NH1CG160 Square Fuse 160A 500VAC/440VDC Equivalent & Substitute Parts

Part Overview

The NH1CG160 is a square fuse rated for 160A at 500VAC/440VDC, manufactured by Littelfuse Inc. This component is designed for motor protection applications and features fast-blow response characteristics with an indicating function. The part is classified as obsolete, making identification of suitable substitute components necessary for ongoing maintenance and replacement requirements in industrial electrical systems.

Substiute Parts

NH1CG160

Littelfuse Inc.In Stock: 868NH1CG160 Datasheet

Current PartRFQ

160NHG01B

Eaton - Bussmann Electrical DivisionIn Stock: 20115160NHG01B Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the NH1CG160 is determined by the following critical parameters:

• Current Rating: 160A (must match exactly)
• Voltage Rating - AC: 500VAC (must match exactly)
• Fuse Class: NH (must match exactly)
• Mounting Type: Requires Holder (must match exactly)
• Package / Case: Rectangular, Blade (must match exactly)

The substitute part 160NHG01B meets these core requirements. The DC voltage rating differs (250VDC versus 440VDC on the original), which represents a reduced DC capability. This substitution is valid where DC voltage requirements do not exceed 250VDC.

Parameter Comparison

Engineering Selection Recommendations

The 160NHG01B from Eaton - Bussmann Electrical Division is an active substitute for the obsolete NH1CG160. Both components share identical current and AC voltage ratings, NH class designation, and VDE approval. The substitute maintains the same breaking capacity at rated AC voltage (120kA) and identical mounting and package specifications.

The primary consideration is the reduced DC voltage rating of the substitute (250VDC versus 440VDC). Selection of the 160NHG01B is appropriate for applications where the maximum DC voltage does not exceed 250VDC. The substitute also offers improved RoHS compliance status, which may be advantageous for new installations or systems with environmental compliance requirements.

Frequently Asked Questions (FAQ)

Q: Can the 160NHG01B directly replace the NH1CG160 in all applications?

A: Direct replacement is valid where DC voltage requirements do not exceed 250VDC. If the original application requires 440VDC DC capability, the 160NHG01B is not suitable.

Q: Are there dimensional differences between these fuses?

A: Yes. The NH1CG160 measures 75.00mm L x 56.40mm W x 30.00mm H, while the 160NHG01B measures 75.00mm L x 30.00mm W x 50.00mm H. Length remains identical, but width and height differ. Verify that the fuse holder accommodates the substitute dimensions before installation.

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

A: The 160NHG01B is RoHS compliant, while the NH1CG160 is not. For new system designs or installations subject to RoHS regulations, the substitute offers compliance advantage. Existing systems using the original part are not affected by this difference.

Q: Do both fuses have the same breaking capacity?

A: Both fuses provide 120kA breaking capacity at rated AC voltage. The original part specifies 25kA DC breaking capacity; the substitute specification does not differentiate DC breaking capacity.

Q: Is the fast-blow response time maintained with the substitute?

A: The response time specification for the 160NHG01B is not provided in the available data. Verify response time characteristics with the manufacturer if fast-blow operation is critical to the application.