CH223BMS Equivalent & Substitute Parts

Part Overview

The CH223BMS is a 3-circuit cartridge fuse holder manufactured by Eaton - Bussmann Electrical Division, rated for 100 A at 600V with DIN Rail mounting. This component is classified as obsolete, making identification of compatible substitute parts essential for system maintenance and component replacement in existing installations.

The CH223BMS serves as a protective switching device in industrial electrical distribution systems where multiple circuit protection is required. Due to its obsolete status, sourcing direct replacements from current production inventory necessitates evaluation of functionally equivalent alternatives that maintain electrical and mechanical compatibility.

Substiute Parts

CH223BMS

Eaton - Bussmann Electrical DivisionIn Stock: 866CH223BMS Datasheet

Current PartRFQ

CH223DMSU-F

Eaton - Bussmann Electrical DivisionIn Stock: 1028CH223DMSU-F Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CH223BMS is determined by the following critical parameters that must remain constant or be compatible:

• Current Rating: 100 A (exact match required)
• Fuse Size: 22mm x 58mm cartridge (mechanical compatibility)
• Number of Circuits: 3-pole configuration
• Mounting Type: DIN Rail
• Termination Style: Screw Terminal
• Fuse Type: Cartridge

The CH223DMSU-F qualifies as a direct substitute based on matching all critical mechanical and electrical parameters. The voltage rating increase from 600V to 700V represents an upward compatibility margin and does not restrict application in 600V systems. The addition of microswitch functionality and active product status make this substitute suitable for new installations and replacements.

Parameter Comparison

Engineering Selection Recommendations

The CH223DMSU-F is the designated substitute for the obsolete CH223BMS based on the following engineering criteria:

Electrical Compatibility: Both components share identical current ratings (100 A) and fuse cartridge specifications (22mm x 58mm). The CH223DMSU-F voltage rating of 700V exceeds the original 600V specification, ensuring safe operation in the original application without derating.

Mechanical Compatibility: Identical DIN Rail mounting, screw terminal configuration, and 3-circuit architecture ensure direct physical and electrical integration into existing installations without modification to mounting hardware or wiring.

Product Status and Compliance: The CH223DMSU-F is an active production component with RoHS compliance certification, providing long-term availability and regulatory alignment for new system designs and maintenance replacements.

Functional Enhancement: The CH223DMSU-F incorporates microswitch functionality, providing additional monitoring capability without compromising backward compatibility with the original CH223BMS application.

Frequently Asked Questions (FAQ)

Q: Can the CH223DMSU-F be used as a direct replacement for the CH223BMS in existing 600V systems?

A: Yes. The CH223DMSU-F is rated for 700V, which exceeds the original 600V requirement. All mechanical and electrical parameters match the original specification, enabling direct substitution without system modification.

Q: Are the fuse cartridges interchangeable between CH223BMS and CH223DMSU-F?

A: Yes. Both holders accept identical 22mm x 58mm cartridge fuses. The mechanical interface is unchanged between the two models.

Q: What is the significance of the microswitch feature in the CH223DMSU-F?

A: The microswitch provides circuit status monitoring capability. This is an additional feature that does not affect compatibility with the original CH223BMS application, where the microswitch can remain unused if not required by the system design.

Q: Does the RoHS compliance of the CH223DMSU-F affect its use in legacy systems?

A: No. RoHS compliance indicates the substitute meets current environmental and material standards. This does not restrict its application in existing systems and ensures regulatory alignment for future maintenance and upgrades.

Q: Are there any termination or mounting differences between these models?

A: No. Both models use screw terminal connections and DIN Rail mounting. Installation procedures and wiring practices remain identical.