CDL4U/BU Terminal Block Equivalent & Substitute Parts

Part Overview

The CDL4U/BU is a feed-through terminal block connector manufactured by Altech Corporation, designed for 4-position dual-level applications with screw termination. This component is classified as obsolete, making identification of suitable substitutes necessary for ongoing system maintenance and new design implementations. The part accommodates wire gauges from 10-22 AWG (0.5-4mm²) and is rated for 35A at 600V under UL standards.

Substiute Parts

CDL4U/BU

Altech CorporationIn Stock: 994CDL4U/BU Datasheet

Current PartRFQ

CDL4UN/BU

Altech CorporationIn Stock: 1176CDL4UN/BU Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CDL4U/BU is determined by the following critical parameters:

• Electrical Compatibility: Current rating (UL: 35A minimum), voltage rating (UL: 600V minimum), and IEC ratings (32A, 400V minimum)
• Physical Compatibility: 4 positions, 2 levels, 6.0mm terminal width, screw termination style
• Wire Accommodation: Support for 10-22 AWG wire gauge range
• Material Specification: Polyamide (PA66) insulation material
• Mechanical Interface: 9mm stripping length, blue color designation

The CDL4UN/BU meets all substitution criteria within these parameters and is classified as an active product, providing continuity for applications currently using the obsolete CDL4U/BU.

Parameter Comparison

Engineering Selection Recommendations

The CDL4UN/BU is the direct substitute for the obsolete CDL4U/BU. Both components share identical electrical ratings under UL standards (35A, 600V) and IEC standards (32A, 400V minimum), matching physical dimensions, termination methodology, and wire gauge accommodation.

The CDL4UN/BU provides additional advantages: active product status ensures ongoing availability, ROHS3 compliance addresses regulatory requirements, and enhanced IEC voltage rating (800V versus 400V) provides operational margin. The expanded wire gauge range (0.2-4mm² versus 0.5-4mm²) accommodates additional conductor sizes while maintaining full compatibility with the original specification range.

Frequently Asked Questions (FAQ)

Q: Can CDL4UN/BU directly replace CDL4U/BU in existing applications?

A: Yes. Both components maintain identical UL electrical ratings (35A, 600V), IEC current rating (32A), physical configuration (4 positions, 2 levels, 6.0mm terminal width), screw termination, wire gauge range (10-22 AWG), and insulation material (PA66). Mechanical and electrical compatibility is confirmed.

Q: What is the difference in IEC voltage rating between these parts?

A: CDL4U/BU is rated 400V IEC, while CDL4UN/BU is rated 800V IEC. Both exceed the minimum IEC requirement of 400V. The CDL4UN/BU provides additional voltage margin for applications operating at elevated potentials within the 600V UL maximum.

Q: Does the expanded wire gauge range of CDL4UN/BU affect compatibility?

A: No. The CDL4UN/BU accommodates 0.2-4mm² (10-22 AWG), while CDL4U/BU accommodates 0.5-4mm². The substitute part supports the full original range plus additional smaller gauges, ensuring backward compatibility without performance degradation.

Q: What is the significance of ROHS3 compliance on CDL4UN/BU?

A: ROHS3 compliance indicates the substitute part meets current European Union Restriction of Hazardous Substances regulations. This certification is relevant for applications subject to environmental and regulatory compliance requirements.

Q: Are there packaging differences between these parts?

A: CDL4U/BU packaging is not specified. CDL4UN/BU is supplied in bulk packaging. Confirm packaging requirements with your procurement process.