NH1CG100 Equivalent & Substitute Parts

Part Overview

The NH1CG100 is a square fuse rated for 100A at 500 VAC / 440 VDC, manufactured by Littelfuse Inc. and classified as NH type. This component is designed for motor protection applications and features fast-blow response with an indicating function. The part is currently listed as obsolete, making identification of compatible substitutes necessary for system maintenance and component replacement in existing installations.

Substiute Parts

NH1CG100

Littelfuse Inc.In Stock: 1013NH1CG100 Datasheet

Current PartRFQ

100NHG01B

Eaton - Bussmann Electrical DivisionIn Stock: 1175100NHG01B Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the NH1CG100 is determined by the following critical parameters:

• Current Rating: 100A (must match exactly)
• Voltage Rating - AC: 500 VAC (must match exactly)
• Fuse Type: Square (must match exactly)
• Class: NH (must match exactly)
• Mounting Type: Requires Holder (must match exactly)
• Package / Case: Rectangular, Blade (must match exactly)

The substitute part 100NHG01B meets all mandatory electrical and mechanical compatibility criteria. The primary difference is the DC voltage rating, where the substitute is rated for 250 VDC compared to the original 440 VDC specification. This difference must be evaluated against the specific application requirements.

Parameter Comparison

Engineering Selection Recommendations

The 100NHG01B is an active product from Eaton - Bussmann Electrical Division and represents the primary substitute for the obsolete NH1CG100. Both components share identical current rating, AC voltage rating, fuse class, and mechanical form factor.

The 100NHG01B offers improved product status (active vs. obsolete) and ROHS3 compliance, providing advantages for new system designs and regulatory adherence. The DC voltage rating difference (250 VDC vs. 440 VDC) requires application-specific evaluation to determine suitability for existing installations.

Frequently Asked Questions (FAQ)

Q: Can the 100NHG01B directly replace the NH1CG100 in all applications?

A: The 100NHG01B matches all critical electrical and mechanical parameters except DC voltage rating. Substitution is valid for applications where the system DC voltage does not exceed 250 VDC. Applications requiring 440 VDC DC rating require alternative evaluation.

Q: What are the key compatibility criteria for NH1CG100 substitutes?

A: Substitutes must maintain 100A current rating, 500 VAC AC voltage rating, NH class designation, square fuse type, and rectangular blade package configuration. These parameters define the mechanical and electrical interchangeability within the fuse holder.

Q: Why is the 100NHG01B considered a substitute despite the DC voltage difference?

A: The 100NHG01B meets all mandatory mechanical and primary electrical specifications. The DC voltage rating difference is a parameter variance that must be evaluated against specific application requirements rather than a disqualifying factor for substitution eligibility.

Q: What is the significance of the product status change from obsolete to active?

A: Active product status ensures continued availability, technical support, and manufacturing consistency. The 100NHG01B provides supply chain reliability advantages over the obsolete NH1CG100 for replacement and maintenance scenarios.

Q: Are there dimensional differences between these components?

A: Yes. The NH1CG100 measures 2.953" L x 2.220" W x 1.181" H, while the 100NHG01B measures 2.953" L x 2.047" W x 2.165" H. Both fit the rectangular blade package category and NH class holder, but dimensional variance should be confirmed for space-constrained installations.