Littelfuse 0ATO040.VP Automotive Fuse - Equivalent & Substitute Parts

Part Overview

The Littelfuse 0ATO040.VP is a 40 A automotive blade fuse rated for 32 V AC/DC operation. This fast-blow fuse is designed for automotive electrical circuit protection and requires an ATO/ATC blade fuse holder for installation. The part is actively manufactured and maintains full compliance with RoHS3, REACH, and international safety standards including CSA, SAE, and UL certifications. Substitute parts are identified when equivalent electrical and mechanical parameters are maintained across the same fuse category and form factor.

Substiute Parts

0ATO040.VP

Littelfuse Inc.In Stock: 7160ATO040.VP Datasheet

Current PartRFQ

0ATO040.V

Littelfuse Inc.In Stock: 17340ATO040.V Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 0ATO040.VP is determined by strict equivalence across the following critical parameters:

• Current Rating: 40 A (exact match required)
• Voltage Rating: 32 V AC and 32 V DC (exact match required)
• Fuse Type: Automotive blade fuse (ATO/ATC form factor)
• Response Time: Fast Blow characteristic
• Physical Dimensions: 0.750" L x 0.200" W x 0.480" H

The substitute part 0ATO040.V meets all these criteria and is therefore classified as a parametric equivalent. Both parts are manufactured by Littelfuse Inc. under the ATO® series designation and maintain identical electrical and mechanical specifications.

Parameter Comparison

Engineering Selection Recommendations

Both the 0ATO040.VP and 0ATO040.V are active products manufactured by Littelfuse Inc. and maintain full compliance with RoHS3 and REACH regulations. The 0ATO040.VP is supplied in bulk packaging with a 5-piece card configuration, while the 0ATO040.V is supplied in bulk packaging without the card format. Both parts carry identical electrical ratings, mechanical dimensions, and safety certifications (CSA, SAE, UL for the main part; UL for the substitute). Selection between these parts should be based on packaging requirements and inventory availability rather than electrical or mechanical performance differences.

Frequently Asked Questions (FAQ)

Q: Can the 0ATO040.V be used as a direct replacement for the 0ATO040.VP?

A: Yes. Both parts are parametric equivalents with identical current ratings (40 A), voltage ratings (32 V AC/DC), response time (Fast Blow), and ATO/ATC blade form factor. The primary difference is packaging format: the 0ATO040.VP includes a 5-piece card configuration, while the 0ATO040.V is supplied in bulk.

Q: What determines if a fuse can substitute for the 0ATO040.VP?

A: Substitution requires exact equivalence in current rating (40 A), voltage rating (32 V AC and DC), fuse type (automotive blade), response time (fast blow), and physical dimensions (0.750" L x 0.200" W x 0.480" H). Any deviation in these parameters disqualifies a part from substitution.

Q: Are there compliance or certification differences between these parts?

A: The 0ATO040.VP carries CSA, SAE, and UL certifications. The 0ATO040.V carries UL certification. Both are RoHS3 compliant and REACH unaffected. Verify that the certification set of the substitute meets your application requirements.

Q: Does packaging format affect electrical performance?

A: No. Packaging format (card vs. bulk) does not affect electrical performance, voltage rating, current rating, or response time. Selection should be based on procurement and assembly requirements.

Q: What is the physical form factor of these fuses?

A: Both parts use the ATO/ATC blade fuse form factor with dimensions of 0.750" L x 0.200" W x 0.480" H (19.05mm x 5.08mm x 12.19mm). These fuses require an ATO/ATC blade fuse holder for installation.