USM1I Equivalent & Substitute Parts

Part Overview

The USM1I is a 600V 30A single-pole mid fuse with indicator manufactured by Mersen USA Newburyport-MA L.L.C. This component is classified as active product status and maintains ROHS3 compliance. Alternative components may be required due to supply chain considerations, application-specific mounting requirements, or inventory availability while maintaining equivalent electrical and mechanical performance.

Substiute Parts

USM1I

Mersen USA Newburyport-MA L.L.C.In Stock: 1030USM1I Datasheet

Current PartRFQ

LPSM0001ZXID

Littelfuse Inc.In Stock: 994LPSM0001ZXID Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the USM1I is based on the following critical electrical and mechanical parameters:

• Voltage Rating: 600V (exact match required)
• Current Rating: 30A (exact match required)
• Fuse Type: Cartridge format
• Mounting Configuration: DIN Rail compatibility
• Circuit Count: Single circuit (1)
• Compliance: ROHS3 Compliant status maintained

The substitute part LPSM0001ZXID from Littelfuse Inc. meets these core substitution criteria through equivalent electrical ratings and compatible mechanical form factor for DIN Rail installation.

Parameter Comparison

Engineering Selection Recommendations

Both the USM1I and LPSM0001ZXID maintain active product status and ROHS3 compliance, qualifying them for equivalent use in 600V 30A single-circuit applications. Selection between these components should be based on:

• Availability and lead time requirements
• Specific termination style compatibility (screw terminal vs. pressure plate)
• DIN Rail mounting space and clearance constraints
• Existing inventory and supply chain logistics

Frequently Asked Questions (FAQ)

Q: Can LPSM0001ZXID directly replace USM1I in all applications?

A: Both components share identical voltage (600V) and current (30A) ratings with single-circuit DIN Rail configuration. Verify termination style compatibility and physical mounting clearance before substitution.

Q: What are the critical parameters for substitution?

A: Voltage rating (600V), current rating (30A), circuit count (1), and DIN Rail mounting compatibility are the determining factors for equivalent substitution.

Q: Are both parts RoHS compliant?

A: Yes, both USM1I and LPSM0001ZXID maintain ROHS3 compliance status.

Q: What is the physical size difference?

A: LPSM0001ZXID is specified as 0.394" Dia x 1.496" L (10mm x 38mm). Physical dimensions for USM1I are not provided in the available data.

Q: Which part has better availability?

A: LPSM0001ZXID currently shows 974 pieces in stock compared to USM1I at 953 pieces. Both maintain adequate inventory levels.