CDL4U(I.S)/Y Terminal Block Equivalent & Substitute Parts

Part Overview

The CDL4U(I.S)/Y is a 4-position, 2-level feed-through terminal block connector manufactured by Altech Corporation, rated for 35A at 600V (UL) and 32A at 400V (IEC). This component is classified as obsolete, making identification of compatible substitutes essential for ongoing system maintenance and component procurement.

The primary reason for identifying substitute parts is the obsolete status of the original component. Active equivalent models with identical or superior electrical and mechanical specifications ensure design continuity and supply chain reliability.

Substiute Parts

CDL4U(I.S)/Y

Altech CorporationIn Stock: 928CDL4U(I.S)/Y Datasheet

Current PartRFQ

CDL4UN(I.S)/Y

Altech CorporationIn Stock: 740CDL4UN(I.S)/Y Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CDL4U(I.S)/Y is determined by the following critical parameters:

• Electrical Compatibility: Current and voltage ratings must meet or exceed the original specification (35A at 600V UL; 32A at 400V IEC)
• Physical Compatibility: 4-position, 2-level configuration with 6.0mm terminal width and screw termination
• Wire Gauge Compatibility: Support for 10-22 AWG (0.5-4mm²) wire range
• Mechanical Compatibility: Feed-through type with identical connector geometry and color coding (yellow)
• Material Specification: Polyamide (PA66) insulation material

The CDL4UN(I.S)/Y meets all substitution criteria and is classified as an active product, eliminating supply chain risk associated with obsolete components.

Parameter Comparison

Engineering Selection Recommendations

The CDL4UN(I.S)/Y is the direct substitute for the obsolete CDL4U(I.S)/Y. Selection is based on the following engineering criteria:

Electrical Equivalence: The substitute maintains identical UL ratings (35A at 600V) and IEC current rating (32A). The IEC voltage rating increases from 400V to 800V, providing enhanced voltage margin without compromising any application requirement.

Physical and Mechanical Compatibility: Both components share identical mechanical specifications, including 4-position, 2-level configuration, 6.0mm terminal width, screw termination, and yellow color coding. Direct mechanical interchange is confirmed.

Regulatory Compliance: The CDL4UN(I.S)/Y carries ROHS3 compliance and REACH unaffected status, meeting current environmental and regulatory requirements. The original part does not specify these certifications.

Supply Chain Status: The transition from obsolete to active product status eliminates long-term availability risk and ensures continued access to the component for future procurement cycles.

Frequently Asked Questions (FAQ)

Q: Can the CDL4UN(I.S)/Y be used as a direct replacement for the CDL4U(I.S)/Y?

A: Yes. Both components are manufactured by Altech Corporation with identical electrical ratings (35A at 600V UL; 32A at 400V IEC), physical dimensions (4-position, 2-level, 6.0mm terminal width), and mechanical specifications (screw termination, feed-through type). Direct substitution is confirmed.

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

A: The IEC voltage rating differs: CDL4U(I.S)/Y is rated at 400V IEC, while CDL4UN(I.S)/Y is rated at 800V IEC. This represents an enhancement in the substitute part and does not restrict its use in applications designed for the original component.

Q: Are there differences in wire gauge compatibility?

A: Both components support 10-22 AWG wire gauge. The substitute part extends the lower range to 0.2mm² compared to the original 0.5mm² minimum, providing additional flexibility for smaller gauge applications while maintaining full compatibility with the original specification range.

Q: What packaging is available for the substitute part?

A: The CDL4UN(I.S)/Y is supplied in bulk packaging, compared to the original part which does not specify packaging type.

Q: Does the substitute part meet current regulatory standards?

A: Yes. The CDL4UN(I.S)/Y is ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements applicable to electronic components.