ATMR3 600V 3A CC Fuse - Equivalent & Substitute Parts

Part Overview

The ATMR3 is a 600V 3A CC fuse manufactured by Mersen USA Newburyport-MA L.L.C., currently in active product status with ROHS3 compliance. This cartridge fuse is designed for electrical and industrial applications requiring fast-blow response characteristics. Substitute parts are identified when equivalent electrical ratings and mechanical compatibility are maintained across the allowed parameter set.

Substiute Parts

ATMR3

Mersen USA Newburyport-MA L.L.C.In Stock: 763ATMR3 Datasheet

Current PartRFQ

0KLK003.T

Littelfuse Inc.In Stock: 11260KLK003.T Datasheet

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KLKR003.T

Littelfuse Inc.In Stock: 801KLKR003.T Datasheet

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KTK-R-3

Eaton - Bussmann Electrical DivisionIn Stock: 956KTK-R-3 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ATMR3 is determined by the following critical parameters:

• Current Rating: Must be 3A
• Voltage Rating - AC: Must be 600 VAC minimum
• Fuse Type: Must be Cartridge
• Response Time: Must be Fast Blow
• Class: Must be CC
• Product Status: Must be Active
• RoHS Compliance: Must be ROHS3 Compliant

Three substitute parts meet these criteria: 0KLK003.T (Littelfuse Inc.), KLKR003.T (Littelfuse Inc.), and KTK-R-3 (Eaton - Bussmann Electrical Division). All three maintain the required 3A current rating, 600 VAC AC voltage rating, cartridge fuse type, fast-blow response, CC class designation, and active product status with ROHS3 compliance.

Parameter Comparison

Engineering Selection Recommendations

All three substitute parts maintain active product status and ROHS3 compliance, meeting the core substitution criteria for the ATMR3. The 0KLK003.T and KLKR003.T are both Littelfuse POWR-GARD series cartridge fuses with identical AC voltage ratings and current ratings. The KTK-R-3 is an Eaton Limitron series cartridge fuse with equivalent electrical specifications. Selection among these substitutes should be based on packaging availability (Box versus Bulk), inventory requirements, and application-specific DC voltage considerations where applicable.

Frequently Asked Questions (FAQ)

Q: Can the 0KLK003.T substitute for the ATMR3? A: Yes. The 0KLK003.T maintains the required 3A current rating, 600 VAC voltage rating, cartridge fuse type, fast-blow response, and ROHS3 compliance. DC voltage rating of 500 VDC is provided as additional specification.

Q: What is the difference between KLKR003.T and 0KLK003.T? A: Both are Littelfuse cartridge fuses with 3A current and 600 VAC ratings. The primary difference is DC voltage rating: KLKR003.T is rated 300 VDC while 0KLK003.T is rated 500 VDC. KLKR003.T is packaged in Box format; 0KLK003.T is packaged in Bulk.

Q: Is the KTK-R-3 a direct equivalent? A: Yes. The KTK-R-3 meets all substitution criteria with 3A current rating, 600 VAC voltage rating, cartridge type, fast-blow response, CC class, and ROHS3 compliance. It is manufactured by Eaton - Bussmann Electrical Division.

Q: What packaging formats are available? A: ATMR3 is supplied in Box packaging. Substitute 0KLK003.T is supplied in Bulk; KLKR003.T is supplied in Box; KTK-R-3 is supplied in Bulk.

Q: Are all substitutes certified to the same standards? A: All three substitutes carry CE, CSA, and UL certifications. The 0KLK003.T additionally carries QPL approval.