FWH-30A14F Equivalent & Substitute Parts

Part Overview

The FWH-30A14F is a 30A cartridge fuse rated for 500 VAC and 500 VDC operation, manufactured by Eaton - Bussmann Electrical Division. This component is actively produced and widely stocked (5400 pcs available). Cartridge fuses of this specification are essential in electrical and industrial applications requiring reliable overcurrent protection. Alternative equivalent parts may be required due to supply constraints, regional availability, or specific application requirements while maintaining identical electrical and mechanical compatibility.

Substiute Parts

FWH-30A14F

Eaton - Bussmann Electrical DivisionIn Stock: 5494FWH-30A14F Datasheet

Current PartRFQ

L50S030.T

Littelfuse Inc.In Stock: 1071L50S030.T Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the FWH-30A14F is determined by the following critical parameters:

• Current Rating: Must be 30A
• Voltage Rating - AC: Must be 500 VAC minimum
• Fuse Type: Must be Cartridge
• Physical Dimensions: Must be 0.563" Dia x 2.000" L (14.30mm x 50.80mm) to ensure mechanical compatibility with existing holders
• Mounting Type: Must require holder (same installation method)
• Approval Certifications: Must maintain CE, CSA, and UR compliance

The L50S030.T from Littelfuse Inc. meets all critical substitution criteria. While the DC voltage rating differs (450 VDC vs. 500 VDC), the AC rating matches exactly at 500 VAC, and all mechanical and certification requirements are satisfied.

Parameter Comparison

Engineering Selection Recommendations

Both the FWH-30A14F and L50S030.T are active products with full regulatory compliance (CE, CSA, UR certifications). Selection between these parts should be based on application voltage requirements and DC breaking capacity specifications. The FWH-30A14F provides higher DC voltage rating (500 VDC) and superior DC breaking capacity (50kA DC), making it suitable for applications requiring maximum DC performance. The L50S030.T is suitable for applications where the 450 VDC DC rating and 20kA DC breaking capacity are sufficient. Both components maintain identical AC performance at 500 VAC and 200kA AC breaking capacity. RoHS compliance is confirmed for both parts, with the L50S030.T meeting the more recent ROHS3 standard.

Frequently Asked Questions (FAQ)

Q: Can L50S030.T be used as a direct replacement for FWH-30A14F in all applications?

A: The L50S030.T is mechanically and electrically compatible for AC applications at 500 VAC. However, for DC applications, the reduced DC voltage rating (450 VDC vs. 500 VDC) and lower DC breaking capacity (20kA vs. 50kA) must be evaluated against specific circuit requirements. Substitution is valid only when the application DC voltage does not exceed 450 VDC and the fault current does not exceed 20kA DC.

Q: Are the physical dimensions identical between these parts?

A: Yes. Both the FWH-30A14F and L50S030.T share identical cartridge dimensions of 0.563" Dia x 2.000" L (14.30mm x 50.80mm), ensuring mechanical compatibility with standard cartridge fuse holders.

Q: Do both parts meet the same regulatory standards?

A: Yes. Both components carry CE, CSA, and UR certifications. The L50S030.T additionally meets ROHS3 compliance, which is a more recent environmental standard than the RoHS compliance of the FWH-30A14F.

Q: What is the difference in response time between these fuses?

A: The L50S030.T is specified as Fast Blow. The FWH-30A14F response time specification is not provided in the available data. Response time characteristics should be confirmed with application requirements before substitution.

Q: Are there inventory considerations for these parts?

A: The FWH-30A14F has 5400 pcs in stock, while the L50S030.T has 1030 pcs available. Supply availability may influence component selection decisions.