CDL4U Terminal Block - Equivalent & Substitute Parts

Part Overview

The CDL4U is a feed-through terminal block connector manufactured by Altech Corporation, designed for double-level applications with a 35A rating. This component is classified as obsolete, which necessitates identification of functionally equivalent alternatives for ongoing system maintenance and new designs requiring compatible connectivity solutions.

Substiute Parts

CDL4U

Altech CorporationIn Stock: 829CDL4U Datasheet

Current PartRFQ

CDL4UN

AltechIn Stock: 1052CDL4UN Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

The CDL4UN serves as a direct functional equivalent to the CDL4U based on the following critical substitution parameters:

• Type: Feed-through terminal block configuration
• Number of Levels: Double level (2)
• Number of Positions: 4-position connector
• Current Rating: 35A (UL standard), 32A (IEC standard)
• Voltage Rating: 600V (UL), 800V (IEC)
• Termination Style: Screw-type connection
• Wire Gauge Compatibility: 10-22 AWG (0.2-4mm²)
• Material: Polyamide (PA66), Nylon 6/6 insulation
• Regulatory Compliance: ROHS3 Compliant, REACH Unaffected, EAR99 classification

The CDL4UN maintains electrical and mechanical compatibility with the obsolete CDL4U, enabling direct substitution in existing applications.

Parameter Comparison

Engineering Selection Recommendations

The CDL4UN is the appropriate substitute for the obsolete CDL4U based on the following factors:

• Product Status Alignment: The CDL4UN maintains active production status, ensuring long-term availability and supply chain continuity compared to the obsolete CDL4U.
• Regulatory Compliance: Both components share identical ECCN classification (EAR99) and moisture sensitivity ratings (MSL 1). The CDL4UN additionally provides ROHS3 compliance and REACH unaffected status, meeting current environmental and regulatory requirements.
• Electrical Specifications: The CDL4UN matches the 35A UL current rating of the CDL4U and provides equivalent voltage handling capability (600V UL / 800V IEC).
• Mechanical Compatibility: Feed-through configuration, double-level design, 4-position layout, and screw termination ensure direct mechanical and functional compatibility.

Frequently Asked Questions (FAQ)

Q: Can CDL4UN directly replace CDL4U in existing installations?

A: Yes. The CDL4UN provides equivalent electrical performance (35A UL rating, 600V UL voltage), identical double-level feed-through configuration, and compatible screw termination. Physical dimensions and connector positioning are compatible for direct substitution.

Q: What is the primary reason for substituting CDL4U?

A: The CDL4U is classified as obsolete, making it unavailable through standard distribution channels. The CDL4UN is an active product offering identical functional specifications with improved regulatory compliance.

Q: Are there packaging differences between CDL4U and CDL4UN?

A: The CDL4UN is supplied in box packaging. Original packaging specifications for CDL4U are not documented in available technical data.

Q: Do both components meet current environmental standards?

A: The CDL4UN meets ROHS3 compliance and REACH unaffected status. The CDL4U environmental compliance status is not specified in available documentation.

Q: What wire gauges are compatible with CDL4UN?

A: The CDL4UN accepts wire gauges from 10-22 AWG (0.2-4mm²) with a 9mm stripping length requirement.

Q: Are moisture sensitivity ratings identical?

A: Yes. Both CDL4U and CDL4UN carry MSL 1 (Unlimited) classification, indicating no moisture sensitivity restrictions for storage or handling.