Equivalent & Substitute Parts for A6T10

Part Overview

The A6T10 is a Class T fast-acting fuse manufactured by Mersen USA Newburyport-MA L.L.C. with a 200kA breaking capacity. This component is designed for electrical and industrial applications requiring reliable overcurrent protection. The part is currently active in production and available in box packaging with 699 units in stock. Due to supply chain considerations, manufacturing transitions, or application-specific requirements, equivalent substitute parts may be necessary to maintain system continuity.

Substiute Parts

A6T10

Mersen USA Newburyport-MA L.L.C.In Stock: 754A6T10 Datasheet

Current PartRFQ

JJS-10

Eaton - Bussmann Electrical DivisionIn Stock: 951JJS-10 Datasheet

SimilarRFQ

JLLS010.T

Littelfuse Inc.In Stock: 1213JLLS010.T Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the A6T10 is determined by the following critical parameters:

• Fuse Class: T (Time-delay fuse classification)
• Response Time: Fast Acting
• Breaking Capacity: 200kA minimum at rated voltage
• Mounting Type: Cartridge format requiring holder
• Current Rating: 10A
• Voltage Rating: 600 VAC minimum
• Approval Agencies: CE, CSA, UL certifications

The substitute parts JJS-10 and JLLS010.T meet these core electrical and mechanical requirements, enabling direct functional replacement in applications where the A6T10 is specified.

Parameter Comparison

Engineering Selection Recommendations

All three parts maintain active product status and share identical electrical ratings for AC voltage (600 VAC) and current (10A). The JJS-10 (Eaton - Bussmann Limitron™ JJS series) and JLLS010.T (Littelfuse POWR-GARD® JLLS series) are both certified alternatives with 200kA breaking capacity matching the A6T10 specification.

The JLLS010.T provides additional DC voltage capability (300 VDC), making it suitable for applications requiring dual AC/DC operation. The JJS-10 maintains AC-only operation consistent with the A6T10 baseline specification.

RoHS compliance differs between options: the A6T10 is RoHS non-compliant, while both JJS-10 and JLLS010.T are RoHS compliant. Selection should account for end-application regulatory requirements.

Physical dimensions vary slightly: JJS-10 measures 0.560" Dia × 1.500" W (14.22mm × 38.10mm), while JLLS010.T measures 0.563" Dia × 1.500" L (14.30mm × 38.10mm). Both fit standard cartridge holders designed for Class T fuses.

Frequently Asked Questions (FAQ)

Q: Can JJS-10 and JLLS010.T be used interchangeably with A6T10?

A: Yes, both substitute parts meet the core electrical requirements: Class T classification, 10A current rating, 600 VAC voltage rating, 200kA breaking capacity, and fast-acting response. Physical dimensions are compatible with standard cartridge holders. Selection between them depends on DC voltage requirements and RoHS compliance mandates for your application.

Q: What is the difference between JJS-10 and JLLS010.T?

A: The primary difference is DC voltage capability. JLLS010.T supports 300 VDC operation, while JJS-10 is rated for AC only. Both maintain identical AC specifications (600 VAC, 10A, 200kA breaking capacity, Class T). JLLS010.T is manufactured by Littelfuse; JJS-10 is manufactured by Eaton - Bussmann.

Q: Are there packaging differences between these parts?

A: Yes. A6T10 is supplied in box packaging (699 units in stock). JJS-10 is supplied in bulk packaging (880 units in stock). JLLS010.T is supplied in box packaging (1143 units in stock). Packaging format does not affect electrical or mechanical compatibility.

Q: Do all three parts have the same approval certifications?

A: A6T10 and JJS-10 both carry CE, CSA, and UL certifications. JLLS010.T carries CE, CSA, and UR certifications. All three meet major industrial approval standards for Class T fuse applications.

Q: Which substitute should I select for RoHS-compliant applications?

A: Both JJS-10 and JLLS010.T are RoHS compliant. A6T10 is RoHS non-compliant. If RoHS compliance is required, either substitute is acceptable based on your DC voltage requirements.