Littelfuse 0NLS003.T Fuse Cartridge - Equivalent & Substitute Parts

Part Overview

The Littelfuse 0NLS003.T is a fast-blow cartridge fuse rated at 3A with dual voltage capability (600 VAC/600 VDC). This component is part of the POWR-GARD® NLS series and is designed for electrical and industrial applications requiring Class K5 protection. The part maintains active product status with 1036 units currently in stock. Substitute parts are identified when equivalent electrical and mechanical parameters align with the original specification, ensuring functional compatibility in the target application.

Substiute Parts

0NLS003.T

Littelfuse Inc.In Stock: 10990NLS003.T Datasheet

Current PartRFQ

NOS-3

Eaton - Bussmann Electrical DivisionIn Stock: 726NOS-3 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 0NLS003.T are identified based on the following critical parameters that determine functional equivalence:

• Current Rating: 3A
• Voltage Rating: 600 VAC / 600 VDC
• Fuse Type: Cartridge
• Response Time: Fast Blow
• Physical Dimensions: 0.811" Dia x 5.000" L
• Mounting Configuration: Requires Holder
• Regulatory Compliance: CE, CSA, UL certifications

The identified substitute, Eaton Bussmann NOS-3, shares the core electrical and mechanical characteristics necessary for direct replacement in applications designed for the 0NLS003.T.

Parameter Comparison

Engineering Selection Recommendations

Both the Littelfuse 0NLS003.T and Eaton Bussmann NOS-3 maintain active product status and carry equivalent regulatory certifications (CE, CSA, UL). Selection between these components should be based on:

• Availability and lead time requirements
• Existing inventory management practices
• Supplier qualification and procurement procedures
• Physical form factor compatibility with existing fuse holders

The Eaton Bussmann NOS-3 is qualified as a direct substitute when the 0NLS003.T is unavailable, provided the application circuit and fuse holder are designed for cartridge-type fuses with the specified dimensions and electrical ratings.

Frequently Asked Questions (FAQ)

Q: Can the Eaton Bussmann NOS-3 be used as a direct replacement for the Littelfuse 0NLS003.T?

A: Yes. Both components share identical current ratings (3A), voltage ratings (600 VAC/600 VDC), response characteristics (fast blow), and physical dimensions (0.811" Dia x 5.000" L). Both require a compatible fuse holder and carry equivalent regulatory approvals.

Q: What are the critical parameters for substitution compatibility?

A: Current rating, voltage rating (AC and DC), response time, physical dimensions, and mounting configuration must match. The 0NLS003.T and NOS-3 align on all these parameters.

Q: Are there any compliance differences between these parts?

A: Both components are RoHS compliant and carry CE, CSA, and UL certifications. The 0NLS003.T is ROHS3 compliant; the NOS-3 is RoHS compliant. Both are classified under the same HTSUS code (8536.10.0040).

Q: Does the fuse holder need to be changed when substituting?

A: No. Both the 0NLS003.T and NOS-3 are cartridge-type fuses with identical dimensions and mounting requirements. The same holder is compatible with both components.

Q: What is the breaking capacity difference, and does it affect substitution?

A: The 0NLS003.T specifies 50kA AC and 20kA DC breaking capacity. The NOS-3 specification does not provide breaking capacity data in the available documentation. Verify breaking capacity requirements for your specific application circuit before final selection.