CH141BMS-F Equivalent & Substitute Parts

Part Overview

The CH141BMS-F is a single-pole cartridge fuse holder manufactured by Eaton - Bussmann Electrical Division, rated for 50 A at 690V with DIN Rail mounting. This component is classified as obsolete, making identification of suitable substitute parts essential for system maintenance and component replacement in existing installations.

The CH141BMS-F is designed for 14mm x 51mm cartridge fuses and features screw terminal connections with copper contacts finished in silver. Due to its obsolete status, sourcing direct replacements requires evaluation of functionally equivalent alternatives that maintain compatibility with the original electrical and mechanical specifications.

Substiute Parts

CH141BMS-F

Eaton - Bussmann Electrical DivisionIn Stock: 1195CH141BMS-F Datasheet

Current PartRFQ

CH141DMSU-F

Eaton - Bussmann Electrical DivisionIn Stock: 884CH141DMSU-F Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CH141BMS-F is based on the following critical parameters that must remain constant:

• Current Rating: 50 A (electrical compatibility with circuit protection requirements)
• Fuse Size: 14mm x 51mm (mechanical fit within existing fuse holder cavities)
• Fuse Type: Cartridge (connector interface compatibility)
• Number of Circuits: 1 (circuit configuration match)
• Mounting Type: DIN Rail (installation compatibility)
• Termination Style: Screw Terminal (connection method compatibility)

The substitute part CH141DMSU-F meets all these critical parameters. The voltage rating increases from 690V to 700V, which represents an upward compatibility margin and does not restrict application in 690V circuits. The substitute part is classified as active product status with RoHS compliance certification, providing improved availability and regulatory alignment compared to the obsolete original part.

Parameter Comparison

Engineering Selection Recommendations

The CH141DMSU-F is the designated substitute for the obsolete CH141BMS-F based on the following engineering criteria:

Product Status: The CH141DMSU-F maintains active product status with current manufacturing support, ensuring long-term availability and supply chain reliability compared to the obsolete CH141BMS-F.

Regulatory Compliance: The CH141DMSU-F carries RoHS compliance certification, meeting current environmental and regulatory standards for electrical components in industrial applications.

Electrical Compatibility: The voltage rating increase from 690V to 700V represents upward compatibility and does not restrict application in systems designed for 690V operation. All other electrical parameters—current rating, fuse type, and circuit configuration—remain identical.

Mechanical Compatibility: Identical fuse size (14mm x 51mm), mounting type (DIN Rail), and termination style (Screw Terminal) ensure direct mechanical and electrical interface compatibility with existing installations.

Frequently Asked Questions (FAQ)

Q: Can CH141DMSU-F be used as a direct replacement for CH141BMS-F?

A: Yes. The CH141DMSU-F is electrically and mechanically compatible with the CH141BMS-F. Both components share identical current rating (50 A), fuse size (14mm x 51mm), circuit configuration (1 circuit), mounting type (DIN Rail), and termination style (Screw Terminal). The voltage rating increase from 690V to 700V does not restrict compatibility in 690V applications.

Q: What is the significance of the voltage rating difference between the two parts?

A: The CH141DMSU-F is rated for 700V compared to the CH141BMS-F at 690V. This represents an upward voltage margin and indicates the substitute part can safely operate at the original part's voltage specification. Higher voltage ratings do not create incompatibility in lower-voltage applications.

Q: Why is the CH141BMS-F classified as obsolete?

A: Obsolete status indicates the manufacturer has discontinued production of this component. The CH141DMSU-F is the active equivalent, ensuring continued availability and manufacturing support for this fuse holder category.

Q: Does the RoHS compliance of CH141DMSU-F affect compatibility?

A: No. RoHS compliance is an environmental and regulatory certification that indicates the substitute part meets current standards for hazardous substance restrictions. This certification does not affect electrical or mechanical compatibility and represents an improvement over the original part.

Q: Are the contact materials and finishes compatible?

A: Both parts feature copper contacts. The CH141BMS-F specifies silver contact finish, while the CH141DMSU-F does not specify finish material. Both use copper as the base contact material, ensuring electrical compatibility and consistent performance characteristics.

Q: What packaging format is available for the CH141DMSU-F?

A: The CH141DMSU-F is supplied in bulk packaging, compared to the original part's unspecified packaging format. Bulk packaging is standard for industrial component distribution and does not affect component functionality or installation.