USM2I Equivalent & Substitute Parts

Part Overview

The USM2I is a 600V 30A 2-pole mid-size fuse holder with indicator manufactured by Mersen USA Newburyport-MA L.L.C. This component is classified as active product status and is ROHS3 compliant. The device is designed for industrial electrical distribution and protection applications requiring reliable cartridge fuse accommodation at 600V nominal voltage with 30A current capacity. Equivalent and substitute parts are identified to support procurement flexibility, inventory management, and supply chain continuity when the primary part becomes unavailable or when alternative sourcing is required.

Substiute Parts

USM2I

Mersen USA Newburyport-MA L.L.C.In Stock: 1186USM2I Datasheet

Current PartRFQ

LPSM0002ZXID

Littelfuse Inc.In Stock: 909LPSM0002ZXID Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the USM2I is determined by strict electrical and mechanical compatibility criteria. The primary qualifying parameters are:

• Voltage rating of 600V or higher
• Current rating of 30A
• Two-circuit/pole configuration
• Cartridge fuse holder design
• Active product status ensuring ongoing manufacturer support and availability

The identified substitute part LPSM0002ZXID from Littelfuse Inc. meets all mandatory electrical parameters. Both parts accommodate 30A current at 600V across two circuits and are designed for cartridge fuse installation. Compliance certifications (ROHS3) are equivalent, ensuring regulatory alignment for industrial applications.

Parameter Comparison

Engineering Selection Recommendations

Both the USM2I and LPSM0002ZXID are active products with ROHS3 compliance, ensuring regulatory alignment and ongoing manufacturer support. Selection between these parts should be based on:

• Installation environment requirements (DIN rail mounting for LPSM0002ZXID is explicitly specified)
• Termination interface compatibility with existing electrical infrastructure (screw terminal and pressure plate for LPSM0002ZXID)
• Mechanical form factor and space constraints within the enclosure
• Supplier lead time and inventory availability

Both parts are suitable for 600V 30A two-circuit cartridge fuse holder applications. The LPSM0002ZXID provides explicit mechanical and termination specifications, enabling direct integration assessment in system design.

Frequently Asked Questions (FAQ)

Q: Can LPSM0002ZXID directly replace USM2I in existing installations?

A: Direct replacement requires verification of mounting type, termination style, and mechanical form factor compatibility. The LPSM0002ZXID is specified for DIN rail mounting with screw terminal and pressure plate termination. Confirm these specifications match the original installation requirements before substitution.

Q: Are the electrical ratings identical between USM2I and LPSM0002ZXID?

A: Yes. Both parts are rated for 600V and 30A across two circuits, meeting identical electrical specifications for cartridge fuse holder applications.

Q: What fuse types are compatible with these holders?

A: The LPSM0002ZXID accommodates 5AG cartridge fuses with 13/32" x 1-1/2" (Midget) dimensions. Verify fuse compatibility with the USM2I specifications before substitution.

Q: Are both parts RoHS compliant?

A: Yes. Both USM2I and LPSM0002ZXID are ROHS3 compliant, meeting current environmental and regulatory requirements for industrial electrical components.

Q: What is the difference in inventory availability?

A: USM2I has 1099 pieces in stock, while LPSM0002ZXID has 863 pieces available. Inventory levels may affect procurement timelines and supply chain decisions.