AMG-250 Equivalent & Substitute Parts

Part Overview

The AMG-250 is a 250 A automotive fuse rated for 32 V DC operation with bolt mount configuration and Auto Link package type. Manufactured by Eaton - Bussmann Electrical Division, this component is classified as Active product status. Substitute parts are identified when equivalent electrical ratings, mechanical compatibility, and regulatory compliance align with the original specification, enabling direct replacement in automotive electrical systems.

Substiute Parts

AMG-250

Eaton - Bussmann Electrical DivisionIn Stock: 1039AMG-250 Datasheet

Current PartRFQ

153.5395.6252

Littelfuse Inc.In Stock: 1276153.5395.6252 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the AMG-250 is determined by strict alignment of the following parameters:

• Current Rating: 250 A (exact match required)
• Voltage Rating - DC: 32 V (exact match required)
• Fuse Type: Automotive (exact match required)
• Mounting Type: Bolt Mount (exact match required)
• Package / Case: Auto Link (exact match required)
• RoHS Status: ROHS3 Compliant (regulatory requirement)

The substitute part 154.6395.6252 (Littelfuse Inc., BF2 Series) meets all mandatory electrical and mechanical parameters. Dimensional variations and enhanced breaking capacity do not preclude substitution when core ratings align.

Parameter Comparison

Engineering Selection Recommendations

Both the AMG-250 and 154.6395.6252 maintain Active product status and full ROHS3 compliance. The substitute part 154.6395.6252 provides equivalent electrical performance at the specified 250 A and 32 V DC ratings. The enhanced breaking capacity of 2 kA in the Littelfuse component exceeds the original 1 kA specification, offering improved fault protection margins. Dimensional differences are minor and remain within automotive bolt mount installation tolerances. Selection between these parts depends on availability, lead time, and system-level design requirements for breaking capacity performance.

Frequently Asked Questions (FAQ)

Q: Can 154.6395.6252 directly replace AMG-250 in automotive applications?

A: Yes. Both parts share identical current rating (250 A), voltage rating (32 V DC), fuse type (Automotive), mounting type (Bolt Mount), and package type (Auto Link). Both are ROHS3 compliant and Active status products.

Q: What is the significance of the different breaking capacities (1 kA vs. 2 kA)?

A: Breaking capacity defines the maximum fault current the fuse can safely interrupt. The 154.6395.6252 with 2 kA breaking capacity provides enhanced fault protection compared to the 1 kA specification of AMG-250. This represents an improvement in system safety margins.

Q: Are the dimensional differences between these parts critical?

A: Dimensional variations (AMG-250: 29.20mm x 15.40mm x 9.00mm; 154.6395.6252: 29.00mm x 18.80mm x 9.70mm) are minor. Both maintain Auto Link package compatibility and bolt mount installation. Verify mounting cavity clearance in your specific application.

Q: Does the Slow Blow response time of 154.6395.6252 affect compatibility?

A: Response time characteristics are determined by internal fuse element design. The Slow Blow designation indicates the 154.6395.6252 is engineered for automotive applications where transient current spikes are common. Confirm that your circuit design accommodates this response characteristic.

Q: Are both parts suitable for 32 V DC automotive systems?

A: Yes. Both AMG-250 and 154.6395.6252 are rated for 32 V DC operation and are classified as automotive fuses, making them suitable for automotive electrical systems operating at this voltage.