Mersen USA 30321 Fuse Block - Equivalent & Substitute Parts

Part Overview

The Mersen USA 30321 is a midget fuse block rated for 600V, 30A single-pole applications. This component is designed for circuit protection in industrial and commercial electrical systems. The part is currently active in production with full ROHS3 compliance and maintains substantial inventory availability. Equivalent and substitute parts are identified to support procurement flexibility, supply chain continuity, and application-specific mounting or termination requirements.

Substiute Parts

30321

Mersen USA Newburyport-MA L.L.C.In Stock: 116630321 Datasheet

Current PartRFQ

L60030M1PQ

Littelfuse Inc.In Stock: 1650L60030M1PQ Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the Mersen USA 30321 is determined by the following critical parameters:

• Voltage Rating: 600V (exact match required)
• Current Rating: 30A (exact match required)
• Number of Circuits: 1 (single-pole configuration)
• Fuse Type Compatibility: Cartridge fuse block accepting 5AG, 13/32" x 1-1/2" (Midget) fuses
• Product Status: Active production status
• Regulatory Compliance: ROHS3 Compliant

The Littelfuse Inc. L60030M1PQ meets all substitution criteria as a 600V, 30A, single-circuit cartridge fuse block. Differences in mounting type (chassis mount vs. standard mount) and termination style options do not preclude substitution when the application accommodates the specified mounting and connection method.

Parameter Comparison

Engineering Selection Recommendations

Both the Mersen USA 30321 and Littelfuse L60030M1PQ are active production components with ROHS3 compliance and full regulatory support. Selection between these parts should be based on:

• Mounting Requirements: The Littelfuse L60030M1PQ is specified for chassis mount applications with screw terminal, pressure plate, and quick connect termination options. Verify that the application accommodates chassis mounting and the available termination styles.
• Supply Availability: The Littelfuse part maintains higher current inventory (1557 pcs vs. 1071 pcs), supporting expedited procurement needs.
• Mechanical Fit: Confirm that the fuse block dimensions and mounting footprint are compatible with the target application enclosure or panel layout.

Frequently Asked Questions (FAQ)

Q: Can the Littelfuse L60030M1PQ directly replace the Mersen USA 30321?

A: Yes, provided the application accommodates chassis mount configuration and the available termination styles (screw terminal, pressure plate, or quick connect). Both parts are rated for 600V, 30A, single-circuit operation and accept 5AG/13/32" x 1-1/2" midget cartridge fuses.

Q: What are the key electrical parameters that must match for substitution?

A: Voltage rating (600V), current rating (30A), number of circuits (1), and fuse type compatibility (5AG midget cartridge) must be identical. Both parts meet these requirements.

Q: Are there any compliance or regulatory differences between these parts?

A: No. Both parts are ROHS3 compliant and active in production. The Littelfuse part carries additional certifications (REACH Unaffected, ECCN EAR99, HTSUS 8538.90.8180) relevant to international trade and environmental regulations.

Q: What is the difference between the mounting types?

A: The Littelfuse L60030M1PQ is specified for chassis mount, meaning it is designed to be mounted directly to an equipment chassis or panel. Verify that your application supports this mounting configuration before substitution.

Q: Can I use different termination styles interchangeably?

A: The Littelfuse part offers multiple termination options (screw terminal, pressure plate, quick connect). Select the termination style that matches your wiring and connection requirements. The Mersen part specifications do not detail termination options; confirm compatibility with your existing installation.