FWA-1000AH Equivalent & Substitute Parts

Part Overview

The FWA-1000AH is a 1kA cartridge fuse manufactured by Eaton - Bussmann Electrical Division, rated for 130 VAC and 130 VDC operation. This component is designed for electrical and industrial applications requiring high breaking capacity (200kA AC, 50kA DC) and is currently in active production status. Substitute parts are identified when equivalent current ratings and voltage compatibility can be maintained within acceptable operational parameters for the intended application.

Substiute Parts

FWA-1000AH

Eaton - Bussmann Electrical DivisionIn Stock: 783FWA-1000AH Datasheet

Current PartRFQ

L15S1000V

Littelfuse Inc.In Stock: 931L15S1000V Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the FWA-1000AH is determined by the following critical parameters:

• Current Rating: Must equal 1kA
• Voltage Rating - AC: Must meet or exceed 130 VAC
• Voltage Rating - DC: Must meet or exceed 130 VDC
• Fuse Type: Must be Cartridge configuration
• Breaking Capacity: Must support the application's fault current requirements

The L15S1000V from Littelfuse Inc. meets the current rating requirement (1kA) and maintains cartridge fuse type compatibility. However, the DC voltage rating (100 VDC) falls below the FWA-1000AH specification (130 VDC), and the AC voltage rating (150 VAC) exceeds the original specification. The breaking capacity is also reduced (100kA AC, 20kA DC versus 200kA AC, 50kA DC). These differences require application-specific evaluation to determine suitability.

Parameter Comparison

Engineering Selection Recommendations

Both the FWA-1000AH and L15S1000V are active production components with current regulatory compliance. The FWA-1000AH maintains higher breaking capacity ratings and equal DC voltage specification. The L15S1000V provides higher AC voltage rating and CSA certification in addition to CE and UR approvals. Selection between these components depends on the specific circuit voltage and fault current requirements of the application. Mounting type differences (holder-based versus bolt mount) require mechanical compatibility verification with the installation fixture.

Frequently Asked Questions (FAQ)

Q: Can the L15S1000V directly replace the FWA-1000AH?

A: Direct replacement requires verification that the application circuit operates at or below 100 VDC and that the reduced breaking capacity (100kA AC, 20kA DC) is acceptable for the fault current environment. Mounting type differences must also be accommodated.

Q: What is the significance of the breaking capacity difference?

A: Breaking capacity indicates the maximum fault current the fuse can safely interrupt. The FWA-1000AH (200kA AC, 50kA DC) has higher capacity than the L15S1000V (100kA AC, 20kA DC). Selection must ensure the fuse breaking capacity exceeds the maximum available fault current in the circuit.

Q: Are there voltage rating compatibility concerns?

A: The L15S1000V DC voltage rating (100 VDC) is lower than the FWA-1000AH (130 VDC). Use the L15S1000V only in circuits where the maximum DC voltage does not exceed 100 VDC. The L15S1000V AC rating (150 VAC) exceeds the FWA-1000AH (130 VAC), providing margin in AC applications.

Q: How do mounting type differences affect selection?

A: The FWA-1000AH requires a separate holder assembly, while the L15S1000V uses bolt mount terminals. The installation fixture must be compatible with the selected mounting configuration. Physical dimensions also differ (50.80mm versus 38.10mm diameter), affecting space requirements.

Q: What certifications apply to each component?

A: The FWA-1000AH holds CE and UR certifications. The L15S1000V holds CE, CSA, and UR certifications. Both meet applicable regulatory standards for their respective markets.