FWH-020A6FR Equivalent & Substitute Parts

Part Overview

The FWH-020A6FR is a 20A 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 equivalent alternatives essential for ongoing system maintenance and component procurement.

Substiute Parts

FWH-020A6FR

Eaton - Bussmann Electrical DivisionIn Stock: 953FWH-020A6FR Datasheet

Current PartRFQ

FWH5-020A6FR

Eaton - Bussmann Electrical DivisionIn Stock: 1062FWH5-020A6FR Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the FWH-020A6FR is determined by the following critical parameters:

• Current Rating: 20A (exact match required)
• Voltage Rating: 600VAC minimum (equal or higher acceptable)
• Fuse Type: Cartridge configuration
• Physical Dimensions: 6.40mm x 31.80mm (6x32mm standard)
• Breaking Capacity: 50kA minimum
• Melting I²t: 75 (thermal characteristic match)
• Regulatory Compliance: CE, CSA, UR certifications
• RoHS Compliance: Required

The substitute part FWH5-020A6FR meets these criteria as a direct equivalent from the same manufacturer.

Parameter Comparison

Engineering Selection Recommendations

The FWH5-020A6FR serves as the active equivalent for the discontinued FWH-020A6FR. Both components are manufactured by Eaton - Bussmann Electrical Division and share identical current ratings (20A) and physical dimensions (6x32mm cartridge format). The substitute maintains RoHS compliance and cartridge-type construction compatible with standard fuse holders.

The voltage rating difference (500VAC vs. 600VAC) represents a derating condition. The FWH5-020A6FR is suitable for applications where the circuit voltage does not exceed 500VAC. For circuits operating at voltages between 500VAC and 600VAC, the original FWH-020A6FR specification must be maintained, or alternative 600VAC-rated 20A cartridge fuses from other manufacturers must be evaluated.

Both parts carry regulatory approvals from CE, CSA, and UR agencies, ensuring compliance with industrial and electrical safety standards.

Frequently Asked Questions (FAQ)

Q: Can FWH5-020A6FR replace FWH-020A6FR in all applications?

A: The FWH5-020A6FR is a direct substitute only for applications operating at 500VAC or below. For circuits rated 500VAC to 600VAC, the original FWH-020A6FR specification must be maintained or alternative 600VAC-rated cartridge fuses must be sourced.

Q: Are the physical dimensions identical between these parts?

A: Yes. Both components use the standard 6x32mm (0.252" Dia x 1.252" L) cartridge format and are compatible with the same fuse holders.

Q: What is the significance of the voltage rating difference?

A: The voltage rating indicates the maximum AC voltage at which the fuse is designed to safely interrupt fault currents. A 500VAC-rated fuse should not be used in circuits exceeding 500VAC. The original 600VAC rating provides margin for higher-voltage applications.

Q: Are both parts RoHS compliant?

A: Yes. Both FWH-020A6FR and FWH5-020A6FR are RoHS compliant and suitable for applications requiring environmental compliance.

Q: What is the current status of these parts?

A: FWH-020A6FR is discontinued at DiGi Electronics. FWH5-020A6FR is currently active and available for procurement.