FWA-500A Equivalent & Substitute Parts

Part Overview

The FWA-500A is a 500A fuse cartridge manufactured by Eaton - Bussmann Electrical Division, rated for 150 VAC and 150 VDC operation with bolt mount configuration. This component is designed for electrical and industrial applications requiring high-current protection in DC and AC circuits. The part maintains Active product status with 1042 units in current inventory. Substitute parts are identified to address application-specific requirements, inventory availability, or regional compliance needs while maintaining core electrical performance parameters.

Substiute Parts

FWA-500A

Eaton - Bussmann Electrical DivisionIn Stock: 1065FWA-500A Datasheet

Current PartRFQ

L15S500.V

Littelfuse Inc.In Stock: 1009L15S500.V Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the FWA-500A is determined by the following critical parameters:

• Current Rating: Must equal 500A
• Voltage Rating - AC: Must equal or exceed 150 VAC
• Voltage Rating - DC: Must equal or exceed 150 VDC
• Mounting Type: Must be Bolt Mount
• Fuse Type: Must be Cartridge
• Package / Case: Must be Cylindrical with Blade Terminal (Bolt)
• Physical Dimensions: Must be compatible with 1.500" Dia x 1.250" L envelope

The Littelfuse L15S500.V meets the primary electrical and mechanical substitution criteria with matching current rating, AC voltage rating, mounting configuration, and physical form factor. The DC voltage rating differential and breaking capacity variations are documented in the parameter comparison table below.

Parameter Comparison

Engineering Selection Recommendations

Both the FWA-500A and L15S500.V maintain Active product status with current manufacturing support. Selection between these components is determined by application voltage requirements and breaking capacity specifications.

The FWA-500A is specified for applications requiring 150 VDC operation with 200kA AC breaking capacity. This component carries CE and UR certifications.

The L15S500.V is specified for applications operating at 100 VDC maximum with 100kA AC breaking capacity. This component carries CE, CSA, and UR certifications, providing expanded regional compliance coverage. The L15S500.V is classified as Fast Blow response type.

Selection must confirm that the application DC voltage requirement does not exceed the rated component specification. Breaking capacity must meet or exceed the maximum available fault current at the installation point.

Frequently Asked Questions (FAQ)

Q: Can the L15S500.V replace the FWA-500A in all applications?

A: The L15S500.V is suitable for substitution only in applications where the DC voltage does not exceed 100 VDC. The FWA-500A is rated for 150 VDC operation. If the application requires 150 VDC operation, the FWA-500A must be used.

Q: What is the significance of the breaking capacity difference between these parts?

A: Breaking capacity indicates the maximum fault current the fuse can safely interrupt at rated voltage. The FWA-500A is rated for 200kA AC and 20kA DC. The L15S500.V is rated for 100kA AC and 20kA DC. The application's maximum available fault current must not exceed the fuse breaking capacity rating.

Q: Are the physical dimensions identical between these parts?

A: The dimensions are functionally equivalent. The FWA-500A measures 1.500" Dia x 1.250" L (38.10mm x 31.75mm). The L15S500.V measures 1.500" Dia x 1.252" L (38.10mm x 31.80mm). The 0.002" length difference is within standard manufacturing tolerance and does not affect mechanical compatibility in bolt mount applications.

Q: What certifications apply to each component?

A: The FWA-500A carries CE and UR certifications. The L15S500.V carries CE, CSA, and UR certifications. Both components meet the specified approval requirements for their respective applications.

Q: What does "Fast Blow" response time mean for the L15S500.V?

A: Fast Blow indicates the fuse element melts and opens the circuit rapidly in response to overcurrent conditions. This characteristic is specified for the L15S500.V. The FWA-500A response time is not specified in the provided data.