Littelfuse 0LD55923Z Power Distribution Block - Equivalent & Substitute Parts

Part Overview

The Littelfuse 0LD55923Z is a 3-pole power distribution block rated for 760 A at 600 V, designed for industrial power distribution applications. This component features dual line-side connections per pole and twelve load-side connections per pole, accommodating wire sizes from 500 MCM on the line side to #14 on the load side.

The 0LD55923Z carries an obsolete product status. Identifying equivalent substitute parts is necessary to maintain system continuity and ensure procurement of functionally compatible components for new installations or maintenance applications.

Substiute Parts

0LD55923Z

Littelfuse Inc.In Stock: 11070LD55923Z Datasheet

Current PartRFQ

LFD55923Z

Littelfuse Inc.In Stock: 1041LFD55923Z Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 0LD55923Z is determined by strict equivalence across the following critical parameters:

• Electrical Performance: Voltage rating (600 V), current rating (760 A), and pole configuration (3-pole)
• Connection Architecture: Line-side connections per pole (2), load-side connections per pole (12), and wire/stud size compatibility (500 MCM line side, #4-#14 load side)
• Interface Type: Screw connection terminals on both line and load sides
• Regulatory Compliance: ROHS3 compliance and moisture sensitivity classification

The LFD55923Z meets all substitution criteria. While the 0LD55923Z belongs to the POWR-BLOKS® LD series and carries obsolete status, the LFD55923Z is part of the POWR-BLOKS® LF series and maintains active product status. Both components share identical electrical ratings, connection configurations, and wire size specifications.

Parameter Comparison

Engineering Selection Recommendations

The LFD55923Z is the direct substitute for the obsolete 0LD55923Z. Both components are manufactured by Littelfuse Inc. and maintain identical electrical specifications, connection configurations, and regulatory compliance certifications. The LFD55923Z carries active product status, ensuring continued availability and supply chain reliability.

Selection of the LFD55923Z is appropriate for applications requiring a 3-pole, 760 A, 600 V power distribution block with dual line-side connections and twelve load-side connections per pole. The component's ROHS3 compliance and unlimited moisture sensitivity rating support deployment in standard industrial environments.

Frequently Asked Questions (FAQ)

Q: Can the LFD55923Z directly replace the 0LD55923Z in existing installations?

A: Yes. The LFD55923Z provides functional equivalence across all critical parameters: voltage rating, current rating, pole configuration, connection count per pole, wire size compatibility, and connection type. Both components are ROHS3 compliant with identical moisture sensitivity classifications.

Q: What is the primary difference between the 0LD55923Z and LFD55923Z?

A: The 0LD55923Z belongs to the POWR-BLOKS® LD series and carries obsolete status. The LFD55923Z belongs to the POWR-BLOKS® LF series and maintains active product status. Electrical and mechanical specifications are identical.

Q: Are there packaging differences between these parts?

A: The 0LD55923Z packaging specification is not defined in available data. The LFD55923Z is supplied in box packaging. Verify packaging requirements for your specific application.

Q: What wire sizes are compatible with each connection side?

A: Line-side connections accommodate 500 MCM (kcmil) or #4 copper/aluminum conductors. Load-side connections accommodate wire sizes from #4 to #14 copper/aluminum conductors across all twelve connection points per pole.

Q: Are both parts suitable for 600 V applications?

A: Yes. Both the 0LD55923Z and LFD55923Z are rated for 600 V operation and carry ROHS3 compliance certification.