FWH-10A14F Equivalent & Substitute Parts

Part Overview

The FWH-10A14F is a 10A cartridge fuse rated for 500 VAC and 500 VDC operation, manufactured by Eaton - Bussmann Electrical Division. This component is actively produced and widely used in electrical and industrial applications requiring reliable overcurrent protection. The fuse requires a compatible holder for installation and is RoHS compliant. Substitute parts may be necessary due to inventory availability, regional sourcing requirements, or specific application constraints while maintaining equivalent electrical and mechanical performance.

Substiute Parts

FWH-10A14F

Eaton - Bussmann Electrical DivisionIn Stock: 995FWH-10A14F Datasheet

Current PartRFQ

L50S010.T

LittelfuseIn Stock: 1094L50S010.T Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the FWH-10A14F is determined by the following critical parameters:

• Current Rating: Must be 10A
• Voltage Rating - AC: Must be 500 VAC minimum
• Voltage Rating - DC: Must be 500 VDC minimum
• Fuse Type: Must be Cartridge
• Physical Dimensions: Must be 0.563" Dia x 2.000" L (14.30mm x 50.80mm)
• Mounting Type: Must require holder compatibility
• Approval Agencies: Must include CE, CSA, UR certifications

The L50S010.T from Littelfuse meets the current rating, AC voltage, physical dimensions, mounting type, and certification requirements. However, the DC voltage rating is 450 VDC, which is below the 500 VDC specification of the main part. This difference must be evaluated against specific application requirements.

Parameter Comparison

Engineering Selection Recommendations

The L50S010.T cartridge fuse from Littelfuse is electrically and mechanically compatible with the FWH-10A14F for applications operating at 500 VAC. Both components carry identical AC voltage ratings, current ratings, physical dimensions, and required certifications (CE, CSA, UR). Both are actively produced and RoHS compliant.

The primary difference is the DC voltage rating: the L50S010.T is rated for 450 VDC compared to the FWH-10A14F's 500 VDC specification. Additionally, the breaking capacity at rated DC voltage differs (20kA versus 50kA). Selection between these parts depends on whether the application operates within the 450 VDC limit and whether the lower DC breaking capacity is acceptable for the circuit protection requirements.

Frequently Asked Questions (FAQ)

Q: Can the L50S010.T replace the FWH-10A14F in all applications?

A: The L50S010.T is mechanically and electrically compatible for AC applications at 500 VAC. For DC applications, the 450 VDC rating of the L50S010.T must not exceed the system voltage. If your circuit operates at 500 VDC, the FWH-10A14F is the appropriate choice.

Q: Are the physical dimensions identical?

A: Yes. Both fuses are 0.563" diameter by 2.000" length (14.30mm x 50.80mm), ensuring compatibility with the same holder assemblies.

Q: Do both fuses have the same certifications?

A: Yes. Both the FWH-10A14F and L50S010.T carry CE, CSA, and UR approvals, meeting the same regulatory standards.

Q: What is the difference in breaking capacity?

A: The FWH-10A14F has a breaking capacity of 200kA AC and 50kA DC at rated voltage. The L50S010.T has 200kA AC and 20kA DC. Breaking capacity indicates the maximum fault current the fuse can safely interrupt. The application circuit design determines whether the lower DC breaking capacity is acceptable.

Q: Are both fuses RoHS compliant?

A: Yes. The FWH-10A14F is RoHS Compliant, and the L50S010.T is ROHS3 Compliant, both meeting environmental compliance requirements.

Q: What is the response time difference?

A: The L50S010.T is specified as Fast Blow. The FWH-10A14F response time is not specified in the available data. Response time characteristics should be verified against application requirements if fast-acting protection is critical.