Littelfuse 0LD55793Z Power Distribution Block - Equivalent & Substitute Parts

Part Overview

The Littelfuse 0LD55793Z is a 3-pole power distribution block rated for 380 A at 600 V, designed for industrial power distribution applications. This component features screw connections on both line and load sides, with capacity for multiple load-side connections per pole. The part is classified as obsolete, making identification of active equivalent models essential for procurement and system continuity.

Substiute Parts

0LD55793Z

Littelfuse Inc.In Stock: 7000LD55793Z Datasheet

Current PartRFQ

LFD55793Z

LittelfuseIn Stock: 1077LFD55793Z Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 0LD55793Z is determined by strict equivalence across the following critical parameters:

• Electrical Ratings: Voltage (600 V) and current capacity (380 A) must match exactly
• Pole Configuration: 3-pole architecture is mandatory
• Connection Architecture: Line side (1 connection per pole) and load side (6 connections per pole) must be identical
• Connection Type: Screw connections on both line and load sides
• Wire/Stud Size Compatibility: Line side 500MCM (#4CU/AL) and load side 2/0 - #14CU/AL ranges must be maintained
• Compliance: RoHS3 compliance and MSL rating must be equivalent or superior

The LFD55793Z meets all substitution criteria as an active equivalent within the POWR-BLOKS® family.

Parameter Comparison

Engineering Selection Recommendations

The LFD55793Z is the designated active equivalent for the obsolete 0LD55793Z. Both components maintain identical electrical specifications, mechanical configurations, and compliance certifications. The LFD55793Z carries active product status with current manufacturing support and availability. Both parts are ROHS3 compliant and share equivalent ECCN and HTSUS classifications, ensuring regulatory consistency in procurement and deployment.

Frequently Asked Questions (FAQ)

Q: Can the LFD55793Z directly replace the 0LD55793Z in existing installations?

A: Yes. The LFD55793Z is electrically and mechanically equivalent to the 0LD55793Z across all specified parameters, including voltage rating (600 V), current capacity (380 A), pole configuration (3-pole), connection types (screw), and wire/stud size ranges. Both components are ROHS3 compliant with identical MSL ratings.

Q: What is the primary difference between the 0LD55793Z and LFD55793Z?

A: The primary difference is product status. The 0LD55793Z is obsolete, while the LFD55793Z is active. Both belong to the Littelfuse POWR-BLOKS® family but represent different series designations (LD versus LF). All functional and electrical parameters remain identical.

Q: Are there packaging differences between these parts?

A: The LFD55793Z is supplied in box packaging. Packaging format does not affect electrical or mechanical compatibility for terminal block applications.

Q: Do both parts meet the same compliance standards?

A: Yes. Both the 0LD55793Z and LFD55793Z are ROHS3 compliant, carry MSL rating 1 (Unlimited), and share identical ECCN (EAR99) and HTSUS (8538.90.8180) classifications.

Q: What connection configurations are supported?

A: Both parts support identical connection architectures: single screw connection per pole on the line side and six screw connections per pole on the load side. Wire/stud size ranges are 500MCM (#4CU/AL) for line side and 2/0 - #14CU/AL for load side.