LPSJ303.Z Equivalent & Substitute Parts

Part Overview

The LPSJ303.Z is a cartridge fuse holder manufactured by Littelfuse Inc., designed for Class J fuses with a 30 A current rating at 600V. This component is rated for 3-circuit DIN rail mounting applications and features screw terminal and pressure plate termination. The LPSJ303.Z is currently listed as obsolete, making identification of active equivalent parts essential for procurement and system continuity.

Substiute Parts

LPSJ303.Z

Littelfuse Inc.In Stock: 1064LPSJ303.Z Datasheet

Current PartRFQ

LFPSJ303.Z

Littelfuse Inc.In Stock: 851LFPSJ303.Z Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The LFPSJ303.Z qualifies as a direct substitute for the LPSJ303.Z based on identical electrical and mechanical parameters. Substitution is valid when the following criteria are met:

• Current rating: 30 A
• Voltage rating: 600V
• Fuse size: 0.813" Dia x 2.25" L (20.65mm x 57.15mm)
• Number of circuits: 3
• Mounting type: DIN Rail
• Termination style: Screw Terminal, Pressure Plate
• Fuse type: Cartridge (Class J)

The LFPSJ303.Z maintains all specified electrical and mechanical characteristics of the original part while offering active product status and current availability.

Parameter Comparison

Engineering Selection Recommendations

The LFPSJ303.Z is the direct equivalent for the obsolete LPSJ303.Z. Both parts are manufactured by Littelfuse Inc. and maintain identical electrical specifications (30 A, 600V), mechanical dimensions (0.813" Dia x 2.25" L), and functional characteristics for Class J cartridge fuse holder applications. The LFPSJ303.Z offers the advantage of active product status and current manufacturing support. Both parts maintain ROHS3 compliance and equivalent regulatory certifications (ECCN: EAR99, HTSUS: 8538.90.8180).

Frequently Asked Questions (FAQ)

Q: Can the LFPSJ303.Z be used as a direct replacement for the LPSJ303.Z?

A: Yes. The LFPSJ303.Z is a direct substitute. Both parts share identical current rating (30 A), voltage rating (600V), fuse size (0.813" Dia x 2.25" L), circuit count (3), mounting type (DIN Rail), and termination style (Screw Terminal, Pressure Plate).

Q: What is the primary difference between these two part numbers?

A: The LPSJ303.Z is obsolete, while the LFPSJ303.Z is an active product with current manufacturing support. The series designation differs (LPSJ vs. LFPSJ), but electrical and mechanical specifications remain identical.

Q: Are there packaging differences between the LPSJ303.Z and LFPSJ303.Z?

A: The LFPSJ303.Z is supplied in box packaging. Packaging specifications for the LPSJ303.Z were not provided in the technical data.

Q: Do both parts comply with RoHS requirements?

A: Yes. Both the LPSJ303.Z and LFPSJ303.Z are ROHS3 compliant. The LFPSJ303.Z additionally carries REACH Unaffected status.

Q: What Class J fuses are compatible with these holders?

A: Both holders are rated for Class J fuses with 30 A current rating and 600V voltage rating at the specified cartridge dimensions (0.813" Dia x 2.25" L).