ECNR25 Equivalent & Substitute Parts Reference

Part Overview

The ECNR25 is a 25A cartridge fuse rated for 250 VAC and 125 VDC operation, manufactured by Eaton - Bussmann Electrical Division. This slow-blow fuse 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 860 units in stock. Substitute parts are identified when equivalent electrical ratings, mechanical dimensions, and approval certifications align with the original specification, enabling direct replacement in existing holder assemblies.

Substiute Parts

ECNR25

Eaton - Bussmann Electrical DivisionIn Stock: 916ECNR25 Datasheet

Current PartRFQ

FRN-R-25

Eaton - Bussmann Electrical DivisionIn Stock: 1124FRN-R-25 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ECNR25 is determined by strict equivalence across the following parameters:

• Current Rating: 25A (exact match required)
• Voltage Ratings: 250 VAC and 125 VDC (both must match)
• Response Time: Slow Blow (exact match required)
• Fuse Class: RK5 (exact match required)
• Physical Dimensions: 0.560" Dia x 2.000" L (exact match required for holder compatibility)
• Approval Certifications: CE, CSA, UL (minimum set required)

The FRN-R-25 meets all substitution criteria and is classified as a direct equivalent. Both parts share identical electrical specifications, mechanical form factors, and regulatory approvals, enabling interchangeable use within the same fuse holder assembly.

Parameter Comparison

Engineering Selection Recommendations

The FRN-R-25 is a direct substitute for the ECNR25 based on complete electrical and mechanical equivalence. Both parts are manufactured by Eaton - Bussmann Electrical Division, carry identical current and voltage ratings, and hold the same regulatory certifications (CE, CSA, UL). Both parts maintain active product status and share identical RoHS compliance status. Selection between these parts may be based on inventory availability, lead time, or cost considerations, as no technical differentiation exists between them for the specified application.

Frequently Asked Questions (FAQ)

Q: Can the FRN-R-25 be used as a direct replacement for the ECNR25?

A: Yes. The FRN-R-25 is electrically and mechanically equivalent to the ECNR25. Both parts have identical current ratings (25A), voltage ratings (250 VAC / 125 VDC), response characteristics (Slow Blow), fuse class (RK5), and physical dimensions (0.560" Dia x 2.000" L). They are interchangeable within the same fuse holder assembly.

Q: Are there any differences in breaking capacity between these parts?

A: The ECNR25 specifies 200kA breaking capacity at rated voltage. The FRN-R-25 specifies 200kA AC and 20kA DC. Both meet the minimum breaking capacity requirement for RK5 class fuses at the specified voltage ratings.

Q: Do both parts require the same holder assembly?

A: Yes. Both the ECNR25 and FRN-R-25 are cartridge fuses with identical physical dimensions (0.560" Dia x 2.000" L) and both require a compatible fuse holder. They are mechanically interchangeable.

Q: What regulatory certifications apply to both parts?

A: Both the ECNR25 and FRN-R-25 carry CE, CSA, and UL approvals, meeting the same regulatory requirements for electrical and industrial applications.

Q: Are there any RoHS compliance considerations?

A: Both parts are RoHS non-compliant with identical REACH status (REACH Unaffected). No compliance differentiation exists between them.