LR606003C Equivalent & Substitute Parts

Part Overview

The LR606003C is a Class R fuse holder rated for 600A at 600V, designed for chassis mount applications with three circuits and cartridge-type fuses. This component is classified as obsolete, making identification of suitable alternatives essential for system maintenance and component replacement in existing installations.

The primary reason for seeking substitute parts is the obsolete status of the original component. Active alternatives with equivalent electrical and mechanical specifications ensure continued availability and support for systems utilizing this fuse holder configuration.

Substiute Parts

LR606003C

Littelfuse Inc.In Stock: 1096LR606003C Datasheet

Current PartRFQ

LFR606003C

Littelfuse Inc.In Stock: 1212LFR606003C Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the LR606003C is based on electrical and mechanical parameter equivalence. The following criteria determine valid alternatives:

• Current Rating: 600 A (exact match required)
• Voltage Rating: 600V (exact match required)
• Number of Circuits: 3 (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)
• Termination Style: Box Lug (exact match required)
• Compatible Fuse Series: Class R Fuses (exact match required)

The LFR606003C meets all substitution criteria. While the mounting configuration differs (DIN Rail versus Chassis Mount), the electrical specifications, fuse compatibility, and physical dimensions remain identical, allowing functional equivalence in applications where mounting method can be accommodated.

Parameter Comparison

Engineering Selection Recommendations

The LFR606003C is the direct substitute for the LR606003C based on electrical and mechanical equivalence. Selection of the LFR606003C provides the following advantages:

• Active product status ensures ongoing availability and manufacturer support
• ROHS3 compliance meets current environmental and regulatory requirements
• Identical electrical ratings (600A, 600V, 3-circuit configuration) ensure functional compatibility with Class R fuses
• Matching physical dimensions and termination style maintain electrical connection integrity

The primary consideration for implementation is the difference in mounting configuration: the LFR606003C utilizes DIN Rail mounting rather than chassis mount. System integration must accommodate this mounting method change.

Frequently Asked Questions (FAQ)

Q: Can the LFR606003C directly replace the LR606003C in existing installations?

A: The LFR606003C provides electrical and mechanical equivalence in terms of current rating, voltage rating, circuit count, fuse compatibility, and physical dimensions. The primary difference is mounting method (DIN Rail versus Chassis Mount). Substitution is feasible where the mounting configuration can be adapted to the installation.

Q: Are the fuses compatible between these two fuse holders?

A: Both the LR606003C and LFR606003C accept Class R cartridge fuses of identical physical dimensions (3.13" Dia x 13.374" L). Fuse compatibility is maintained between the two models.

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

A: The LR606003C is RoHS non-compliant, while the LFR606003C is ROHS3 compliant. For new installations or systems subject to environmental regulations, the LFR606003C meets current compliance requirements.

Q: Are there any electrical performance differences between these models?

A: No. Both models are rated for 600A at 600V with three circuits and identical termination specifications. Electrical performance is equivalent.

Q: What inventory status should be considered for procurement?

A: The LR606003C (obsolete) has 1014 units in stock. The LFR606003C (active) has 1107 units in stock. For long-term availability, the active LFR606003C is the preferred selection.