NH00CG32 Equivalent & Substitute Parts

Part Overview

The NH00CG32 is a 32A square fuse rated for 500 VAC and 440 VDC operation, manufactured by Littelfuse Inc. This component is classified as obsolete, indicating discontinuation from the manufacturer. The fast-blow response time and indicating feature make it suitable for motor protection applications. Due to its obsolete status, identifying equivalent substitute parts is necessary to maintain system functionality and ensure continued availability for replacement or new installations.

Substiute Parts

NH00CG32

Littelfuse Inc.In Stock: 1159NH00CG32 Datasheet

Current PartRFQ

170M1562D

Eaton - Bussmann Electrical DivisionIn Stock: 889170M1562D Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The 170M1562D from Eaton - Bussmann Electrical Division qualifies as a substitute based on the following critical parameters:

Matching Parameters:

• Current Rating: 32A (identical)
• Fuse Type: Square (identical)
• Mounting Type: Requires Holder (identical)
• Package / Case: Rectangular, Blade (identical)
• Response Time: Fast Blow capability (functional equivalence)
• Indicating Feature: Present (identical)

Differing Parameters:

• Voltage Rating - AC: 170M1562D rated for 690 VAC (exceeds NH00CG32 requirement of 500 VAC)
• Voltage Rating - DC: 170M1562D has no DC rating specified (NH00CG32 rated for 440 VDC)
• Breaking Capacity: 170M1562D rated for 200kA (exceeds NH00CG32 specification of 120kA AC)
• Class: 170M1562D class not specified (NH00CG32 is Class NH)

The 170M1562D maintains the same current-carrying capacity, form factor, and mechanical interface, making it suitable for applications where the higher voltage rating and breaking capacity do not present constraints.

Parameter Comparison

Engineering Selection Recommendations

The 170M1562D is an active product with current manufacturer support, whereas the NH00CG32 is obsolete. The substitute part carries CE, CSA, and UR certifications, providing broader regulatory acceptance compared to the VDE approval of the original part. The 170M1562D achieves RoHS compliance, addressing environmental and regulatory requirements that may be mandated in new designs or system upgrades.

The higher AC voltage rating (690 VAC) of the 170M1562D provides operational margin in systems operating at or below 500 VAC. The increased breaking capacity (200kA) offers enhanced protection capability. However, the absence of a specified DC voltage rating for the 170M1562D requires evaluation against system DC requirements. Dimensional differences exist between the two parts; physical fit within the fuse holder assembly must be confirmed before implementation.

Frequently Asked Questions (FAQ)

Q: Can the 170M1562D directly replace the NH00CG32 in all applications?

A: The 170M1562D matches the current rating, fuse type, and mechanical interface of the NH00CG32. However, substitution suitability depends on system voltage requirements. The 170M1562D is rated for 690 VAC, which covers 500 VAC applications. If the system requires DC operation at 440 VDC, the absence of a specified DC rating for the 170M1562D must be evaluated against application requirements.

Q: What are the dimensional differences between these parts?

A: The NH00CG32 measures 2.126" L x 2.020" W x 0.787" H (54.00mm x 51.30mm x 20.00mm). The 170M1562D measures 2.087" L x 0.807" W x 2.047" H (53.00mm x 20.50mm x 52.00mm). Physical verification of fit within the existing fuse holder is required before substitution.

Q: What certifications does the 170M1562D carry?

A: The 170M1562D holds CE, CSA, and UR approvals. The original NH00CG32 carries VDE approval. The broader certification portfolio of the substitute part may provide advantages in systems requiring multiple regulatory compliance standards.

Q: Is the 170M1562D RoHS compliant?

A: Yes, the 170M1562D is RoHS compliant. The NH00CG32 is RoHS non-compliant. This distinction is relevant for new designs or system upgrades subject to environmental regulations.

Q: What is the breaking capacity difference?

A: The NH00CG32 has a breaking capacity of 120kA AC and 25kA DC. The 170M1562D is rated for 200kA. The higher breaking capacity of the substitute part provides increased fault protection capability.