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

Part Overview

The CDL4U(I.S)/DB is a 4-position, 2-level feed-through terminal block manufactured by Altech Corporation, rated for 35 A (UL) / 32 A (IEC) at 600V (UL) / 400V (IEC). This component is classified as obsolete, making identification of active equivalent parts essential for ongoing procurement and system maintenance. The substitute part CDL4UN(I.S)/DB provides functional continuity with enhanced voltage rating and active product status.

Substiute Parts

CDL4U(I.S)/DB

Altech CorporationIn Stock: 799CDL4U(I.S)/DB Datasheet

Current PartRFQ

CDL4UN(I.S)/DB

Altech CorporationIn Stock: 874CDL4UN(I.S)/DB Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

The CDL4UN(I.S)/DB qualifies as a direct substitute based on the following critical parameters:

• Electrical Compatibility: Both parts maintain identical UL current rating (35 A) and voltage rating (600V), ensuring equivalent performance in existing circuits.
• Physical Compatibility: Matching 4-position, 2-level configuration with 6.0 mm terminal width and screw termination enables direct mechanical replacement.
• Wire Gauge Compatibility: Both accept 10-22 AWG conductors, with CDL4UN(I.S)/DB supporting an expanded lower range (0.2-4 mm² vs. 0.5-4 mm²).
• Material Consistency: Identical Polyamide (PA66) insulation material ensures thermal and chemical compatibility.
• Operational Parameters: Matching stripping length (9 mm) and brown color maintain installation consistency.

The primary distinction is product status: CDL4UN(I.S)/DB is active and RoHS3 compliant, whereas CDL4U(I.S)/DB is obsolete.

Parameter Comparison

Engineering Selection Recommendations

For new designs and ongoing procurement, CDL4UN(I.S)/DB is the appropriate selection. This part maintains full electrical and mechanical compatibility with CDL4U(I.S)/DB while offering active product status and RoHS3 compliance. The enhanced IEC voltage rating (800V vs. 400V) provides additional design margin without compromising any existing application requirements. Both parts share identical UL ratings, wire gauge acceptance, and physical dimensions, ensuring direct substitution in existing assemblies.

Frequently Asked Questions (FAQ)

Q: Can CDL4UN(I.S)/DB replace CDL4U(I.S)/DB in existing applications? A: Yes. Both parts maintain identical electrical ratings (35 A / 600V UL, 32 A / 400V IEC), physical configuration (4-position, 2-level, 6.0 mm terminals), and wire gauge acceptance (10-22 AWG). Direct mechanical and electrical substitution is supported.

Q: What is the difference in voltage ratings between the two parts? A: The IEC voltage rating differs: CDL4U(I.S)/DB is rated 400V IEC, while CDL4UN(I.S)/DB is rated 800V IEC. Both maintain identical 600V UL ratings. This represents an enhancement in the substitute part with no impact on existing applications.

Q: Does CDL4UN(I.S)/DB support the same wire gauge range? A: Both parts accept 10-22 AWG conductors. CDL4UN(I.S)/DB additionally supports a lower range starting at 0.2 mm² (versus 0.5 mm² for the original part), providing expanded compatibility with smaller gauge conductors.

Q: What is the significance of the obsolete status of CDL4U(I.S)/DB? A: Obsolete status indicates the part is no longer in active production. CDL4UN(I.S)/DB is the active equivalent, ensuring continued availability and support for new procurement and system maintenance.

Q: Are there compliance differences between these parts? A: CDL4UN(I.S)/DB carries RoHS3 compliance certification. Compliance status for CDL4U(I.S)/DB is not specified in available documentation. Both parts share identical ECCN (EAR99) and HTSUS (8536.90.4000) classifications.