LPSJ301.Z Equivalent & Substitute Parts

Part Overview

The LPSJ301.Z is a cartridge fuse holder manufactured by Littelfuse Inc., rated for 30 A at 600V with single-circuit DIN rail mounting. This component is designed for use with Class J fuses and features screw terminal with pressure plate termination. The part is currently listed as obsolete, making identification of active equivalent models essential for procurement and system continuity.

Substiute Parts

LPSJ301.Z

Littelfuse Inc.In Stock: 1185LPSJ301.Z Datasheet

Current PartRFQ

LFPSJ301.Z

Littelfuse Inc.In Stock: 1132LFPSJ301.Z Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The LFPSJ301.Z qualifies as a direct equivalent to the LPSJ301.Z based on identical electrical and mechanical parameters. Substitution is valid when the following criteria are met:

Current rating of 30 A matches exactly. Voltage rating of 600V is identical. Fuse size specification of 0.813" Dia x 2.25" L (20.65mm x 57.15mm) is unchanged. Mounting configuration remains DIN rail. Termination style (screw terminal with pressure plate) is preserved. Compatibility with Class J fuses is maintained. Single-circuit configuration is consistent.

The primary distinction is product status: LPSJ301.Z is obsolete while LFPSJ301.Z is active, making the latter the recommended procurement choice for new installations and replacements.

Parameter Comparison

Engineering Selection Recommendations

The LFPSJ301.Z is the direct active equivalent for the obsolete LPSJ301.Z. Both components maintain identical electrical specifications (30 A, 600V), mechanical dimensions (0.813" Dia x 2.25" L), and functional characteristics. Both are ROHS3 compliant with MSL rating of 1, indicating equivalent environmental performance and regulatory standing.

For new designs and replacement applications, LFPSJ301.Z should be selected as the primary component due to active product status and continued manufacturer support. The obsolete status of LPSJ301.Z indicates discontinued production and potential supply constraints.

Frequently Asked Questions (FAQ)

Q: Can LFPSJ301.Z be used as a direct replacement for LPSJ301.Z? A: Yes. Both components share identical current rating (30 A), voltage rating (600V), fuse size (0.813" Dia x 2.25" L), mounting type (DIN rail), and termination style (screw terminal with pressure plate). Electrical and mechanical compatibility is complete.

Q: What is the primary reason to substitute LPSJ301.Z with LFPSJ301.Z? A: LPSJ301.Z is obsolete with discontinued production. LFPSJ301.Z is an active product with ongoing manufacturer support and availability, making it the appropriate choice for procurement.

Q: Are there packaging differences between these parts? A: LPSJ301.Z packaging is listed as unspecified. LFPSJ301.Z is packaged in boxes. This distinction does not affect electrical or mechanical compatibility.

Q: Do both parts comply with the same regulatory standards? A: Yes. Both LPSJ301.Z and LFPSJ301.Z are ROHS3 compliant with MSL rating of 1 (unlimited moisture sensitivity level). LFPSJ301.Z additionally carries REACH Unaffected status.

Q: What fuse types are compatible with these holders? A: Both holders are designed for use with Class J cartridge fuses rated at 30 A, 600V with dimensions of 0.813" Dia x 2.25" L (20.65mm x 57.15mm).