NH00M160 Equivalent & Substitute Parts

Part Overview

The NH00M160 is a 160A square fuse rated for 500 VAC and 440 VDC operation, 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 substitute components essential for system maintenance and replacement scenarios.

Substiute Parts

NH00M160

Littelfuse Inc.In Stock: 985NH00M160 Datasheet

Current PartRFQ

160NHG00B

Eaton - Bussmann Electrical DivisionIn Stock: 1830160NHG00B Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the NH00M160 is determined by the following critical parameters:

• Current Rating: Must be 160A to maintain circuit protection characteristics
• Voltage Rating - AC: Must be 500 VAC minimum to ensure safe operation in AC circuits
• Fuse Class: Must be NH type to ensure mechanical and electrical compatibility with existing holders
• Fuse Type: Must be square configuration to fit standard NH holders
• Mounting Type: Must require holder mounting for installation compatibility
• Package / Case: Must be rectangular blade type for physical fit

The substitute part 160NHG00B meets these core substitution criteria. The DC voltage rating difference (250 VDC vs. 440 VDC) represents a reduction in maximum DC capability and must be evaluated against the specific application requirements.

Parameter Comparison

Engineering Selection Recommendations

The 160NHG00B from Eaton - Bussmann Electrical Division is a direct substitute for the obsolete NH00M160 based on matching current rating, AC voltage rating, fuse class, and physical form factor. Both components are VDE-approved and maintain the same 120kA AC breaking capacity.

The primary consideration for substitution is the reduced DC voltage rating of the 160NHG00B (250 VDC versus 440 VDC). This component is suitable for applications where the maximum DC voltage does not exceed 250 VDC. For applications requiring the full 440 VDC DC rating of the original part, alternative substitutes must be identified.

The 160NHG00B offers the advantage of active product status and RoHS compliance, making it preferable for new installations and systems requiring environmental compliance.

Frequently Asked Questions (FAQ)

Q: Can the 160NHG00B be used as a direct replacement for the NH00M160?

A: The 160NHG00B is mechanically and electrically compatible for AC applications and DC applications up to 250 VDC. The reduced DC voltage rating must be evaluated against your specific circuit requirements.

Q: What does the NH class designation mean?

A: NH is a standardized fuse class designation indicating a square-type industrial fuse with specific electrical and mechanical characteristics. Both the NH00M160 and 160NHG00B conform to this class standard.

Q: Are the physical dimensions identical between these two fuses?

A: Both fuses are rectangular blade type with the same length (54.00mm) and height (30.00mm). The 160NHG00B has a reduced width dimension (30.00mm vs. 56.40mm), which may affect holder compatibility depending on holder design specifications.

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

A: The 160NHG00B is RoHS compliant, meeting environmental restrictions on hazardous substances. The NH00M160 is non-compliant. For new system designs and installations subject to environmental regulations, the RoHS-compliant substitute is preferred.

Q: How do I determine if the DC voltage rating difference is acceptable for my application?

A: Evaluate the maximum DC voltage present in your circuit. If it does not exceed 250 VDC, the 160NHG00B is suitable. If your circuit operates above 250 VDC, alternative substitutes with higher DC ratings must be sourced.