ECNR15 Equivalent & Substitute Parts Reference

Part Overview

The ECNR15 is a 15A 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 1048 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 fuse holder assemblies.

Substiute Parts

ECNR15

Eaton - Bussmann Electrical DivisionIn Stock: 1143ECNR15 Datasheet

Current PartRFQ

FRN-R-15

Eaton - Bussmann Electrical DivisionIn Stock: 1169FRN-R-15 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ECNR15 is determined by strict equivalence across the following critical parameters:

• Current Rating: Must be 15A
• Voltage Ratings: Must support 250 VAC and 125 VDC minimum
• Response Time: Must be Slow Blow classification
• Fuse Class: Must be RK5
• Physical Dimensions: Must be 0.560" Dia x 2.000" L to fit existing holders
• Approval Certifications: Must include CE, CSA, and UL

The FRN-R-15 meets all electrical and mechanical substitution criteria. Both parts share identical current ratings, voltage specifications, response characteristics, and physical form factors. Both are approved by the same certification bodies and belong to the same fuse class.

Parameter Comparison

Engineering Selection Recommendations

Both the ECNR15 and FRN-R-15 are active production parts from the same manufacturer with full certification compliance (CE, CSA, UL). Selection between these parts should be based on availability and application-specific compliance requirements.

The ECNR15 carries RoHS Compliant status, while the FRN-R-15 is RoHS non-compliant. For applications subject to RoHS directives, the ECNR15 is the appropriate selection. For applications without RoHS requirements, either part is electrically and mechanically equivalent.

Both parts are rated for identical electrical performance in 250 VAC / 125 VDC circuits with 15A slow-blow protection. The physical form factor is identical, ensuring compatibility with standard cartridge fuse holders designed for 0.560" diameter x 2.000" length cartridges.

Frequently Asked Questions (FAQ)

Q: Can FRN-R-15 be used as a direct replacement for ECNR15?

A: Yes. Both parts are electrically and mechanically equivalent with identical current ratings (15A), voltage specifications (250 VAC / 125 VDC), response time (Slow Blow), fuse class (RK5), and physical dimensions (0.560" Dia x 2.000" L). Both hold CE, CSA, and UL certifications. Direct substitution is valid from an electrical and mechanical standpoint.

Q: What is the difference between ECNR15 and FRN-R-15?

A: The primary difference is RoHS compliance status. ECNR15 is RoHS Compliant; FRN-R-15 is RoHS non-compliant. Both parts are manufactured by Eaton - Bussmann Electrical Division and share identical electrical ratings and physical dimensions. Selection depends on regulatory requirements for your application.

Q: Will these fuses fit my existing fuse holder?

A: Yes, provided your holder is designed for standard cartridge fuses with 0.560" diameter and 2.000" length dimensions. Both ECNR15 and FRN-R-15 conform to this standard form factor and require a compatible holder for installation.

Q: Are both parts currently available?

A: Yes. ECNR15 has 1048 units in stock; FRN-R-15 has 1114 units in stock. Both are active production parts.

Q: What does "Slow Blow" mean for these fuses?

A: Slow Blow (also called time-delay) fuses tolerate temporary inrush currents without opening, responding only to sustained overcurrent conditions. This characteristic is essential for circuits with inductive loads or motor startup transients.

Q: Can I use a different current rating if my circuit requires it?

A: No. Fuse current ratings must match the circuit protection requirement exactly. Using a higher-rated fuse creates fire and equipment damage risk; using a lower-rated fuse causes nuisance trips. Only 15A-rated fuses are appropriate for circuits designed for ECNR15 or FRN-R-15 protection.