FRS-R-15 Equivalent & Substitute Parts

Part Overview

The FRS-R-15 is a 15A cartridge fuse manufactured by Eaton - Bussmann Electrical Division, rated for 600 VAC and 300 VDC operation. This slow-blow fuse is designed for electrical and industrial applications requiring RK5 class protection with a breaking capacity of 200kA AC and 20kA DC. The part is actively produced and stocked, with 967 units available. Substitute parts are identified when equivalent electrical ratings, mechanical dimensions, and safety certifications align with the original specification, enabling component interchangeability in applications where the original part becomes unavailable or when alternative sourcing is required.

Substiute Parts

FRS-R-15

Eaton - Bussmann Electrical DivisionIn Stock: 984FRS-R-15 Datasheet

Current PartRFQ

FLSR015.TXID

Littelfuse Inc.In Stock: 883FLSR015.TXID Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the FRS-R-15 is determined by strict alignment of the following electrical and mechanical parameters:

• Current Rating: 15A (exact match required)
• Voltage Rating: 600 VAC / 300 VDC (exact match required)
• Response Time: Slow Blow (exact match required)
• Fuse Class: RK5 (exact match required)
• Breaking Capacity: 200kA AC / 20kA DC (exact match required)
• Mounting Type: Requires Holder (exact match required)
• Package Type: Cartridge, Non-Standard (exact match required)
• Approval Agencies: Minimum CE, CSA, UL certification required

The FLSR015.TXID from Littelfuse Inc. meets all electrical substitution criteria. Physical dimension variance (0.811" Dia x 5.000" L vs. 0.810" Dia x 3.00" L) requires verification of holder compatibility before deployment in space-constrained applications.

Parameter Comparison

Engineering Selection Recommendations

The FLSR015.TXID is electrically and functionally equivalent to the FRS-R-15 across all critical parameters: current rating, voltage ratings, response time, fuse class, and breaking capacity. Both parts maintain active product status and hold required safety certifications (CE, CSA, UL). The FLSR015.TXID carries additional QPL certification and ROHS3 compliance, meeting or exceeding the original specification.

Physical dimension variance in length (5.000" vs. 3.00") requires confirmation that the substitute part fits within the existing fuse holder assembly. Diameter tolerance (0.811" vs. 0.810") is within typical mechanical tolerances for cartridge fuse holders. Selection between these parts should be based on holder compatibility and availability requirements.

Frequently Asked Questions (FAQ)

Q: Can FLSR015.TXID be used as a direct replacement for FRS-R-15?

A: Electrical substitution is valid. The FLSR015.TXID matches all electrical specifications, current rating, voltage ratings, response time, and breaking capacity. Physical dimension verification is required to confirm compatibility with the existing fuse holder, particularly the increased length (5.000" vs. 3.00").

Q: What is the significance of the RK5 fuse class?

A: RK5 is a specific fuse class designation that defines the fuse's performance characteristics, including breaking capacity and response time. Both the FRS-R-15 and FLSR015.TXID are RK5 class fuses, ensuring equivalent protective performance in the circuit.

Q: Does the FLSR015.TXID have additional certifications?

A: Yes. The FLSR015.TXID includes QPL (Qualified Products List) certification in addition to CE, CSA, and UL certifications. Both parts are REACH Unaffected and RoHS compliant, meeting environmental and regulatory requirements.

Q: Why is the physical dimension different if these are substitutes?

A: Cartridge fuse design allows for length variation while maintaining the same diameter and electrical performance. The FLSR015.TXID's increased length does not affect electrical function but requires confirmation that the fuse holder accommodates the longer cartridge.

Q: Are there any packaging differences?

A: The FRS-R-15 is supplied in Bulk packaging (967 units in stock), while the FLSR015.TXID is supplied in Box packaging (834 units in stock). Packaging format does not affect component performance or substitution eligibility.