Equivalent & Substitute Parts for Mersen 30321R CC Fuse Block

Part Overview

The Mersen 30321R is a 600V, 30A single-pole cartridge fuse block designed for panel-mount applications. This component is classified as active and fully compliant with ROHS3 standards. Equivalent and substitute parts are identified based on matching electrical ratings, mechanical compatibility, and functional performance within the fuse block category. Alternative models may be required due to inventory availability, lead time considerations, or specific mounting and termination requirements for particular applications.

Substiute Parts

30321R

Mersen USA Newburyport-MA L.L.C.In Stock: 114530321R Datasheet

Current PartRFQ

L60030C1PQ

Littelfuse Inc.In Stock: 956L60030C1PQ Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

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

• Voltage rating of 600V
• Current rating of 30A
• Single-circuit (1-pole) configuration
• Cartridge fuse block type
• Active product status with current manufacturing support
• ROHS3 compliance certification

The Littelfuse L60030C1PQ qualifies as a functional equivalent based on matching all primary electrical parameters. Both components are rated for 600V, 30A operation in single-circuit configurations and utilize cartridge-type fuse elements. Differences in mounting style (chassis mount versus panel mount) and termination options do not preclude substitution when the application mechanical constraints permit.

Parameter Comparison

Engineering Selection Recommendations

Both the Mersen 30321R and Littelfuse L60030C1PQ are active products with ROHS3 compliance and equivalent electrical performance at 600V, 30A ratings. Selection between these components should be based on:

• Mounting configuration requirements: The Mersen 30321R is specified for panel mounting, while the Littelfuse L60030C1PQ is chassis-mount. Verify mechanical fit within the target enclosure.
• Termination compatibility: The Littelfuse model offers screw terminal, pressure plate, and quick connect options. Confirm termination type compatibility with existing wiring infrastructure.
• Inventory and lead time: Current stock levels are 1068 units for the Mersen part and 930 units for the Littelfuse part.
• Series continuity: The Littelfuse component belongs to the L600 series, providing design consistency if other L600 series components are already specified.

Frequently Asked Questions (FAQ)

Q: Can the Littelfuse L60030C1PQ directly replace the Mersen 30321R in all applications?

A: Electrical compatibility is confirmed at 600V, 30A ratings. Physical compatibility depends on mounting style and termination requirements. The Mersen part is panel-mount while the Littelfuse is chassis-mount. Verify mechanical fit and termination type before substitution.

Q: What fuse elements are compatible with these fuse blocks?

A: Both blocks accept 5AG cartridge fuses rated 13/32" x 1-1/2" (Midget) format, 10mm x 38mm. Verify fuse element specifications with the component datasheet.

Q: Are both parts suitable for new designs?

A: Yes. Both the Mersen 30321R and Littelfuse L60030C1PQ are active products with current manufacturing support and ROHS3 compliance, making them suitable for new equipment designs.

Q: What is the difference between panel-mount and chassis-mount configurations?

A: Panel-mount components are installed from the front of an enclosure panel. Chassis-mount components are installed from the rear or internal structure. Application geometry determines which mounting style is appropriate.

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

A: Both components are ROHS3 compliant. The Littelfuse part carries additional certifications including REACH Unaffected status and EAR99 export classification. Verify all applicable compliance requirements for your specific application.