FWH-010A6F Equivalent & Substitute Parts

Part Overview

The FWH-010A6F is a 10A 600VAC cartridge fuse manufactured by Eaton - Bussmann Electrical Division. This component is designed for electrical and industrial applications requiring overcurrent protection in AC circuits rated up to 600 volts. The part is discontinued at DiGi Electronics, making identification of compatible substitute components essential for system maintenance and replacement scenarios.

Substiute Parts

FWH-010A6F

Eaton - Bussmann Electrical DivisionIn Stock: 5433FWH-010A6F Datasheet

Current PartRFQ

FWH5-010A6F

Eaton - Bussmann Electrical DivisionIn Stock: 841FWH5-010A6F Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the FWH-010A6F is determined by the following critical parameters:

• Current Rating: Must be 10A
• Fuse Type: Must be Cartridge
• Physical Dimensions: Must be 0.252" Dia x 1.252" L (6.40mm x 31.80mm)
• Mounting Configuration: Must require holder-based installation
• Melting I²t: Must be 9.9
• Breaking Capacity: Must be 50kA at rated voltage

The FWH5-010A6F qualifies as a direct substitute based on matching current rating, fuse type, physical dimensions, mounting type, melting I²t, and breaking capacity. The voltage rating difference (500VAC vs. 600VAC) represents a derating condition acceptable for applications originally designed for 600VAC operation.

Parameter Comparison

Engineering Selection Recommendations

The FWH5-010A6F is the qualified substitute for the discontinued FWH-010A6F based on the following factors:

Mechanical Compatibility: Both components share identical physical dimensions (0.252" Dia x 1.252" L), current rating (10A), and holder-based mounting configuration, ensuring direct mechanical and electrical interchangeability within the fuse holder assembly.

Electrical Performance: Both components maintain identical breaking capacity (50kA) and melting I²t (9.9), preserving circuit protection characteristics. The FWH5-010A6F operates at 500VAC, which represents a conservative derating from the original 600VAC specification and is suitable for applications operating at or below 500VAC.

Regulatory Compliance: The FWH5-010A6F carries CE, CSA, and UL certifications. While the original part included UR approval, the substitute maintains CE and CSA certifications common to both components. UL certification on the substitute provides equivalent third-party validation for North American applications.

Product Availability: The FWH5-010A6F is currently active in inventory (767 pcs), providing immediate availability for replacement and maintenance requirements.

Frequently Asked Questions (FAQ)

Q: Can the FWH5-010A6F be used in a circuit originally designed for the FWH-010A6F?

A: Yes, for applications operating at 500VAC or below. The FWH5-010A6F is rated for 500VAC, which is lower than the original 600VAC rating. If your circuit operates at or below 500VAC, the substitute is directly compatible. For circuits requiring 600VAC operation, the substitute provides derating protection.

Q: Are the physical dimensions identical between these two fuses?

A: Yes. Both the FWH-010A6F and FWH5-010A6F measure 0.252" diameter by 1.252" length (6.40mm x 31.80mm). They fit the same holder without modification.

Q: What is the difference between the response time specifications?

A: The FWH-010A6F does not specify a response time in the available data. The FWH5-010A6F is rated as Fast Blow, indicating rapid response to overcurrent conditions. This characteristic is suitable for circuits requiring quick fault isolation.

Q: Do the certifications differ between these components?

A: Both components carry CE and CSA certifications. The original FWH-010A6F includes UR approval, while the FWH5-010A6F includes UL certification. For applications requiring specific regional compliance, verify that the substitute's certification portfolio meets your system requirements.

Q: What does the aR class designation mean for the FWH5-010A6F?

A: The aR class indicates a fuse designed for general-purpose AC circuits with fast-blow characteristics. This classification is standard for industrial electrical protection applications.