DMM-B-44-100-R Equivalent & Substitute Parts

Part Overview

The DMM-B-44-100-R is a 440mA fast-blow fuse cartridge manufactured by Eaton - Electronics Division. This component is designed for multi-meter applications and operates at 1 kVAC / 1 kVDC with a breaking capacity of 10kA at rated voltage. The part is currently active in production with 10,200 units in stock. Equivalent and substitute parts are identified to support procurement flexibility, inventory management, and supply chain continuity for applications requiring identical electrical and mechanical performance characteristics.

Substiute Parts

DMM-B-44-100-R

Eaton - Electronics DivisionIn Stock: 10217DMM-B-44-100-R Datasheet

Current PartRFQ

943121

Fluke ElectronicsIn Stock: 1322943121 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the DMM-B-44-100-R are identified based on strict equivalence of the following critical parameters:

• Current Rating: 440mA (exact match required)
• Voltage Rating - AC: 1 kVAC (exact match required)
• Response Time: Fast Blow (exact match required)
• Fuse Type: Cartridge (exact match required)
• Mounting Type: Requires Holder (exact match required)
• Physical Dimensions: 0.406" Dia x 1.374" L nominal (tolerance within manufacturing standards)
• Applications: Multi-Meters (functional equivalence)

The substitute part Fluke Electronics 943121 meets all critical electrical parameters and physical form factor requirements, enabling direct functional replacement in multi-meter applications. Dimensional tolerance of ±0.001" is acceptable for cartridge fuse holder compatibility.

Parameter Comparison

Engineering Selection Recommendations

Primary Part: DMM-B-44-100-R (Eaton - Electronics Division)

The DMM-B-44-100-R is the specified component with active production status and dual certification (CE, UL). This part carries explicit approval agency documentation and is recommended for new designs and applications requiring certified fuse components.

Substitute Part: 943121 (Fluke Electronics)

The Fluke Electronics 943121 cartridge fuse is electrically and mechanically equivalent to the DMM-B-44-100-R. It matches all critical parameters: 440mA current rating, 1 kVAC voltage rating, fast-blow response time, cartridge form factor, and multi-meter application suitability. Physical dimensions are within acceptable tolerance (±0.001" variance). This substitute is suitable for direct replacement in existing applications where the primary part is unavailable. Product status is active with 1,242 units in stock. The substitute part is RoHS Compliant and REACH Unaffected, meeting environmental compliance requirements.

Selection between primary and substitute parts should be based on availability, lead time, and procurement requirements. Both parts are functionally interchangeable for the specified application.

Frequently Asked Questions (FAQ)

Q: Can the Fluke Electronics 943121 be used as a direct replacement for the DMM-B-44-100-R?

A: Yes. The 943121 meets all critical electrical parameters (440mA, 1 kVAC, fast-blow response) and physical form factor requirements (0.406" Dia x 1.375" L). Dimensional variance of 0.001" is within acceptable tolerance for cartridge fuse holder compatibility.

Q: What are the key parameters that determine substitution eligibility?

A: Substitution eligibility is determined by exact equivalence in: current rating (440mA), AC voltage rating (1 kVAC), response time (fast-blow), fuse type (cartridge), mounting type (requires holder), and physical dimensions within manufacturing tolerance. Application category (multi-meters) must also match.

Q: Does the substitute part have the same certifications as the primary part?

A: The primary part DMM-B-44-100-R carries CE and UL certifications. The substitute part 943121 does not specify approval agency certifications in the provided data. Applications requiring certified components should use the primary part.

Q: Are there any packaging differences between the primary and substitute parts?

A: The primary part is packaged as non-standard cartridge format. The substitute part is supplied in bulk packaging. Both use identical cartridge form factor and require the same holder type.

Q: What is the voltage rating for DC operation?

A: The primary part DMM-B-44-100-R is rated for 1 kVDC. The substitute part 943121 does not specify DC voltage rating in the provided data. For applications requiring DC operation confirmation, the primary part is recommended.

Q: Are both parts RoHS compliant?

A: The substitute part 943121 is explicitly RoHS Compliant. RoHS status for the primary part DMM-B-44-100-R is not specified in the provided data.