Mersen USA 30310 Midget Fuseblock 600V 30A - Equivalent & Substitute Parts

Part Overview

The Mersen USA 30310 is a midget fuseblock rated for 600V at 30A, designed for electrical protection and circuit isolation in industrial and commercial applications. This component is currently active in production with ROHS3 compliance certification. Equivalent and substitute parts may be required due to inventory availability, lead time considerations, or specific mounting and termination requirements in system design.

Substiute Parts

30310

Mersen USA Newburyport-MA L.L.C.In Stock: 86830310 Datasheet

Current PartRFQ

3743

Eaton - Bussmann Electrical DivisionIn Stock: 10093743 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

The Eaton - Bussmann Electrical Division part number 3743 qualifies as a functional substitute based on the following critical parameters:

• Voltage Rating: 600V (matches main part)
• Current Rating: 30A (matches main part)
• Fuse Type: Cartridge with 5AG, 13/32" x 1-1/2" (Midget) specification (compatible with midget fuseblock category)
• Fuseholder Type: Block (same functional category)
• Number of Circuits: 1 (single circuit protection)
• Product Status: Active (current production)
• RoHS Compliance: RoHS Compliant (meets environmental standards)

The primary difference is mounting configuration: the 3743 is chassis mount with screw terminal termination, whereas the 30310 uses a box packaging format. This substitution is valid when system design accommodates chassis mounting and screw terminal connections.

Parameter Comparison

Engineering Selection Recommendations

Both the Mersen 30310 and Eaton 3743 are active production components with current RoHS compliance certifications. Selection between these parts should be based on:

• Mounting requirements: The 3743 requires chassis mount installation with screw terminal connections
• Packaging format: The 30310 is supplied in box packaging; the 3743 in bulk packaging
• Inventory availability: The 3743 currently has higher stock levels (958 pcs vs. 791 pcs)
• System integration: Verify that the chassis mount configuration and screw terminal termination are compatible with your application's mechanical and electrical interface requirements

Both parts meet the core electrical specifications of 600V, 30A single-circuit protection with cartridge fuse compatibility.

Frequently Asked Questions (FAQ)

Q: Can the Eaton 3743 directly replace the Mersen 30310 in my application?

A: Electrical compatibility is confirmed (600V, 30A, single-circuit cartridge fuse block). However, the 3743 is chassis mount with screw terminals, while the 30310 uses box packaging. Verify that your system's mechanical mounting and termination interface support these differences before substitution.

Q: What fuse types are compatible with both parts?

A: Both parts accept 5AG cartridge fuses rated 13/32" x 1-1/2" (10mm x 38mm), classified as midget fuses. Ensure any replacement fuses meet this dimensional and electrical specification.

Q: Are both parts RoHS compliant?

A: Yes. The Mersen 30310 is ROHS3 Compliant, and the Eaton 3743 is RoHS Compliant. Both meet current environmental regulatory requirements.

Q: What is the contact material in the Eaton 3743?

A: The 3743 uses beryllium copper contacts, providing reliable electrical conductivity and durability in high-current applications.

Q: Can I use these parts interchangeably in a 30A, 600V circuit protection application?

A: Electrical interchangeability is confirmed for the specified voltage and current ratings. Mechanical interchangeability depends on your system's mounting configuration and termination style. Confirm that chassis mount with screw terminal connections are compatible with your design before substitution.