ECSR25 Equivalent & Substitute Parts

Part Overview

The ECSR25 is a 25A 600VAC cartridge fuse manufactured by Eaton - Bussmann Electrical Division. This slow-blow fuse is designed for electrical and industrial applications requiring a cartridge-style holder mount. The part is currently active in production with 1116 units in stock. Substitute parts are identified to provide alternative sourcing options when the primary part is unavailable or when application requirements permit the use of functionally equivalent components.

Substiute Parts

ECSR25

Eaton - Bussmann Electrical DivisionIn Stock: 1145ECSR25 Datasheet

Current PartRFQ

FRS-R-25

Eaton - Bussmann Electrical DivisionIn Stock: 1094FRS-R-25 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ECSR25 is determined by the following critical parameters:

• Current Rating: 25A (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)
• Mounting Type: Requires Holder (exact match required)
• Approval Agency: CE, CSA, UL (substitute must maintain equivalent certifications)

The FRS-R-25 meets all critical substitution criteria. While this part offers additional DC voltage capability (300 VDC) and differs in physical length (3.00" vs 5.00"), these differences do not preclude substitution in AC-rated applications. The FRS-R-25 maintains identical current rating, AC voltage rating, fuse class, response time, and holder mounting requirement.

Parameter Comparison

Engineering Selection Recommendations

Both the ECSR25 and FRS-R-25 are active products from the same manufacturer with identical certifications (CE, CSA, UL) and equivalent electrical performance for AC applications. Selection between these parts should be based on the following factors:

The ECSR25 is RoHS Compliant, while the FRS-R-25 is RoHS non-compliant. Applications subject to RoHS requirements must use the ECSR25.

The FRS-R-25 provides dual-voltage capability (600 VAC / 300 VDC) and is suitable for applications requiring DC voltage protection in addition to AC protection. The ECSR25 is rated for AC only.

Physical length differs between the two parts (5.00" vs 3.00"). Holder compatibility must be verified based on the specific fuse holder model in use.

Frequently Asked Questions (FAQ)

Q: Can the FRS-R-25 be used as a direct replacement for the ECSR25?

A: The FRS-R-25 is electrically equivalent for 600 VAC applications and shares identical current rating, fuse class, response time, and holder mounting requirements. However, physical length differs (3.00" vs 5.00"), and RoHS compliance status differs. Verify holder compatibility and regulatory requirements before substitution.

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

A: The ECSR25 is RoHS Compliant, while the FRS-R-25 is RoHS non-compliant. Applications subject to RoHS directives or customer specifications requiring RoHS compliance must use the ECSR25.

Q: Why does the FRS-R-25 have a shorter length?

A: The FRS-R-25 is part of the Fusetron™ FRS-R series and is designed with a 3.00" length. The ECSR25 uses a 5.00" length. Both maintain the same 0.810" diameter. Fuse holder compatibility is specific to the holder model; verify that the holder accommodates the physical dimensions of the selected fuse.

Q: Are both parts suitable for industrial electrical applications?

A: Yes. Both the ECSR25 and FRS-R-25 are rated for electrical and industrial applications, carry equivalent certifications (CE, CSA, UL), and maintain a 200kA breaking capacity at rated voltage.

Q: What is the difference in voltage ratings between these parts?

A: The ECSR25 is rated for 600 VAC only. The FRS-R-25 is rated for 600 VAC and 300 VDC. For AC-only applications, both parts are equivalent. For applications requiring DC protection, only the FRS-R-25 is suitable.