LR606001C Equivalent & Substitute Parts

Part Overview

The LR606001C is a Class R cartridge fuse holder rated for 600A at 600V, designed for chassis mount applications in industrial electrical systems. This component is classified as obsolete, making equivalent substitute parts necessary for system maintenance, repairs, and new installations where Class R fuse compatibility is required. The primary functional requirement is to safely hold and protect Class R cartridge fuses in high-current distribution circuits.

Substiute Parts

LR606001C

Littelfuse Inc.In Stock: 756LR606001C Datasheet

Current PartRFQ

LFR606001C

LittelfuseIn Stock: 1129LFR606001C Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the LR606001C is determined by strict alignment of electrical and mechanical parameters:

Critical Matching Parameters:

• Current Rating: 600 A (exact match required)
• Voltage Rating: 600V (exact match required)
• Fuse Type: Cartridge (exact match required)
• Fuse Size: 3.13" Dia x 13.374" L / 79.5mm x 339.7mm (exact match required)
• Number of Circuits: 1 (exact match required)
• Termination Style: Box Lug (exact match required)
• Class R Fuse Compatibility (exact match required)

The LFR606001C qualifies as a direct substitute because it maintains all critical electrical and mechanical parameters while offering an active product status and improved compliance profile. The primary difference is the mounting configuration: the LR606001C uses chassis mount, while the LFR606001C uses DIN rail mount. Both accommodate identical Class R cartridge fuses and deliver equivalent electrical performance in their respective mounting environments.

Parameter Comparison

Engineering Selection Recommendations

For Chassis Mount Applications: The LR606001C remains the specified component when chassis mount configuration is a system requirement. Existing inventory of 744 pieces supports continued use in legacy systems.

For New Installations or Upgrades: The LFR606001C is the preferred selection. It provides identical electrical performance and mechanical compatibility with Class R cartridge fuses while offering active product status, ROHS3 compliance, and superior long-term availability. The DIN rail mounting configuration is standard in modern industrial control systems and provides superior modularity and serviceability.

For Compliance-Critical Applications: The LFR606001C meets ROHS3 requirements, making it suitable for applications subject to environmental and regulatory compliance mandates. The LR606001C does not meet these standards.

Frequently Asked Questions (FAQ)

Q: Can the LFR606001C replace the LR606001C in existing installations?

A: Electrical and mechanical compatibility is complete. The LFR606001C accepts identical Class R cartridge fuses and delivers equivalent 600A/600V performance. The primary consideration is mounting configuration: the LFR606001C requires DIN rail infrastructure, while the LR606001C uses chassis mount. Retrofit feasibility depends on available panel space and mounting hardware.

Q: What Class R fuse specifications are compatible with both holders?

A: Both the LR606001C and LFR606001C accommodate Class R cartridge fuses with dimensions of 3.13" diameter x 13.374" length (79.5mm x 339.7mm). Fuse amperage ratings must not exceed 600A, and voltage ratings must not exceed 600V.

Q: Why is the LR606001C listed as obsolete?

A: Littelfuse has transitioned the Class R fuse holder product line toward DIN rail mounting standards, which offer improved modularity and integration with modern industrial control systems. The LFR606001C represents the active equivalent in the current product portfolio.

Q: Are there compliance differences between these two parts?

A: Yes. The LFR606001C is ROHS3 compliant and REACH unaffected, while the LR606001C is RoHS non-compliant. For applications subject to environmental regulations or customer compliance requirements, the LFR606001C is the appropriate selection.

Q: What is the inventory status for each part?

A: The LR606001C has 744 pieces in stock as new original inventory. The LFR606001C has 1040 pieces available. Both maintain adequate stock for immediate procurement.