LR601001C Equivalent & Substitute Parts

Part Overview

The LR601001C is a Class R fuse holder rated for 100 A at 600V, designed for single-circuit cartridge fuses with chassis mount configuration. This component is classified as obsolete, making identification of functionally equivalent alternatives essential for system maintenance and component procurement.

The primary reason for identifying substitutes is the obsolete product status. While the LR601001C remains in stock, sourcing may become constrained over time. Equivalent alternatives maintain the same electrical ratings and fuse compatibility while offering updated product lines with active manufacturing status.

Substiute Parts

LR601001C

Littelfuse Inc.In Stock: 1004LR601001C Datasheet

Current PartRFQ

LFR601001CID

Littelfuse Inc.In Stock: 1189LFR601001CID Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The LFR601001CID qualifies as a direct substitute based on the following critical parameters:

• Current Rating: Both parts rated for 100 A
• Voltage Rating: Both rated for 600V
• Fuse Type & Size: Both accept 1.339" Dia x 7.874" L cartridge fuses
• Fuse Compatibility: Both designed for Class R fuses
• Number of Circuits: Both single-circuit configurations
• Termination Style: Both feature box lug termination

The primary difference is the mounting configuration: the LR601001C uses chassis mount, while the LFR601001CID uses DIN rail mount. This distinction affects installation method but does not alter electrical compatibility or fuse acceptance criteria.

Parameter Comparison

Engineering Selection Recommendations

The LFR601001CID is electrically and mechanically compatible with the LR601001C for applications requiring 100 A, 600V single-circuit cartridge fuse protection. Selection between these parts depends on installation requirements:

Choose LFR601001CID when:

• DIN rail mounting is available or preferred in the enclosure design
• Active product status and ongoing manufacturer support are required
• RoHS3 compliance is mandated by system specifications or regulatory requirements
• Long-term component availability is a procurement priority

Retain LR601001C when:

• Existing chassis mount infrastructure is fixed and cannot be modified
• RoHS non-compliance is acceptable within the application context
• Current inventory meets immediate project timelines

Both parts accept identical Class R cartridge fuses and maintain equivalent electrical performance at rated specifications.

Frequently Asked Questions (FAQ)

Q: Can the LFR601001CID directly replace the LR601001C in an existing installation?

A: Electrical compatibility is complete. Physical installation requires DIN rail mounting capability. If the original enclosure uses chassis mount only, mechanical adaptation or enclosure modification is necessary.

Q: Are the fuses interchangeable between these two holders?

A: Yes. Both holders accept Class R cartridge fuses sized 1.339" Dia x 7.874" L (34mm x 200mm). Fuse selection remains independent of holder choice.

Q: What is the significance of the RoHS compliance difference?

A: The LR601001C is RoHS non-compliant, while the LFR601001CID is ROHS3 compliant. If the system design or end-use market requires RoHS compliance, the LFR601001CID is the appropriate selection.

Q: Do both parts have the same electrical ratings?

A: Yes. Both are rated for 100 A at 600V with single-circuit configuration and box lug termination.

Q: Why is the LR601001C listed as obsolete?

A: Obsolete status indicates the manufacturer has discontinued active production. The LFR601001CID represents the current product line equivalent from Littelfuse Inc.