ECSR30 Equivalent & Substitute Parts Reference

Part Overview

The ECSR30 is a 30A 600VAC cartridge fuse manufactured by Eaton - Bussmann Electrical Division. This component is designed for electrical and industrial applications requiring slow-blow response characteristics and RK5 class protection. The part is currently active in production with 672 units in stock. Substitute parts are identified when equivalent electrical ratings, mechanical compatibility, and regulatory certifications align with the original specification, enabling direct replacement in holder-based installations.

Substiute Parts

ECSR30

Eaton - Bussmann Electrical DivisionIn Stock: 762ECSR30 Datasheet

Current PartRFQ

FRS-R-30

Eaton - Bussmann Electrical DivisionIn Stock: 1197FRS-R-30 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ECSR30 is determined by the following critical parameters:

• Current Rating: 30A (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)
• Approval Agency: CE, CSA, UL certifications (must be present)
• Breaking Capacity: 200kA minimum at rated voltage

The FRS-R-30 meets all substitution criteria. While this part includes additional DC voltage capability (300 VDC) and differs in physical length (3.00" vs 5.00"), these parameters do not preclude substitution in AC-rated applications. The FRS-R-30 maintains identical AC electrical ratings, response characteristics, class designation, and regulatory approvals.

Parameter Comparison

Engineering Selection Recommendations

Both the ECSR30 and FRS-R-30 are active products with identical AC electrical specifications and full regulatory compliance (CE, CSA, UL). Selection between these parts should be based on application requirements and holder compatibility. The ECSR30 is specified at 5.00" length, while the FRS-R-30 is 3.00" length. Verify holder dimensions before substitution to ensure mechanical fit. Both parts carry RoHS compliance and are suitable for electrical and industrial applications requiring 30A 600VAC protection with slow-blow characteristics.

Frequently Asked Questions (FAQ)

Q: Can FRS-R-30 replace ECSR30 in all applications?

A: FRS-R-30 is electrically equivalent for AC applications at 30A 600VAC with identical response time and class rating. Physical length differs (3.00" vs 5.00"), so holder compatibility must be verified before installation.

Q: What does RK5 class designation mean?

A: RK5 is a fuse class designation indicating specific current-limiting and breaking capacity characteristics. Both parts carry this identical classification, ensuring equivalent protection performance.

Q: Are both parts RoHS compliant?

A: Yes. Both ECSR30 and FRS-R-30 are RoHS compliant and carry identical regulatory approvals (CE, CSA, UL).

Q: Why does FRS-R-30 have a DC voltage rating when ECSR30 does not?

A: FRS-R-30 is rated for both 600 VAC and 300 VDC operation. This additional capability does not affect AC-only applications and does not preclude substitution in circuits specified for 600 VAC operation.

Q: What is the inventory status for these parts?

A: ECSR30 has 672 units in stock. FRS-R-30 has 1139 units in stock. Both are active products available for immediate procurement.