Mersen 30312 Midget Fuseblock 600V 30A 2P - Equivalent & Substitute Parts

Part Overview

The Mersen 30312 is a midget fuseblock rated for 600V at 30A with 2-pole configuration, designed for industrial and commercial electrical protection applications. This component is currently active in production with full ROHS3 compliance. Identifying equivalent substitute parts is essential for supply chain continuity, inventory management, and ensuring uninterrupted availability of compatible protection devices in critical installations.

Substiute Parts

30312

Mersen USA Newburyport-MA L.L.C.In Stock: 196130312 Datasheet

Current PartRFQ

L60030M2SQ

Littelfuse Inc.In Stock: 100277L60030M2SQ Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the Mersen 30312 is determined by the following critical parameters:

• Voltage Rating: 600V (exact match required)
• Current Rating: 30A (exact match required)
• Number of Circuits/Poles: 2-circuit configuration (exact match required)
• Fuse Type Compatibility: Midget cartridge format (5AG, 13/32" x 1-1/2")
• Product Status: Active production status
• Regulatory Compliance: ROHS3 Compliant

The Littelfuse L60030M2SQ qualifies as a direct substitute based on matching voltage, current, circuit count, and fuse cartridge compatibility specifications.

Parameter Comparison

Engineering Selection Recommendations

Both the Mersen 30312 and Littelfuse L60030M2SQ maintain active product status with full ROHS3 compliance and EAR99 classification. Selection between these components should be based on:

• Mechanical mounting requirements (the Littelfuse L60030M2SQ is specified as chassis mount)
• Termination style compatibility (Littelfuse offers screw terminal and quick connect options)
• Contact material and finish specifications (Littelfuse uses copper alloy with tin finish)
• Inventory availability and lead time considerations
• Existing installation base standardization

Frequently Asked Questions (FAQ)

Q: Can the Littelfuse L60030M2SQ directly replace the Mersen 30312 in existing installations?

A: Yes, provided that the mounting configuration (chassis mount) and termination style (screw terminal or quick connect) are compatible with the existing installation. Both components share identical voltage (600V), current (30A), and circuit count (2) specifications.

Q: What fuse cartridge types are compatible with these fuseblocks?

A: Both the Mersen 30312 and Littelfuse L60030M2SQ accept midget cartridge fuses in the 5AG format with dimensions 13/32" x 1-1/2" (10mm x 38mm).

Q: Are there any compliance differences between these two components?

A: No. Both components are ROHS3 compliant, classified as EAR99, and maintain active production status. Regulatory compliance is equivalent.

Q: What is the significance of the mounting type specification?

A: The Littelfuse L60030M2SQ is designated as chassis mount, which defines the physical installation method. Verify that the existing installation supports chassis mount configuration before substitution.

Q: How do termination options affect component selection?

A: The Littelfuse L60030M2SQ offers both screw terminal and quick connect termination styles. Confirm that the selected termination style matches the existing wiring and connection infrastructure in your application.