NOS-20 Equivalent & Substitute Parts

Part Overview

The NOS-20 is a one-time fuse manufactured by Eaton - Bussmann Electrical Division, currently in active product status with RoHS compliance. This component is designed for electrical protection applications requiring single-use operation. Equivalent and substitute parts are identified based on matching electrical ratings, mechanical compatibility, and functional performance characteristics to ensure proper circuit protection functionality.

Substiute Parts

NOS-20

Eaton - Bussmann Electrical DivisionIn Stock: 1039NOS-20 Datasheet

Current PartRFQ

0NLS020.T

Littelfuse Inc.In Stock: 8150NLS020.T Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the NOS-20 is based on the following critical parameters:

• Current Rating: 20A
• Voltage Rating: 600 VAC / 500 VDC
• Fuse Type: Cartridge configuration
• Response Time: Fast Blow
• Regulatory Compliance: RoHS compliance and international certifications (CE, CSA, UL)
• Mechanical Compatibility: Physical dimensions and holder requirements

The identified substitute part maintains electrical equivalence through matching current and voltage ratings, ensuring proper protective function in the target circuit. Both parts operate within the same electrical specifications and regulatory framework.

Parameter Comparison

Engineering Selection Recommendations

Both the NOS-20 and 0NLS020.T maintain active product status with current manufacturer support. The 0NLS020.T (Littelfuse POWR-GARD® NLS series) provides documented electrical specifications including 20A current rating, 600 VAC / 500 VDC voltage ratings, and international certifications (CE, CSA, UL). Both components comply with RoHS requirements and share identical ECCN and HTSUS classifications, confirming regulatory equivalence for import and export purposes.

Selection between these parts should be based on application-specific requirements including holder compatibility, physical space constraints, and established supplier relationships. Both components are suitable for electrical and industrial applications requiring 20A protection at the specified voltage levels.

Frequently Asked Questions (FAQ)

Q: What are the primary electrical parameters that determine substitution compatibility?

A: The critical parameters are current rating (20A), voltage ratings (600 VAC / 500 VDC), and fuse type (cartridge configuration). Both the NOS-20 and 0NLS020.T meet these specifications.

Q: Are there mechanical compatibility considerations between these parts?

A: Yes. The 0NLS020.T requires a holder for installation and has specified dimensions of 0.811" diameter by 5.000" length. Verify that your application's fuse holder accommodates these dimensions before substitution.

Q: Do both parts meet the same regulatory requirements?

A: Both parts are RoHS compliant and share the same ECCN (EAR99) and HTSUS code (8536.10.0040). The 0NLS020.T carries additional international certifications (CE, CSA, UL).

Q: What is the difference between "one time" and "cartridge" fuse types?

A: Both are single-use fuses that operate once and require replacement. The cartridge designation refers to the physical form factor and holder requirement, while "one time" describes the operational characteristic.

Q: Can I use the 0NLS020.T as a direct replacement in all applications?

A: Verify holder compatibility and physical space availability. The 0NLS020.T's cartridge form factor and specified dimensions must fit your existing fuse holder assembly.