FWH-.250A6F Equivalent & Substitute Parts

Part Overview

The FWH-.250A6F is a 250mA cartridge fuse manufactured by Eaton - Bussmann Electrical Division, rated for 500 VAC operation. This component is designed for electrical and industrial applications requiring overcurrent protection in holder-based installations. The part maintains Active product status with 885 units in current inventory. Substitute parts are identified when equivalent electrical performance and mechanical compatibility can be maintained across the specified parameter range.

Substiute Parts

FWH-.250A6F

Eaton - Bussmann Electrical DivisionIn Stock: 921FWH-.250A6F Datasheet

Current PartRFQ

AHC-250-R

Eaton - Electronics DivisionIn Stock: 810AHC-250-R Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the FWH-.250A6F is determined by the following critical parameters:

• Current Rating: Must be 250mA to maintain circuit protection design intent
• Voltage Rating - AC: Substitute must support minimum 500 VAC operation
• Fuse Type: Must be Cartridge configuration
• Package / Case: Must conform to 3AB, 3AG, 1/4" x 1-1/4" standard
• Mounting Type: Must require holder-based installation
• Physical Dimensions: Must be mechanically compatible with 0.252" Dia x 1.252" L envelope

The AHC-250-R meets these substitution criteria while providing enhanced voltage rating capability (600 VAC / 600 VDC) and extended operating temperature range.

Parameter Comparison

Engineering Selection Recommendations

Both the FWH-.250A6F and AHC-250-R are Active status components with current inventory availability. Selection between these parts should be based on application voltage requirements and breaking capacity specifications.

The FWH-.250A6F is suitable for 500 VAC circuits with 50kA breaking capacity requirement and CE, CSA, UR certification compliance.

The AHC-250-R provides higher voltage rating (600 VAC / 600 VDC capability) and extended operating temperature range (-55°C ~ 125°C), with cURus certification. The AHC-250-R is appropriate for applications requiring dual voltage operation or wider temperature performance, though breaking capacity is rated at 10kA.

Both components maintain RoHS compliance and holder-based mounting configuration. Physical dimensions are within standard 3AB/3AG cartridge envelope specifications.

Frequently Asked Questions (FAQ)

Q: Can AHC-250-R replace FWH-.250A6F in a 500 VAC circuit?

A: Yes. The AHC-250-R is rated for 600 VAC operation, which exceeds the 500 VAC requirement. Both components share identical 250mA current rating and 3AB/3AG package configuration.

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

A: FWH-.250A6F has 50kA breaking capacity at rated voltage, while AHC-250-R has 10kA breaking capacity. Application fault current levels must be evaluated to determine which breaking capacity is appropriate.

Q: Are the physical dimensions identical?

A: Dimensions are within standard cartridge fuse tolerance. FWH-.250A6F is 0.252" Dia x 1.252" L; AHC-250-R is 0.250" Dia x 1.250" L. Both conform to 3AB/3AG standard envelope and are mechanically compatible with standard cartridge fuse holders.

Q: What certifications apply to each part?

A: FWH-.250A6F carries CE, CSA, and UR approvals. AHC-250-R carries cURus certification. Application regulatory requirements determine which certification is necessary.

Q: Can AHC-250-R be used in DC circuits?

A: Yes. AHC-250-R is rated for 600 VDC operation. FWH-.250A6F DC rating is not specified in available data.