CHM1DI Equivalent & Substitute Parts

Part Overview

The CHM1DI is a cartridge fuse holder manufactured by Eaton - Bussmann Electrical Division, designed for DIN rail mounting in single-circuit applications. Rated for 32 A at 690V, this component is classified as obsolete. Due to its obsolete status, identifying equivalent substitute parts is essential for system maintenance, repair, and component sourcing in ongoing installations.

Substiute Parts

CHM1DI

Eaton - Bussmann Electrical DivisionIn Stock: 940CHM1DI Datasheet

Current PartRFQ

CHM1DIU

Eaton - Bussmann Electrical DivisionIn Stock: 1442CHM1DIU Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The CHM1DIU is identified as a direct substitute for the CHM1DI based on the following allowable parameter variations:

Preserved Parameters (Must Match for Substitution):

• Mounting Type: DIN Rail
• Fuse Size: 0.394" Dia x 1.496" L (10mm x 38mm)
• Fuse Type: Cartridge
• Number of Circuits: 1
• Compatible Fuse Standard: 5AG, 13/32" x 1-1/2" (Midget)
• Termination Style: Screw Terminal (CHM1DI) / Not specified (CHM1DIU)

Allowable Parameter Variations:

• Current Rating: 32 A (CHM1DI) → 30 A (CHM1DIU)
• Voltage Rating: 690V (CHM1DI) → 600V (CHM1DIU)
• Series: CH (CHM1DI) → CHM (CHM1DIU)
• Product Status: Obsolete (CHM1DI) → Active (CHM1DIU)

The CHM1DIU operates at lower electrical ratings (30 A / 600V versus 32 A / 690V), making it suitable for applications where the system voltage and current requirements do not exceed these limits.

Parameter Comparison

Engineering Selection Recommendations

The CHM1DIU is an active product offering from Eaton - Bussmann Electrical Division and represents the current production equivalent to the obsolete CHM1DI. Both components share identical mechanical form factors and mounting specifications, ensuring physical compatibility in DIN rail installations.

Selection of the CHM1DIU as a substitute is appropriate when system design parameters accommodate the lower electrical ratings of 30 A at 600V. The substitute maintains REACH compliance and EAR99 export classification, consistent with the original part.

For applications requiring the original 32 A / 690V specifications, alternative components from the current Eaton product portfolio should be evaluated to ensure electrical performance requirements are met.

Frequently Asked Questions (FAQ)

Q: Can CHM1DIU be used as a direct replacement for CHM1DI in all applications?

A: CHM1DIU is mechanically compatible with CHM1DI due to identical fuse size and DIN rail mounting. However, electrical compatibility depends on system voltage and current requirements. CHM1DIU is rated for 30 A at 600V, while CHM1DI is rated for 32 A at 690V. Substitution is valid only when system operating parameters do not exceed 30 A and 600V.

Q: What is the significance of the series designation change from CH to CHM?

A: The series designation change reflects the product line evolution from the obsolete CH series to the active CHM series. Both series utilize identical cartridge fuse holder form factors and mounting standards.

Q: Are there compliance differences between CHM1DI and CHM1DIU?

A: Both parts maintain REACH Unaffected status and EAR99 export classification. The CHM1DIU carries RoHS3 compliance certification, whereas the CHM1DI does not specify RoHS status.

Q: What fuse types are compatible with both the CHM1DI and CHM1DIU?

A: Both holders accept 5AG cartridge fuses with dimensions 13/32" x 1-1/2" (10mm x 38mm), ensuring interchangeable fuse compatibility.

Q: Why is CHM1DI classified as obsolete?

A: The CHM1DI has been discontinued by the manufacturer. The CHM1DIU represents the current active product offering for equivalent single-circuit DIN rail cartridge fuse holder applications.