FWH-007A6F Equivalent & Substitute Parts

Part Overview

The FWH-007A6F is a 7A 500VAC cartridge fuse manufactured by Eaton - Bussmann Electrical Division. This component is designed for electrical and industrial applications requiring overcurrent protection in AC circuits. The part maintains Active product status with 895 units in current inventory. Substitute parts are identified when equivalent electrical protection characteristics and mechanical compatibility are required due to availability constraints, application-specific voltage requirements, or inventory optimization.

Substiute Parts

FWH-007A6F

Eaton - Bussmann Electrical DivisionIn Stock: 939FWH-007A6F Datasheet

Current PartRFQ

AHC-8-R

Eaton - Electronics DivisionIn Stock: 1093AHC-8-R Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the FWH-007A6F is determined by the following critical parameters:

• Current Rating tolerance within application requirements
• Voltage Rating equal to or exceeding 500 VAC
• Cartridge fuse type with identical mechanical form factor
• Package designation 3AB/3AG with matching physical dimensions (1/4" x 1-1/4")
• Mounting compatibility with existing fuse holders
• Regulatory compliance with required approval agencies

The AHC-8-R is identified as a substitute part based on mechanical compatibility (identical package and dimensions) and cartridge fuse construction. However, electrical parameter differences exist and must be evaluated against specific circuit requirements.

Parameter Comparison

Engineering Selection Recommendations

Selection between FWH-007A6F and AHC-8-R must account for the following electrical and regulatory factors:

The FWH-007A6F operates at 500 VAC with a 7A current rating and 50kA breaking capacity. The AHC-8-R operates at 600 VAC with an 8A current rating and 10kA breaking capacity. Both components share identical mechanical packaging (3AB/3AG, 1/4" x 1-1/4") and mounting requirements.

The AHC-8-R exhibits higher voltage rating capability (600 VAC vs. 500 VAC) and ceramic construction, suitable for applications requiring enhanced thermal stability. However, the reduced breaking capacity (10kA vs. 50kA) and lower melting I²t value (35 vs. 50) indicate different fault current handling characteristics.

Regulatory compliance differs: FWH-007A6F carries CE, CSA, and UR approvals, while AHC-8-R carries UL approval. Application-specific certification requirements must be verified before substitution.

Frequently Asked Questions (FAQ)

Q: Can AHC-8-R directly replace FWH-007A6F in all applications?

A: Mechanical compatibility exists due to identical package designation and dimensions. However, electrical parameter differences (current rating 8A vs. 7A, voltage rating 600 VAC vs. 500 VAC, breaking capacity 10kA vs. 50kA) require circuit-level evaluation. Regulatory approval differences must also be confirmed against application requirements.

Q: What are the key mechanical compatibility factors?

A: Both parts use 3AB/3AG package designation with 1/4" x 1-1/4" form factor. Physical dimensions are nearly identical (FWH-007A6F: 0.252" Dia x 1.252" L; AHC-8-R: 0.250" Dia x 1.250" L). Both require external fuse holders for mounting. Mechanical interchangeability in standard fuse holders is supported by these specifications.

Q: How do current ratings affect substitution?

A: FWH-007A6F is rated at 7A while AHC-8-R is rated at 8A. The higher current rating of AHC-8-R means it will tolerate greater continuous current before opening. Circuit design must confirm that 8A protection is acceptable for the protected load. Undersizing (using lower current rating) is not permissible; oversizing requires application verification.

Q: What is the significance of breaking capacity differences?

A: FWH-007A6F has 50kA breaking capacity; AHC-8-R has 10kA. Breaking capacity defines the maximum fault current the fuse can safely interrupt without rupture or hazard. Applications with fault currents exceeding 10kA require the higher capacity of FWH-007A6F. System fault analysis is necessary to determine applicable breaking capacity requirements.

Q: Are regulatory approvals interchangeable?

A: FWH-007A6F carries CE, CSA, and UR approvals. AHC-8-R carries UL approval. These certifications are not equivalent across all jurisdictions and applications. Equipment design documentation must specify required approvals. Substitution is only permissible when AHC-8-R certifications satisfy application requirements.