CH223BNMS Equivalent & Substitute Parts

Part Overview

The CH223BNMS is a fuse holder manufactured by Eaton - Bussmann Electrical Division, designed for 22mm x 58mm cartridge fuses with a rated capacity of 125 A at 690V. This component is classified as obsolete and is no longer in active production. Due to its obsolete status, sourcing replacement units from current inventory may present supply chain challenges. The CH223DNMSU-F serves as the direct manufacturer-designated substitute, offering equivalent mechanical compatibility and functional performance with updated specifications and active product status.

Substiute Parts

CH223BNMS

Eaton - Bussmann Electrical DivisionIn Stock: 805CH223BNMS Datasheet

Current PartRFQ

CH223DNMSU-F

Eaton - Bussmann Electrical DivisionIn Stock: 770CH223DNMSU-F Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The CH223DNMSU-F is designated as a direct substitute based on the following critical parameters that ensure mechanical and functional compatibility:

• Fuse Size Compatibility: Both parts accommodate 22mm x 58mm cartridge fuses, ensuring physical fit within existing installations
• Mounting Configuration: Both utilize DIN Rail mounting with vertical orientation and screw terminal termination
• Circuit Configuration: Both provide 3-circuit functionality with copper contacts
• Voltage and Current Ratings: The substitute operates at 700V (compared to 690V) and 100 A (compared to 125 A), representing acceptable operational parameters within the same product family
• Series Continuity: Both belong to the CH series, confirming manufacturer lineage and design compatibility

The substitution is valid where the reduced current rating (100 A vs. 125 A) and slightly elevated voltage rating (700V vs. 690V) align with system requirements.

Parameter Comparison

Engineering Selection Recommendations

The CH223DNMSU-F is the appropriate substitute for the obsolete CH223BNMS based on the following factors:

• Active Product Status: The substitute is in active production, ensuring long-term availability and supply chain continuity
• Regulatory Compliance: The CH223DNMSU-F carries RoHS Compliant certification, meeting current environmental and safety standards
• Mechanical Compatibility: Identical fuse size, mounting configuration, and termination style ensure direct physical replacement without modification to existing installations
• Electrical Compatibility: The substitute's 700V rating exceeds the original 690V requirement, and the 100 A rating is suitable for applications not requiring the full 125 A capacity of the original part

Selection of the CH223DNMSU-F eliminates obsolescence risk while maintaining functional equivalence within the specified electrical and mechanical parameters.

Frequently Asked Questions (FAQ)

Q: Can the CH223DNMSU-F be used as a direct replacement for the CH223BNMS in existing installations?

A: Yes, the CH223DNMSU-F provides direct mechanical and functional replacement. Both parts share identical fuse size (22mm x 58mm), mounting type (DIN Rail), circuit configuration (3-circuit), and termination style (screw terminal). No modifications to the installation are required.

Q: What is the significance of the current rating difference (125 A vs. 100 A)?

A: The CH223DNMSU-F is rated for 100 A compared to the original 125 A. This substitute is appropriate for applications where the system current does not exceed 100 A. If your application requires the full 125 A capacity, the substitute may not be suitable.

Q: Why is the voltage rating higher on the substitute (700V vs. 690V)?

A: The CH223DNMSU-F operates at 700V, which exceeds the original 690V specification. A higher voltage rating is acceptable and does not create compatibility issues; the component can safely operate at or below its rated voltage.

Q: What does "RoHS Compliant" mean for the CH223DNMSU-F?

A: RoHS Compliance indicates that the substitute meets the Restriction of Hazardous Substances directive, restricting the use of specific hazardous materials. This is a regulatory requirement for many markets and applications.

Q: Are there any packaging differences between these parts?

A: The CH223BNMS is listed with packaging designation "-" (not specified), while the CH223DNMSU-F is supplied in Bulk packaging. This affects order quantities and handling but does not impact functional compatibility.

Q: Why is the CH223BNMS classified as obsolete?

A: Obsolete status indicates the manufacturer has discontinued production. The CH223DNMSU-F represents the current-generation equivalent, ensuring access to active inventory and ongoing manufacturer support.