CH221BNX Equivalent & Substitute Parts

Part Overview

The CH221BNX is a fuse holder manufactured by Eaton - Bussmann Electrical Division, designed for 22mm x 58mm cartridge fuses with a 100 A current rating at 700V. This component is classified as obsolete and has been superseded by active alternatives. Locating equivalent parts is necessary to maintain system functionality and ensure continued availability for replacement and new installations.

Substiute Parts

CH221BNX

Eaton - Bussmann Electrical DivisionIn Stock: 1128CH221BNX Datasheet

Current PartRFQ

CH221DNXU

Eaton - Bussmann Electrical DivisionIn Stock: 1008CH221DNXU Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The CH221DNXU serves as a direct substitute for the CH221BNX based on identical electrical and mechanical specifications. Substitution is valid when the following parameters match:

• Fuse size: 22mm x 58mm
• Current rating: 100 A
• Voltage rating: 700V
• Number of circuits: 1
• Mounting configuration: DIN Rail with vertical orientation
• Termination method: Screw Terminal

The CH221DNXU maintains full compatibility with applications originally designed for the CH221BNX while offering the advantage of active product status and current manufacturing support.

Parameter Comparison

Engineering Selection Recommendations

The CH221DNXU is the appropriate selection for applications requiring a 22mm x 58mm cartridge fuse holder rated for 100 A at 700V with DIN Rail mounting. This part is currently in active production status, ensuring long-term availability and supply chain reliability. The CH221DNXU meets RoHS compliance requirements, making it suitable for applications subject to environmental and regulatory standards. Direct mechanical and electrical compatibility with the obsolete CH221BNX eliminates the need for system redesign or reconfiguration.

Frequently Asked Questions (FAQ)

Q: Can the CH221DNXU be used as a direct replacement for the CH221BNX?

A: Yes. Both parts share identical electrical ratings (100 A, 700V), mechanical dimensions (22mm x 58mm), mounting configuration (DIN Rail), and termination method (Screw Terminal). No modifications to the installation or circuit design are required.

Q: What is the primary advantage of switching from CH221BNX to CH221DNXU?

A: The CH221DNXU is an active product with current manufacturing support, whereas the CH221BNX is obsolete. This ensures continued availability, consistent quality, and compliance with current standards including RoHS.

Q: Are there any compatibility concerns with existing installations?

A: No. The CH221DNXU maintains full mechanical and electrical compatibility with systems designed for the CH221BNX. Installation procedures and cartridge fuse specifications remain unchanged.

Q: What fuse types are compatible with these holders?

A: Both holders accept 22mm x 58mm cartridge fuses rated for 100 A at 700V. Fuse selection must match the specific circuit protection requirements of the application.