FWA-1000A Equivalent & Substitute Parts

Part Overview

The FWA-1000A is a 1kA cartridge fuse manufactured by Eaton - Bussmann Electrical Division, rated for 150 VAC and 150 VDC operation. This bolt-mount cylindrical fuse is designed for electrical and industrial applications requiring high breaking capacity (200kA AC, 100kA DC). The part is currently active in production with 882 units in stock. Substitute parts are identified when equivalent electrical ratings and mechanical compatibility are maintained across manufacturers, enabling procurement flexibility and supply chain continuity.

Substiute Parts

FWA-1000A

Eaton - Bussmann Electrical DivisionIn Stock: 980FWA-1000A Datasheet

Current PartRFQ

L15S1000V

Littelfuse Inc.In Stock: 931L15S1000V Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

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

• Current Rating: Must be 1kA
• Voltage Rating - AC: Must be 150 VAC minimum
• Voltage Rating - DC: Must be 150 VDC minimum
• Fuse Type: Must be Cartridge
• Mounting Type: Must be Bolt Mount
• Package / Case: Must be Cylindrical with Blade Terminal (Bolt)
• Size / Dimension: Must be 1.500" Dia x 1.252" L (38.10mm x 31.80mm)

The L15S1000V from Littelfuse Inc. meets the current rating, AC voltage rating, mounting type, package configuration, and physical dimensions. However, the DC voltage rating is 100 VDC, which is below the 150 VDC specification of the FWA-1000A. This difference must be evaluated against application requirements.

Parameter Comparison

Engineering Selection Recommendations

The L15S1000V cartridge fuse from Littelfuse Inc. shares identical current rating, AC voltage rating, mounting configuration, and physical dimensions with the FWA-1000A. Both parts are active products with current manufacturing status and hold relevant regulatory approvals (CE, UR). The L15S1000V carries additional CSA certification and meets ROHS3 compliance.

Selection between these parts must account for the following differences:

• The L15S1000V has a reduced DC voltage rating of 100 VDC compared to the FWA-1000A specification of 150 VDC. Applications operating at DC voltages above 100 VDC require the FWA-1000A.
• The L15S1000V exhibits lower breaking capacity (100kA AC, 20kA DC) relative to the FWA-1000A (200kA AC, 100kA DC). Circuit protection requirements demanding higher breaking capacity necessitate the FWA-1000A.
• The L15S1000V is specified as Fast Blow response, whereas the FWA-1000A response time is not provided in available data.

Both parts are suitable for applications operating at or below 100 VDC with breaking capacity requirements not exceeding 100kA AC or 20kA DC.

Frequently Asked Questions (FAQ)

Q: Can the L15S1000V replace the FWA-1000A in all applications?

A: No. The L15S1000V is suitable only for applications operating at DC voltages of 100 VDC or lower and requiring breaking capacity not exceeding 100kA AC or 20kA DC. Applications requiring 150 VDC operation or higher breaking capacity must use the FWA-1000A.

Q: Are the physical dimensions identical between FWA-1000A and L15S1000V?

A: Yes. Both parts are 1.500" diameter by 1.252" length (38.10mm x 31.80mm) with identical cylindrical, blade terminal bolt-mount configurations, ensuring mechanical compatibility in existing mounting hardware.

Q: What regulatory approvals apply to each part?

A: The FWA-1000A holds CE and UR approvals. The L15S1000V holds CE, CSA, and UR approvals. Both meet RoHS compliance standards (FWA-1000A: RoHS Compliant; L15S1000V: ROHS3 Compliant).

Q: What is the difference in breaking capacity between these fuses?

A: The FWA-1000A provides 200kA AC and 100kA DC breaking capacity. The L15S1000V provides 100kA AC and 20kA DC breaking capacity. Applications requiring higher fault current interruption capability must specify the FWA-1000A.

Q: Are both parts currently available?

A: Yes. The FWA-1000A has 882 units in stock (Bulk packaging). The L15S1000V has 849 units in stock (Box packaging). Both are active products in current production.