CDL4U/O Terminal Block Feed-Through Connector

Part Overview

The CDL4U/O is a 4-position, 2-level feed-through terminal block connector manufactured by Altech Corporation, rated for 35A (UL) / 32A (IEC) at 600V (UL) / 400V (IEC). This component is classified as obsolete, making identification of compatible substitute parts essential for ongoing system maintenance and procurement planning. The feed-through design accommodates wire gauges from 10-22 AWG (0.2-4mm²) with screw termination and orange polyamide insulation.

Substiute Parts

CDL4U/O

Altech CorporationIn Stock: 1075CDL4U/O Datasheet

Current PartRFQ

CDL4UN/O

Altech CorporationIn Stock: 1077CDL4UN/O Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

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

• Mechanical Compatibility: Number of positions (4), number of levels (2), terminal width (6.0mm), and termination style (screw) must remain identical
• Electrical Ratings: Current and voltage ratings must meet or exceed the original specifications for both UL and IEC standards
• Wire Gauge Compatibility: Acceptable wire gauge range must encompass 10-22 AWG (0.2-4mm²)
• Physical Properties: Color, insulation material, and stripping length must match to ensure form-fit-function compatibility
• Connector Type: Feed-through configuration must be maintained

The CDL4UN/O satisfies all substitution criteria and is classified as an active product, providing a viable alternative to the obsolete CDL4U/O.

Parameter Comparison

Engineering Selection Recommendations

The CDL4UN/O is the direct substitute for the obsolete CDL4U/O. Both components share identical mechanical and electrical specifications across all critical parameters. The CDL4UN/O offers the additional advantage of active product status, ensuring continued availability and supply chain reliability. The CDL4UN/O carries ROHS3 compliance and REACH unaffected status, meeting current regulatory requirements for electronic component procurement. The IEC voltage rating of the CDL4UN/O (800V) exceeds the original specification (400V), providing enhanced electrical margin without compromising any other performance characteristic.

Frequently Asked Questions (FAQ)

Q: Can CDL4UN/O be used as a direct replacement for CDL4U/O in existing installations?

A: Yes. The CDL4UN/O maintains identical mechanical form-fit-function and electrical ratings across all critical parameters. The higher IEC voltage rating (800V vs. 400V) does not create compatibility issues and provides additional electrical margin.

Q: What is the significance of the product status change from Obsolete to Active?

A: Active product status indicates ongoing manufacturing and availability. This ensures reliable procurement for maintenance, repair, and new installations without supply chain interruption.

Q: Are there packaging differences between CDL4U/O and CDL4UN/O?

A: The CDL4U/O packaging is not specified in the available data. The CDL4UN/O is supplied in bulk packaging. Confirm packaging requirements with your procurement specifications.

Q: Do the RoHS and REACH compliance certifications of CDL4UN/O affect compatibility?

A: No. ROHS3 compliance and REACH unaffected status indicate adherence to current environmental and safety regulations. These certifications do not alter electrical or mechanical compatibility.

Q: What wire gauges are acceptable for both components?

A: Both CDL4U/O and CDL4UN/O accept wire gauges from 10-22 AWG (0.2-4mm²) with a stripping length of 9mm.