ECSR150 Equivalent & Substitute Parts Reference

Part Overview

The ECSR150 is a 150A 600VAC cylindrical fuse cartridge manufactured by Eaton - Bussmann Electrical Division. This slow-blow cartridge fuse is designed for electrical and industrial applications requiring RK5 class protection. The part is currently active in production with 1,124 units in stock. Substitute parts are identified when equivalent electrical and mechanical parameters align with the main part's specifications, enabling direct replacement in compatible holder assemblies.

Substiute Parts

ECSR150

Eaton - Bussmann Electrical DivisionIn Stock: 1230ECSR150 Datasheet

Current PartRFQ

FRS-R-150

Eaton - Bussmann Electrical DivisionIn Stock: 806FRS-R-150 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ECSR150 is determined by strict alignment of the following critical parameters:

• Current Rating: 150A (exact match required)
• Voltage Rating - AC: 600 VAC (exact match required)
• Fuse Type: Cartridge (exact match required)
• Response Time: Slow Blow (exact match required)
• Class: RK5 (exact match required)
• Physical Dimensions: 1.610" Dia x 9.630" L (exact match required)
• Mounting Interface: Requires Holder (exact match required)

The FRS-R-150 meets all substitution criteria. While this part includes additional DC voltage rating (300 VDC) and modified breaking capacity specifications for DC operation, its AC electrical characteristics, mechanical form factor, and holder compatibility remain identical to the ECSR150.

Parameter Comparison

Engineering Selection Recommendations

Both the ECSR150 and FRS-R-150 are active production parts from Eaton - Bussmann Electrical Division with identical AC electrical ratings, mechanical dimensions, and holder compatibility. Both parts carry CE, CSA, and UL approvals and maintain RoHS compliance. Selection between these parts depends on application requirements:

For AC-only applications at 600 VAC, 150A, either part is suitable. The FRS-R-150 provides extended functionality through DC voltage rating and DC breaking capacity specifications, making it applicable to dual-voltage systems without requiring a separate part number. Both parts are immediately available in production inventory.

Frequently Asked Questions (FAQ)

Q: Can the FRS-R-150 directly replace the ECSR150 in existing installations?

A: Yes. Both parts share identical AC electrical ratings (150A, 600 VAC), response time (Slow Blow), RK5 class designation, physical dimensions (1.610" Dia x 9.630" L), and holder mounting interface. Direct mechanical and electrical substitution is valid for AC applications.

Q: What is the difference between the ECSR150 and FRS-R-150?

A: The primary difference is the FRS-R-150 includes DC voltage rating (300 VDC) and DC breaking capacity (20kA DC) in addition to AC specifications. AC electrical characteristics and mechanical form factor are identical.

Q: Are both parts RoHS compliant?

A: Yes. Both the ECSR150 and FRS-R-150 are RoHS compliant and carry identical regulatory approvals (CE, CSA, UL).

Q: Do these parts require a specific holder assembly?

A: Yes. Both parts are cartridge fuses that require a compatible holder assembly for installation. Verify holder compatibility with the 1.610" diameter and 9.630" length specifications.

Q: What is the breaking capacity of these fuses?

A: The ECSR150 has a breaking capacity of 200kA at rated voltage (600 VAC). The FRS-R-150 maintains 200kA AC breaking capacity and adds 20kA DC breaking capacity.