LR250301PR Equivalent & Substitute Parts

Part Overview

The LR250301PR is a chassis-mounted fuse holder manufactured by Littelfuse Inc., rated for 30 A at 250V with support for Class R cartridge fuses. This component is designed for single-circuit applications requiring screw terminal and pressure plate termination. The part is currently obsolete, making identification of compatible alternatives essential for system maintenance and component replacement in existing installations.

Substiute Parts

LR250301PR

Littelfuse Inc.In Stock: 965LR250301PR Datasheet

Current PartRFQ

LFR250301P

Littelfuse Inc.In Stock: 834LFR250301P Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The LFR250301P qualifies as a direct substitute based on the following critical parameters:

• Current Rating: 30 A (identical)
• Voltage Rating: 250V (identical)
• Fuse Type: Cartridge (identical)
• Fuse Size: 0.563" Dia x 2" L (14.3mm x 50.8mm) (identical)
• Number of Circuits: 1 (identical)
• Termination Style: Screw Terminal, Pressure Plate (identical)
• Fuse Class: Class R (identical)
• Moisture Sensitivity Level: 1 (Unlimited) (identical)

The primary difference between these parts is the mounting configuration: the LR250301PR uses chassis mount, while the LFR250301P uses DIN rail mount. This distinction affects physical installation but does not alter electrical compatibility or fuse accommodation specifications.

Parameter Comparison

Engineering Selection Recommendations

The LFR250301P is the direct electrical and mechanical equivalent to the LR250301PR. Both components accommodate identical fuse specifications (30 A, 250V, Class R cartridge fuses at 0.563" Dia x 2" L dimensions) and employ identical termination methods.

Selection between these parts depends on installation requirements:

• If chassis-mount configuration is mandatory, the LR250301PR remains the only option, though availability is limited due to obsolete status.
• If DIN rail mounting is compatible with system design, the LFR250301P is preferred due to active product status and ROHS3 compliance, providing superior long-term availability and regulatory alignment.

Both parts share identical electrical ratings and fuse accommodation specifications, ensuring functional interchangeability in applications where mounting method can be adapted.

Frequently Asked Questions (FAQ)

Q: Can the LFR250301P replace the LR250301PR in all applications?

A: Electrical and fuse accommodation specifications are identical. Substitution is feasible if the installation can accommodate DIN rail mounting instead of chassis mounting. Physical installation method differs, but electrical performance and fuse compatibility remain unchanged.

Q: What fuse types are compatible with both holders?

A: Both the LR250301PR and LFR250301P are designed for Class R cartridge fuses rated 30 A at 250V with dimensions 0.563" Dia x 2" L (14.3mm x 50.8mm).

Q: Does the RoHS compliance difference affect electrical performance?

A: RoHS compliance reflects manufacturing and material standards but does not alter electrical specifications or fuse accommodation. The ROHS3 compliance of the LFR250301P indicates adherence to current environmental regulations.

Q: Are the termination methods identical?

A: Yes. Both parts use screw terminal and pressure plate termination, ensuring identical connection methods and electrical interface requirements.

Q: What is the availability status of each part?

A: The LR250301PR is obsolete with limited stock. The LFR250301P is active production with established availability, making it the preferred choice for new installations and ongoing supply requirements.