CDL4U/DB Terminal Block Connector - Equivalent & Substitute Parts

Part Overview

The CDL4U/DB is a feed-through terminal block connector manufactured by Altech Corporation, designed for 4-position, dual-level electrical connections with screw termination. This component is rated for 35A (UL) / 32A (IEC) at 600V (UL) / 400V (IEC) and accommodates wire gauges from 10-22 AWG (0.5-4mm²). The product is currently classified as obsolete, making identification of compatible substitute parts essential for ongoing system maintenance and component procurement.

Substiute Parts

CDL4U/DB

Altech CorporationIn Stock: 920CDL4U/DB Datasheet

Current PartRFQ

CDL4UN/DB

Altech CorporationIn Stock: 874CDL4UN/DB Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

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

• Electrical Compatibility: Current and voltage ratings must meet or exceed the original specification (35A UL / 32A IEC; 600V UL / 400V IEC)
• Physical Configuration: Number of positions (4), number of levels (2), terminal width (6.0mm), and termination style (screw) must remain identical
• Wire Gauge Compatibility: Wire gauge range must accommodate the original specification (10-22 AWG / 0.5-4mm²)
• Mechanical Fit: Color and insulation material must match for form-fit-function equivalence
• Connector Type: Feed-through topology must be preserved

The CDL4UN/DB meets all substitution criteria as an active product from the same manufacturer with identical mechanical and electrical specifications.

Parameter Comparison

Engineering Selection Recommendations

The CDL4UN/DB is a direct functional equivalent to the obsolete CDL4U/DB. Both components share identical mechanical dimensions, position count, termination method, and primary electrical ratings. The CDL4UN/DB offers the following advantages for procurement:

• Active Product Status: The CDL4UN/DB is currently in active production, ensuring long-term availability and supply chain continuity
• Enhanced IEC Voltage Rating: The substitute provides 800V IEC rating compared to 400V IEC on the original, offering additional safety margin in IEC-compliant applications
• Expanded Wire Gauge Compatibility: The CDL4UN/DB accommodates wire gauges down to 0.2mm² (versus 0.5mm² minimum on the original), providing flexibility for smaller conductor applications
• Regulatory Compliance: The CDL4UN/DB is ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements

For applications requiring the exact original specifications, the CDL4UN/DB operates within all original electrical and mechanical parameters while providing enhanced performance margins.

Frequently Asked Questions (FAQ)

Q: Can the CDL4UN/DB be used as a direct replacement for the CDL4U/DB?

A: Yes. Both components are 4-position, dual-level feed-through terminal blocks with 6.0mm terminal width, screw termination, and identical current ratings (35A UL / 32A IEC). All mechanical and primary electrical specifications are equivalent.

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

A: The CDL4U/DB is rated 400V IEC, while the CDL4UN/DB is rated 800V IEC. Both maintain 600V UL rating. The higher IEC voltage rating on the substitute provides additional safety margin for IEC-compliant circuit designs.

Q: Are there wire gauge compatibility differences?

A: The CDL4U/DB accommodates 10-22 AWG (0.5-4mm²). The CDL4UN/DB accommodates 10-22 AWG (0.2-4mm²). The substitute accepts smaller conductors down to 0.2mm², making it suitable for a broader range of wire sizes while maintaining full compatibility with the original specification range.

Q: What packaging options are available?

A: The CDL4U/DB was supplied in standard packaging (product status obsolete). The CDL4UN/DB is available in bulk packaging as an active product.

Q: Are both parts from the same manufacturer?

A: Yes. Both the CDL4U/DB and CDL4UN/DB are manufactured by Altech Corporation, ensuring consistent design and quality standards.

Q: Does the CDL4UN/DB meet current regulatory requirements?

A: Yes. The CDL4UN/DB is ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory standards for electronic components.