CHM4DI Equivalent & Substitute Parts

Part Overview

The CHM4DI is a 4-circuit cartridge fuse holder designed for DIN rail mounting, rated for 32 A at 690V with 10mm x 38mm cartridge fuse compatibility. This component is classified as obsolete, making identification of functionally equivalent alternatives essential for system maintenance and component replacement in industrial electrical installations.

The need for substitute parts arises from the obsolete status of the CHM4DI, which may result in supply constraints or discontinuation. Identifying compatible alternatives ensures continuity in equipment repair and system upgrades while maintaining electrical safety and performance standards.

Substiute Parts

CHM4DI

Eaton - Bussmann Electrical DivisionIn Stock: 942CHM4DI Datasheet

Current PartRFQ

CHM4DIU

Eaton - Bussmann Electrical DivisionIn Stock: 845CHM4DIU Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CHM4DI is determined by the following critical parameters:

Mandatory Matching Parameters:

• Mounting type: DIN Rail
• Number of circuits: 4
• Fuse size: 10mm x 38mm (0.394" Dia x 1.496" L)
• Fuse type: Cartridge
• Termination style: Screw Terminal
• Series: CH

Allowable Variation Parameters:

• Current rating: May be lower than the original 32 A specification
• Voltage rating: May be lower than the original 690V specification
• Product status: Active status preferred for availability

The CHM4DIU qualifies as a substitute based on matching all mandatory parameters. The reduced current rating (30 A vs. 32 A) and voltage rating (600V vs. 690V) represent acceptable derating for applications not requiring the full original specifications.

Parameter Comparison

Engineering Selection Recommendations

The CHM4DIU is the designated substitute for the obsolete CHM4DI. Selection of this alternative is supported by the following factors:

Active Product Status: The CHM4DIU maintains active status within the Eaton - Bussmann product line, ensuring ongoing availability and supply chain reliability compared to the obsolete CHM4DI.

Regulatory Compliance: The CHM4DIU carries RoHS compliance certification, meeting current environmental and material restriction standards for electrical components in industrial applications.

Mechanical and Electrical Compatibility: Both components share identical mechanical form factors (DIN rail mounting, 10mm x 38mm cartridge fuse compatibility) and electrical architecture (4-circuit configuration, screw terminal termination). The reduced current and voltage ratings of the CHM4DIU represent conservative derating suitable for applications operating within 30 A and 600V specifications.

Functional Equivalence: The CHM4DIU performs the same protective and distribution function as the CHM4DI within its specified electrical parameters, making it suitable for direct replacement in compatible installations.

Frequently Asked Questions (FAQ)

Q: Can the CHM4DIU directly replace the CHM4DI in all applications?

A: Direct replacement is possible only in applications where the system operates at or below 30 A and 600V. Applications requiring the full 32 A at 690V specifications of the original CHM4DI require verification that the CHM4DIU derating is acceptable for the specific installation.

Q: Are the physical dimensions identical between CHM4DI and CHM4DIU?

A: Yes. Both components use identical 10mm x 38mm cartridge fuse dimensions and DIN rail mounting specifications, ensuring mechanical interchangeability.

Q: What is the significance of the RoHS compliance status of the CHM4DIU?

A: RoHS compliance indicates that the CHM4DIU meets restrictions on hazardous substances in electrical and electronic equipment, making it suitable for applications subject to environmental regulations. The CHM4DI status on this criterion is not specified in available documentation.

Q: Are both components compatible with the same 5AG cartridge fuses?

A: Yes. Both the CHM4DI and CHM4DIU are designed for use with 5AG, 13/32" x 1-1/2" (Midget) cartridge fuses, confirming fuse compatibility.

Q: What is the difference in packaging between these components?

A: The CHM4DI is supplied in standard packaging, while the CHM4DIU is supplied in bulk packaging. Packaging selection should be based on procurement quantity requirements and inventory management practices.