ECNR5 Equivalent & Substitute Parts Reference

Part Overview

The ECNR5 is a 5A cartridge fuse rated for 250 VAC and 125 VDC operation, manufactured by Eaton - Bussmann Electrical Division. This slow-blow fuse cartridge is designed for electrical and industrial applications requiring RK5 class protection with a breaking capacity of 200kA at rated voltage. The part is currently active in production with RoHS compliance and multiple approval certifications (CE, CSA, UL). Substitute parts are identified when equivalent electrical ratings, mechanical dimensions, and functional characteristics align with the original specification, ensuring direct interchangeability in holder-based fuse installations.

Substiute Parts

ECNR5

Eaton - Bussmann Electrical DivisionIn Stock: 1185ECNR5 Datasheet

Current PartRFQ

FRN-R-5

Eaton - Bussmann Electrical DivisionIn Stock: 680FRN-R-5 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ECNR5 is determined by strict equivalence across the following critical parameters:

• Current Rating: 5A (exact match required)
• Voltage Rating - AC: 250 VAC (exact match required)
• Voltage Rating - DC: 125 VDC (exact match required)
• Fuse Type: Cartridge (exact match required)
• Response Time: Slow Blow (exact match required)
• Class: RK5 (exact match required)
• Physical Dimensions: 0.560" Dia x 2.000" L (exact match required for holder compatibility)
• Breaking Capacity: 200kA minimum at rated voltage
• Approval Certifications: CE, CSA, UL (required for regulatory compliance)

The FRN-R-5 meets all substitution criteria and is classified as a direct equivalent.

Parameter Comparison

Engineering Selection Recommendations

Both the ECNR5 and FRN-R-5 are active production parts from Eaton - Bussmann Electrical Division with identical electrical ratings, mechanical dimensions, and regulatory certifications. Selection between these parts may be based on inventory availability, lead time, or internal procurement specifications. Both parts carry CE, CSA, and UL approvals, confirming compliance with applicable electrical safety standards. RoHS compliance is maintained across both options. The FRN-R-5 is designated as part of the Fusetron™ FRN-R series, while the ECNR5 belongs to the ECNR series; however, this series designation does not affect electrical or mechanical interchangeability when all rated parameters are equivalent.

Frequently Asked Questions (FAQ)

Q: Can the FRN-R-5 be used as a direct replacement for the ECNR5?

A: Yes. The FRN-R-5 meets all substitution criteria: identical current rating (5A), voltage ratings (250 VAC / 125 VDC), fuse class (RK5), response time (Slow Blow), physical dimensions (0.560" Dia x 2.000" L), and regulatory certifications (CE, CSA, UL). Both parts are manufactured by Eaton - Bussmann Electrical Division and are RoHS compliant.

Q: Are there any dimensional differences between these parts?

A: No. Both the ECNR5 and FRN-R-5 share identical physical dimensions of 0.560" diameter by 2.000" length (14.22mm x 50.80mm), ensuring compatibility with the same cartridge fuse holders.

Q: What is the difference between the ECNR and FRN-R series designations?

A: Series designation reflects product line organization within Eaton - Bussmann's portfolio. The ECNR5 belongs to the ECNR series, while the FRN-R-5 is part of the Fusetron™ FRN-R series. Despite different series names, both parts are electrically and mechanically equivalent when all rated parameters match.

Q: Do both parts require a fuse holder for installation?

A: Yes. Both the ECNR5 and FRN-R-5 are cartridge fuses that require a compatible holder for installation. The identical physical dimensions ensure compatibility with the same holder designs.

Q: Are regulatory certifications identical for both parts?

A: Yes. Both parts carry CE, CSA, and UL approvals. Both are RoHS compliant. Regulatory compliance is equivalent across both options.

Q: What is the breaking capacity difference noted in the specifications?

A: The ECNR5 specifies 200kA breaking capacity at rated voltage. The FRN-R-5 specifies 200kA AC and 20kA DC. Both meet the minimum 200kA requirement at rated voltage for this application class.