AT-5 Blade Fuse Equivalent & Substitute Parts

Part Overview

The AT-5 is a blade fuse manufactured by Eaton - Bussmann Electrical Division, classified as an AC DC fuse in the blade fuse category. This part is currently listed as obsolete, making identification of suitable substitute components essential for ongoing maintenance, repair, and new design applications. The AT-5 maintains RoHS compliance and carries an MSL rating of 1 (Unlimited), indicating minimal moisture sensitivity concerns during storage and handling.

Substiute Parts

AT-5

Eaton - Bussmann Electrical DivisionIn Stock: 1210AT-5 Datasheet

Current PartRFQ

ATC-5

Eaton - Bussmann Electrical DivisionIn Stock: 1149ATC-5 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the obsolete AT-5 is based on the following critical parameters derived from the provided data:

• Fuse Type & Form Factor: Blade configuration (ATO/ATC standard)
• Current Rating: 5 A nominal
• Voltage Rating: 32 V DC maximum
• Response Characteristic: Fast Blow
• Compliance & Certification: RoHS Compliant, UL Approval
• Regulatory Classification: ECCN EAR99, HTSUS 8536.10.0040

The ATC-5 qualifies as a direct substitute based on matching electrical specifications (5 A, 32 V DC), identical form factor (Blade, ATO/ATC), and equivalent regulatory compliance. Both components share the same HTSUS classification and ECCN designation, confirming functional and regulatory equivalence.

Parameter Comparison

Engineering Selection Recommendations

The ATC-5 is the designated substitute for the obsolete AT-5 based on the following engineering criteria:

Product Status & Availability: The AT-5 is obsolete, while the ATC-5 maintains active production status, ensuring long-term availability and supply chain continuity.

Regulatory Compliance: Both components carry RoHS Compliant certification and share identical ECCN (EAR99) and HTSUS (8536.10.0040) classifications, confirming regulatory equivalence for export and procurement purposes.

Certification & Approval: The ATC-5 carries UL approval, providing third-party validation of electrical safety and performance characteristics.

Electrical & Mechanical Specifications: The ATC-5 specifies 5 A current rating at 32 V DC with Fast Blow response, Blade ATO/ATC form factor, and 1 kA breaking capacity at rated voltage. These parameters align with the functional requirements of the AT-5 blade fuse category.

Frequently Asked Questions (FAQ)

Q: Can the ATC-5 be used as a direct replacement for the AT-5?

A: Yes. Both components are blade fuses manufactured by Eaton - Bussmann Electrical Division with matching regulatory classifications (ECCN EAR99, HTSUS 8536.10.0040) and RoHS compliance. The ATC-5 specifies 5 A at 32 V DC with Fast Blow response and Blade ATO/ATC form factor, meeting the functional requirements of the AT-5 category.

Q: What is the physical form factor of the ATC-5?

A: The ATC-5 uses the Blade ATO/ATC standard form factor with dimensions of 0.760" L x 0.207" W x 0.492" H (19.30mm x 5.25mm x 12.50mm). This form factor is compatible with standard ATO/ATC fuse holders.

Q: Does the ATC-5 require a specific holder?

A: Yes. The ATC-5 requires a holder designed for Blade ATO/ATC fuses. Ensure the holder is rated for 5 A at 32 V DC minimum.

Q: What is the breaking capacity of the ATC-5?

A: The ATC-5 has a breaking capacity of 1 kA at its rated voltage (32 V DC).

Q: Are both the AT-5 and ATC-5 RoHS compliant?

A: Yes. Both components are RoHS Compliant, meeting environmental and material restriction requirements for electronic components.

Q: What is the response characteristic of the ATC-5?

A: The ATC-5 is a Fast Blow fuse, providing rapid response to overcurrent conditions.