CHM3D Equivalent & Substitute Parts Reference

Part Overview

The CHM3D is a three-circuit cartridge fuse holder manufactured by Eaton - Bussmann Electrical Division, designed for DIN rail mounting in industrial electrical distribution systems. This component is rated for 32 A at 690V and accommodates 5AG midget cartridge fuses (10mm x 38mm). The CHM3D is classified as obsolete, necessitating identification of active equivalent components for continued system maintenance and new installations.

Substiute Parts

CHM3D

Eaton - Bussmann Electrical DivisionIn Stock: 841CHM3D Datasheet

Current PartRFQ

CHM3DU

Eaton - Bussmann Electrical DivisionIn Stock: 842CHM3DU Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The CHM3DU is identified as a direct substitute for the CHM3D based on the following alignment criteria:

Mechanical Compatibility:

• Identical fuse size accommodation: 0.394" Dia x 1.496" L (10mm x 38mm)
• Identical mounting configuration: DIN Rail
• Identical circuit count: 3 circuits
• Identical fuse type: Cartridge

Electrical Compatibility:

• Same fuse holder category and function
• Compatible with 5AG midget cartridge fuses
• Screw terminal connection method (CHM3D specified; CHM3DU termination not specified in input)

Operational Differences:

• CHM3DU operates at 600V (versus CHM3D at 690V)
• CHM3DU rated for 30 A (versus CHM3D at 32 A)
• CHM3DU is Active status (versus CHM3D Obsolete)

The CHM3DU substitution is valid for applications where the lower voltage and current ratings are acceptable within system design parameters.

Parameter Comparison

Engineering Selection Recommendations

CHM3D Status: Obsolete. This component is no longer in active production and should be replaced in new designs and system upgrades.

CHM3DU Selection Criteria: The CHM3DU is an active equivalent component manufactured by the same supplier. Selection of the CHM3DU is appropriate when:

• System voltage rating is 600V or lower
• Circuit current requirements do not exceed 30 A
• DIN rail mounting and three-circuit configuration are required
• Compatibility with 5AG midget cartridge fuses is specified
• Screw terminal connection is acceptable

Compliance Status: Both components carry identical ECCN (EAR99) and HTSUS (8538.90.8180) classifications. The CHM3DU carries RoHS Compliant status, whereas the CHM3D status is not specified in the provided data.

Frequently Asked Questions (FAQ)

Q: Can the CHM3DU directly replace the CHM3D in all applications?

A: The CHM3DU is mechanically and functionally compatible with the CHM3D for DIN rail mounting and cartridge fuse accommodation. However, the CHM3DU operates at 600V maximum versus the CHM3D at 690V, and is rated for 30 A versus 32 A. Substitution is valid only when system voltage and current requirements fall within the CHM3DU specifications.

Q: What fuse types are compatible with both the CHM3D and CHM3DU?

A: Both holders accommodate 5AG midget cartridge fuses with dimensions 0.394" Dia x 1.496" L (10mm x 38mm).

Q: Are there differences in termination between the CHM3D and CHM3DU?

A: The CHM3D specifies screw terminal termination. The CHM3DU termination style is not specified in the provided technical data.

Q: What is the circuit count for both components?

A: Both the CHM3D and CHM3DU are three-circuit fuse holders.

Q: Is the CHM3DU RoHS compliant?

A: Yes, the CHM3DU is RoHS Compliant. The CHM3D RoHS status is not specified in the provided data.

Q: What is the current availability status of these components?

A: The CHM3D is obsolete with 791 pieces in stock. The CHM3DU is active with 781 pieces in stock.