CHM4D Equivalent & Substitute Parts

Part Overview

The CHM4D is a 4-circuit cartridge fuse holder designed for DIN rail mounting, rated for 32 A at 690V with screw terminal connections. This component is classified as obsolete, making identification of compatible alternatives essential for system maintenance and component replacement in existing installations.

The CHM4D accommodates 5AG cartridge fuses (10mm x 38mm) and is suitable for applications requiring multi-circuit protection in industrial control systems. Due to its obsolete status, equivalent parts with compatible electrical and mechanical specifications are necessary for procurement and field replacement scenarios.

Substiute Parts

CHM4D

Eaton - Bussmann Electrical DivisionIn Stock: 1176CHM4D Datasheet

Current PartRFQ

CHM4DU

Eaton - Bussmann Electrical DivisionIn Stock: 804CHM4DU Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CHM4D is determined by the following critical parameters:

• Mounting type: DIN Rail
• Number of circuits: 4
• Fuse type: Cartridge
• Fuse size: 10mm x 38mm (5AG)
• Termination style: Screw Terminal
• Series compatibility: CH series

The CHM4DU is identified as a direct substitute. While the CHM4DU operates at a lower voltage rating (600V versus 690V) and reduced current capacity (30 A versus 32 A), it maintains identical mechanical compatibility, circuit configuration, and fuse accommodation specifications. The voltage and current differences represent a downrating in electrical performance rather than a functional incompatibility.

Parameter Comparison

Engineering Selection Recommendations

The CHM4D is obsolete and no longer in active production. The CHM4DU is the identified equivalent from the same manufacturer and series, with active product status ensuring ongoing availability and support.

Selection of the CHM4DU requires verification that the application voltage does not exceed 600V and that the circuit protection requirement does not exceed 30 A. The CHM4DU provides RoHS compliance, which may be required for new installations or regulatory compliance in certain jurisdictions.

Mechanical and electrical interface compatibility is maintained between the CHM4D and CHM4DU due to identical DIN rail mounting, 4-circuit configuration, 10mm x 38mm fuse accommodation, and screw terminal termination.

Frequently Asked Questions (FAQ)

Q: Can the CHM4DU be used as a direct replacement for the CHM4D?

A: The CHM4DU is mechanically compatible with the CHM4D. However, the CHM4DU is rated for 600V maximum and 30 A, compared to the CHM4D's 690V and 32 A ratings. Substitution is valid only when the application voltage does not exceed 600V and the required current protection does not exceed 30 A.

Q: What are the key compatibility factors between these two models?

A: Both models share identical mounting type (DIN Rail), circuit count (4), fuse type (Cartridge), fuse size (10mm x 38mm), and termination style (Screw Terminal). These parameters ensure mechanical and electrical interface compatibility.

Q: Why does the CHM4DU have lower voltage and current ratings?

A: The CHM4DU represents a downrated variant within the CH series. The reduced electrical ratings do not affect mechanical compatibility or fuse accommodation capability.

Q: Is the CHM4DU RoHS compliant?

A: Yes, the CHM4DU is RoHS compliant. The CHM4D RoHS status is not specified in available documentation.

Q: Are there any packaging differences between the CHM4D and CHM4DU?

A: The CHM4D packaging is not specified. The CHM4DU is supplied in bulk packaging.