ATC-20 Equivalent & Substitute Parts

Part Overview

The ATC-20 is a 20 A automotive blade fuse rated for 32 V DC operation, manufactured by Eaton - Bussmann Electrical Division. This fast-blow fuse is designed for automotive electrical systems requiring holder-based installation with ATO/ATC blade configuration. 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 manufacturers or product lines, ensuring direct interchangeability in automotive fuse applications.

Substiute Parts

ATC-20

Eaton - Bussmann Electrical DivisionIn Stock: 1074ATC-20 Datasheet

Current PartRFQ

BK/ATC-20

Eaton - Bussmann Electrical DivisionIn Stock: 1828BK/ATC-20 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ATC-20 is determined by strict equivalence across the following critical parameters:

• Current Rating: 20 A (exact match required)
• Voltage Rating - DC: 32 V (exact match required)
• Fuse Type: Automotive (exact match required)
• Response Time: Fast Blow (exact match required)
• Package / Case: Blade, ATO/ATC (exact match required)
• Breaking Capacity @ Rated Voltage: 1 kA (exact match required)
• Mounting Type: Requires Holder (exact match required)
• Physical Dimensions: 0.760" L x 0.207" W x 0.492" H (exact match required)

The BK/ATC-20 meets all substitution criteria as a parametric equivalent, maintaining identical electrical ratings, mechanical configuration, and physical form factor.

Parameter Comparison

Engineering Selection Recommendations

The BK/ATC-20 is a direct parametric equivalent to the ATC-20. Both parts are manufactured by Eaton - Bussmann Electrical Division, maintain active product status, and carry UL approval. The BK/ATC-20 demonstrates ROHS3 compliance with REACH Unaffected status, providing enhanced regulatory alignment. Selection between these parts may be based on inventory availability, supply chain considerations, or specific compliance documentation requirements for end applications. Both parts are suitable for identical automotive fuse holder installations without modification.

Frequently Asked Questions (FAQ)

Q: Can the BK/ATC-20 be used as a direct replacement for the ATC-20?

A: Yes. The BK/ATC-20 is a parametric equivalent with identical current rating (20 A), voltage rating (32 V DC), fuse type (automotive), response time (fast blow), package configuration (blade ATO/ATC), breaking capacity (1 kA), and physical dimensions. Both parts are manufactured by Eaton - Bussmann Electrical Division and carry UL approval.

Q: Are there any physical differences between these parts?

A: No. Both the ATC-20 and BK/ATC-20 share identical physical dimensions of 0.760" L x 0.207" W x 0.492" H (19.30 mm x 5.25 mm x 12.50 mm) and require the same ATO/ATC blade holder configuration.

Q: What is the difference in RoHS compliance between these parts?

A: The ATC-20 is RoHS Compliant, while the BK/ATC-20 is ROHS3 Compliant. Both meet RoHS requirements; ROHS3 represents a more recent compliance designation. The BK/ATC-20 additionally carries REACH Unaffected status.

Q: Do both parts have the same breaking capacity?

A: Yes. Both the ATC-20 and BK/ATC-20 have a breaking capacity of 1 kA at rated voltage.

Q: Can these fuses be used interchangeably in automotive electrical systems?

A: Yes. Both parts are automotive-rated fuses with identical electrical and mechanical specifications, suitable for direct interchangeability in any application requiring a 20 A, 32 V DC fast-blow blade fuse with ATO/ATC configuration.