LH250302PR Equivalent & Substitute Parts

Part Overview

The LH250302PR is a fuse block cartridge designed for 250V, 30A applications with 2-circuit configuration and chassis mount orientation. Manufactured by Littelfuse Inc., this component is classified as obsolete, making identification of suitable alternatives essential for ongoing system maintenance and new design implementations. The part accommodates Class H(K) and Class R cartridge fuses with screw terminal and pressure plate termination.

Substiute Parts

LH250302PR

Littelfuse Inc.In Stock: 1074LH250302PR Datasheet

Current PartRFQ

LFH250302P

Littelfuse Inc.In Stock: 739LFH250302P Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The LFH250302P qualifies as a direct substitute based on the following critical parameters that remain constant across both parts:

• Current Rating: 30 A (identical)
• Voltage Rating: 250V (identical)
• Number of Circuits: 2 (identical)
• Fuse Type: Cartridge (identical)
• Fuseholder Type: Block (identical)
• Termination Style: Screw Terminal, Pressure Plate (identical)
• Compatible Fuse Classes: Class H(K), Class R (identical)
• Manufacturer: Littelfuse Inc. (same manufacturer)

The primary difference between these parts is the mounting configuration: LH250302PR uses chassis mount, while LFH250302P uses DIN rail mount. This distinction affects physical installation but does not alter electrical compatibility or fuse holder functionality.

Parameter Comparison

Engineering Selection Recommendations

The LFH250302P represents the active equivalent for the obsolete LH250302PR. Both parts maintain identical electrical specifications: 30A current rating, 250V voltage rating, 2-circuit configuration, and cartridge fuse compatibility. The LFH250302P is currently in active production status with 635 units in stock, compared to the LH250302PR's obsolete status with 997 units remaining.

For new designs or system replacements, the LFH250302P is the appropriate selection. This part achieves ROHS3 compliance and REACH unaffected status, meeting modern regulatory requirements that the non-compliant LH250302PR does not satisfy. The substitution requires evaluation of mounting infrastructure: the LFH250302P requires DIN rail mounting capability, whereas the LH250302PR was designed for chassis mount applications.

Frequently Asked Questions (FAQ)

Q: Can LFH250302P directly replace LH250302PR in existing installations?

A: Electrical compatibility is complete. Both parts accept identical Class H(K) and Class R cartridge fuses and operate at 30A, 250V with 2-circuit configuration. Physical installation differs: LH250302PR mounts to chassis, while LFH250302P requires DIN rail mounting. Mechanical integration must be evaluated for your specific enclosure design.

Q: What are the key parameters that determine substitution eligibility?

A: Current rating (30A), voltage rating (250V), number of circuits (2), fuse type (cartridge), fuseholder type (block), and termination style (screw terminal with pressure plate) must remain constant. Both parts meet these criteria. Mounting type is the only variable parameter.

Q: Why is LH250302PR listed as obsolete?

A: The LH250302PR has been discontinued by Littelfuse Inc. The LFH250302P serves as the active production equivalent with identical electrical specifications and improved regulatory compliance.

Q: Does the RoHS compliance difference affect electrical performance?

A: RoHS compliance reflects manufacturing and material standards but does not alter electrical performance or fuse holder functionality. The ROHS3 compliance of LFH250302P indicates adherence to current environmental and safety regulations.

Q: Are there inventory considerations for this substitution?

A: LH250302PR has 997 units in stock as obsolete inventory. LFH250302P has 635 units in active stock. For new procurements, LFH250302P availability is subject to standard lead times as an active product.