LH600303PR Equivalent & Substitute Parts

Part Overview

The LH600303PR is a 30 A, 600V cartridge fuse block designed for chassis mount applications with 3 circuits. This component is classified as obsolete, making identification of suitable substitutes essential for ongoing maintenance and system support. The part accommodates Class H(K) and Class R fuses in a cartridge format with screw terminal and pressure plate termination.

Substiute Parts

LH600303PR

Littelfuse Inc.In Stock: 820LH600303PR Datasheet

Current PartRFQ

LFH600303PID

Littelfuse Inc.In Stock: 922LFH600303PID Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the LH600303PR is based on electrical and mechanical compatibility across the following critical parameters:

• Current Rating: 30 A (exact match required)
• Voltage Rating: 600V (exact match required)
• Number of Circuits: 3 (exact match required)
• Fuse Type: Cartridge (exact match required)
• Fuseholder Type: Block (exact match required)
• Termination Style: Screw Terminal, Pressure Plate (exact match required)
• Compatible Fuse Classes: Class H(K), Class R (exact match required)

The LFH600303PID qualifies as a direct substitute based on these parameters. The primary difference is the mounting configuration: the substitute uses DIN Rail mounting instead of Chassis Mount. This represents a functional substitution where the electrical and fuse compatibility remain identical, but the physical installation method differs to accommodate different system architectures.

Parameter Comparison

Engineering Selection Recommendations

The LFH600303PID is the designated substitute for the obsolete LH600303PR. Both components share identical electrical specifications (30 A, 600V, 3-circuit cartridge block configuration) and fuse compatibility. The LFH600303PID is currently in active production status with 847 units in stock, ensuring availability for replacement applications.

The LFH600303PID achieves ROHS3 compliance, whereas the original LH600303PR is RoHS non-compliant. For new system designs or upgrades requiring regulatory compliance, the LFH600303PID is the appropriate selection. The substitution requires evaluation of the mounting infrastructure: the LFH600303PID uses DIN Rail mounting, which may necessitate mechanical redesign if the original system was configured for chassis mount installation.

Frequently Asked Questions (FAQ)

Q: Can the LFH600303PID directly replace the LH600303PR in existing installations?

A: Electrical compatibility is complete. However, the mounting method differs: LH600303PR uses chassis mount while LFH600303PID uses DIN Rail. Physical installation modifications are required if the system framework is designed exclusively for chassis mount configuration.

Q: Are the fuse cartridges interchangeable between these two blocks?

A: Both blocks accept Class H(K) and Class R cartridge fuses at 30 A, 600V. Fuse cartridges are mechanically and electrically compatible between the two fuseholder blocks.

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

A: The LH600303PR is RoHS non-compliant, while the LFH600303PID is ROHS3 compliant. For applications subject to environmental or regulatory requirements, the LFH600303PID meets current compliance standards.

Q: Is the LFH600303PID available in the same packaging as the original?

A: The LFH600303PID is supplied in Box packaging. The original LH600303PR packaging specification was not provided in the available data.

Q: What is the inventory status for the substitute part?

A: The LFH600303PID has 847 units in stock as new original inventory, ensuring availability for immediate procurement.