AMX-300 Automotive Fuse Equivalent & Substitute Parts

Part Overview

The AMX-300 is a 300A automotive fuse rated for 125V DC operation with bolt mount configuration and Auto Link package type. Manufactured by Eaton - Electronics Division, this component is classified as Active product status. The AMX-300 serves critical circuit protection functions in automotive electrical systems requiring high current capacity and reliable fault interruption. Identifying equivalent substitute parts ensures supply chain continuity and maintains design compatibility when the primary part becomes unavailable.

Substiute Parts

AMX-300

Eaton - Electronics DivisionIn Stock: 973AMX-300 Datasheet

Current PartRFQ

AMXL-300

Eaton - Electronics DivisionIn Stock: 995AMXL-300 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the AMX-300 are determined by strict equivalence across the following critical parameters:

Current Rating: 300 A (exact match required)

Voltage Rating - DC: 125 V (exact match required)

Fuse Type: Automotive (exact match required)

Mounting Type: Bolt Mount (exact match required)

Package / Case: Auto Link (exact match required)

Breaking Capacity @ Rated Voltage: 3 kA (exact match required)

Operating Temperature Range: -40°C ~ 105°C (exact match required)

DC Cold Resistance: 0.00016 Ohms (exact match required)

Physical Dimensions: 0.630" L x 0.472" W x 0.335" H / 16.00mm x 12.00mm x 8.50mm (exact match required)

Approval Certifications: cURus, UL (exact match required)

RoHS Compliance: ROHS3 Compliant (exact match required)

Substitute parts must satisfy all parameters listed above without deviation. Series designation may differ while maintaining full electrical and mechanical compatibility.

Parameter Comparison

Engineering Selection Recommendations

The AMXL-300 is a direct parametric equivalent to the AMX-300. Both components are manufactured by Eaton - Electronics Division and maintain Active product status. All electrical specifications, mechanical dimensions, and regulatory certifications are identical between the two parts.

Selection between AMX-300 and AMXL-300 is based on availability and inventory status. The AMX-300 maintains 918 pieces in stock, while the AMXL-300 maintains 940 pieces in stock. Both parts carry identical cURus and UL approvals and ROHS3 compliance certification, ensuring regulatory equivalence for automotive circuit protection applications.

Frequently Asked Questions (FAQ)

Q: Can AMXL-300 be used as a direct replacement for AMX-300?

A: Yes. The AMXL-300 is a parametric equivalent with identical electrical ratings (300A, 125V DC), mechanical configuration (bolt mount, Auto Link package), physical dimensions (16.00mm x 12.00mm x 8.50mm), and regulatory certifications (cURus, UL, ROHS3).

Q: Are there differences in breaking capacity between AMX-300 and AMXL-300?

A: No. Both parts have identical breaking capacity of 3 kA at rated voltage.

Q: Do both parts operate across the same temperature range?

A: Yes. Both AMX-300 and AMXL-300 operate across -40°C to 105°C.

Q: Is the DC cold resistance identical between these parts?

A: Yes. Both parts have DC cold resistance of 0.00016 Ohms.

Q: What is the physical footprint difference between these parts?

A: There is no physical footprint difference. Both parts measure 0.630" L x 0.472" W x 0.335" H (16.00mm x 12.00mm x 8.50mm).

Q: Are both parts RoHS compliant?

A: Yes. Both AMX-300 and AMXL-300 are ROHS3 compliant.

Q: Which part should be selected based on availability?

A: Selection should be based on current inventory status and supply chain requirements. AMXL-300 currently has 940 pieces in stock compared to AMX-300 with 918 pieces in stock.