NH00CG6 Equivalent & Substitute Parts

Part Overview

The NH00CG6 is a square fuse rated for 6A at 500 VAC / 440 VDC, manufactured by Littelfuse Inc. and classified as NH type with fast-blow response characteristics. This component is designated as obsolete product status. Identifying equivalent and substitute parts is necessary due to the obsolete classification, which may impact long-term availability and procurement reliability for applications requiring motor protection and electrical circuit safeguarding.

Substiute Parts

NH00CG6

Littelfuse Inc.In Stock: 819NH00CG6 Datasheet

Current PartRFQ

6NHG000B

Eaton - Bussmann Electrical DivisionIn Stock: 10346NHG000B Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the NH00CG6 is based on the following critical parameters that must remain consistent:

• Current Rating: 6A (exact match required)
• Voltage Rating - AC: 500 VAC (exact match required)
• Fuse Type: Square (exact match required)
• Class: NH (exact match required)
• Response Time: Fast Blow (exact match required)
• Mounting Type: Requires Holder (exact match required)
• Approval Agency: VDE (exact match required)

The substitute part 6NHG000B meets all these core criteria. The DC voltage rating differs (250 VDC vs. 440 VDC on the original), which represents a reduced DC voltage capability. This difference must be evaluated against the specific application requirements.

Parameter Comparison

Engineering Selection Recommendations

The 6NHG000B from Eaton - Bussmann Electrical Division is an active product with current manufacturing status, providing supply chain continuity for the obsolete NH00CG6. Both parts carry VDE approval and maintain identical AC voltage ratings, current ratings, and fuse class specifications.

The 6NHG000B offers RoHS compliance, whereas the NH00CG6 is non-compliant. This distinction is relevant for applications subject to RoHS regulatory requirements.

The primary technical difference is the DC voltage rating: the substitute part is rated for 250 VDC compared to the original 440 VDC. Applications operating at DC voltages exceeding 250 VDC require evaluation to determine if this reduced rating is acceptable for the intended circuit protection function.

Frequently Asked Questions (FAQ)

Q: Can the 6NHG000B directly replace the NH00CG6 in all applications?

A: Direct replacement is possible for applications where the DC voltage does not exceed 250 VDC. For circuits operating at higher DC voltages, the reduced DC rating of the substitute part must be evaluated against circuit requirements.

Q: What are the physical dimension differences between these parts?

A: Both parts are square fuses requiring a holder. The NH00CG6 measures 2.126" L x 2.020" W x 0.787" H (54.00mm x 51.30mm x 20.00mm). The 6NHG000B measures 2.126" L x 0.827" W x 1.693" H (54.00mm x 21.00mm x 43.00mm). Length is identical; width and height differ. Holder compatibility must be verified for the specific application.

Q: Are both parts VDE approved?

A: Yes, both the NH00CG6 and 6NHG000B carry VDE approval, meeting the same regulatory certification standard.

Q: What is the significance of the RoHS compliance difference?

A: The 6NHG000B is RoHS compliant, while the NH00CG6 is not. For applications or markets with RoHS regulatory requirements, the substitute part provides compliance alignment.

Q: Do both parts have the same breaking capacity?

A: The NH00CG6 specifies 120kA AC and 25kA DC breaking capacity. The 6NHG000B specifies 120kA breaking capacity. The DC breaking capacity specification for the substitute part should be confirmed with the manufacturer for applications requiring this parameter.