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

Part Overview

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

The obsolete status necessitates alternative part sourcing to ensure design continuity and system reliability in applications requiring equivalent electrical and mechanical specifications.

Substiute Parts

CDL4U(I.S)/BL

Altech CorporationIn Stock: 1149CDL4U(I.S)/BL Datasheet

Current PartRFQ

CDL4UN(I.S)/BL

Altech CorporationIn Stock: 1046CDL4UN(I.S)/BL Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

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

• Electrical Compatibility: Current rating (UL minimum 35 A), voltage rating (UL minimum 600V), and IEC ratings must meet or exceed the original specification
• Mechanical Compatibility: 4-position, 2-level configuration with 6.0 mm terminal width and screw termination
• Wire Gauge Compatibility: Support for 10-22 AWG (0.5-4 mm²) wire range
• Physical Form Factor: Feed-through terminal block type with black polyamide insulation
• Termination Interface: Screw-based wire termination method

The substitute part CDL4UN(I.S)/BL meets all critical substitution criteria while offering improved product status and compliance certifications.

Parameter Comparison

Engineering Selection Recommendations

The CDL4UN(I.S)/BL is a direct functional equivalent to the CDL4U(I.S)/BL with the following advantages:

• Active Product Status: The substitute maintains current manufacturing and support status, eliminating obsolescence risk
• Enhanced Compliance: ROHS3 compliance and REACH unaffected status provide regulatory alignment for modern applications
• Improved IEC Voltage Rating: 800V IEC rating provides additional margin over the original 400V specification
• Extended Wire Gauge Support: 0.2-4 mm² range accommodates smaller gauge conductors compared to the original 0.5-4 mm² specification

All critical electrical and mechanical parameters remain equivalent, ensuring direct substitution without design modification.

Frequently Asked Questions (FAQ)

Q: Can CDL4UN(I.S)/BL replace CDL4U(I.S)/BL in existing installations?

A: Yes. Both components share identical 4-position, 2-level configuration, 6.0 mm terminal width, screw termination, and UL ratings (35 A, 600V). Physical form factor and wire gauge compatibility (10-22 AWG) are equivalent.

Q: What is the significance of the higher IEC voltage rating on the substitute?

A: The CDL4UN(I.S)/BL provides 800V IEC rating compared to 400V on the original part. This represents increased voltage margin and does not affect compatibility in applications designed for the original 400V specification.

Q: Does the extended wire gauge range (0.2-4 mm²) on the substitute affect compatibility?

A: No. The substitute supports the full original range (0.5-4 mm²) plus additional smaller gauges. Applications using 10-22 AWG wire remain fully compatible.

Q: What packaging is available for the substitute part?

A: CDL4UN(I.S)/BL is supplied in bulk packaging, with 995 pieces currently in stock.

Q: Are there compliance differences between the two parts?

A: The substitute (CDL4UN(I.S)/BL) carries ROHS3 compliance and REACH unaffected status. The original part specifications do not include these certifications. Both parts carry EAR99 ECCN and 8536.90.4000 HTSUS classification.