ECNR35 Equivalent & Substitute Parts

Part Overview

The ECNR35 is a 35A 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 certification. Substitute parts are identified to provide alternative sourcing options when the primary part number is unavailable or when inventory requirements necessitate alternative suppliers or series selections.

Substiute Parts

ECNR35

Eaton - Bussmann Electrical DivisionIn Stock: 791ECNR35 Datasheet

Current PartRFQ

FRN-R-35

Eaton - Bussmann Electrical DivisionIn Stock: 899FRN-R-35 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ECNR35 is determined by strict equivalence across the following critical parameters:

• Current Rating: 35A (exact match required)
• Voltage Rating: 250 VAC / 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: 0.810" Dia x 3.00" L (exact match required)
• Mounting Configuration: Requires Holder (exact match required)

The FRN-R-35 meets all substitution criteria as it maintains identical electrical ratings, fuse classification, response characteristics, and physical form factor. Both parts are manufactured by Eaton - Bussmann Electrical Division and carry equivalent international approvals.

Parameter Comparison

Engineering Selection Recommendations

Both ECNR35 and FRN-R-35 are functionally equivalent for applications requiring 35A cartridge fuse protection at 250 VAC / 125 VDC with RK5 classification. Selection between these parts should be based on the following criteria:

ECNR35 is the preferred selection for applications subject to RoHS compliance requirements, as this part number carries RoHS Compliant certification.

FRN-R-35 (Fusetron™ FRN-R series) is suitable for applications where RoHS compliance is not mandated. This part maintains identical electrical performance and international approvals (CE, CSA, UL).

Both parts are manufactured by the same supplier and carry equivalent safety certifications. Inventory availability should be considered as a secondary factor, with 738 pcs available for ECNR35 and 864 pcs available for FRN-R-35.

Frequently Asked Questions (FAQ)

Q: Can FRN-R-35 be used as a direct replacement for ECNR35?

A: Yes. Both parts share identical current ratings (35A), voltage ratings (250 VAC / 125 VDC), fuse class (RK5), response time (Slow Blow), physical dimensions (0.810" Dia x 3.00" L), and mounting requirements. The primary difference is RoHS compliance status.

Q: What is the significance of the RoHS compliance difference?

A: ECNR35 is RoHS Compliant, while FRN-R-35 is RoHS non-compliant. Selection depends on whether the application or end-use market requires RoHS certification. Both parts meet CE, CSA, and UL approvals.

Q: Are the breaking capacities identical?

A: Both parts specify 200kA breaking capacity at rated voltage. FRN-R-35 provides additional specification detail (200kA AC, 20kA DC), while ECNR35 lists 200kA without AC/DC breakdown.

Q: Do these fuses require a specific holder?

A: Both ECNR35 and FRN-R-35 require a cartridge fuse holder. The physical dimensions (0.810" Dia x 3.00" L) are identical, ensuring compatibility with the same holder assemblies.

Q: Which part should be selected for new designs?

A: For new designs subject to RoHS requirements, specify ECNR35. For applications without RoHS mandates, either part is acceptable based on availability and cost considerations.