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

Part Overview

The CDL4U(I.S)/R is a 4-position, 2-level feed-through terminal block connector manufactured by Altech Corporation, rated for 35 A (UL) at 600V and 32 A (IEC) at 400V. This component is classified as obsolete, making identification of compatible substitute parts essential for ongoing system maintenance and new design implementations. The screw termination style accommodates wire gauges from 10-22 AWG (0.5-4mm²), with polyamide insulation and red color coding for circuit identification.

Key Parameters

Parameter	Value
Manufacturer Part Number	CDL4U(I.S)/R
Manufacturer	Altech Corporation
Category	Terminal Blocks
Type	Feed Through
Number of Positions	4
Number of Levels	2
Terminal Width	6.0mm
Termination Style	Screw
Current Rating (UL)	35 A
Voltage Rating (UL)	600V
Current Rating (IEC)	32 A
Voltage Rating (IEC)	400V
Wire Gauge Range (AWG)	10-22 AWG
Wire Gauge Range (mm²)	0.5-4mm²
Insulation Material	Polyamide (PA66), Nylon 6/6
Color	Red
Stripping Length	9mm
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution eligibility for the CDL4U(I.S)/R is determined by strict alignment of the following critical parameters:

Connector Configuration: 4 positions, 2 levels, feed-through type
Termination Method: Screw termination
Terminal Geometry: 6.0mm terminal width
Electrical Ratings: Current and voltage ratings must meet or exceed UL 35 A / 600V and IEC 32 A / 400V
Wire Compatibility: Support for 10-22 AWG (0.5-4mm²) wire gauge range
Insulation Material: Polyamide (PA66) / Nylon 6/6
Physical Identification: Red color coding

The CDL4UN(I.S)/R qualifies as a direct substitute based on matching all critical parameters while offering enhanced specifications in certain areas.

Parameter Comparison

Parameter	CDL4U(I.S)/R (Main Part)	CDL4UN(I.S)/R (Substitute)	Compatibility
Manufacturer	Altech Corporation	Altech Corporation	Match
Number of Positions	4	4	Match
Number of Levels	2	2	Match
Type	Feed Through	Feed Through	Match
Terminal Width	6.0mm	6.0mm	Match
Termination Style	Screw	Screw	Match
Current Rating (UL)	35 A	35 A	Match
Voltage Rating (UL)	600V	600V	Match
Current Rating (IEC)	32 A	32 A	Match
Voltage Rating (IEC)	400V	800V	Substitute Exceeds
Wire Gauge Range (AWG)	10-22 AWG	10-22 AWG	Match
Wire Gauge Range (mm²)	0.5-4mm²	0.2-4mm²	Substitute Exceeds
Insulation Material	Polyamide (PA66), Nylon 6/6	Polyamide (PA66), Nylon 6/6	Match
Color	Red	Red	Match
Stripping Length	9mm	9mm	Match
Product Status	Obsolete	Active	Substitute Active

Engineering Selection Recommendations

The CDL4UN(I.S)/R is a qualified substitute for the obsolete CDL4U(I.S)/R based on the following engineering criteria:

Electrical Compatibility: The substitute part maintains identical UL ratings (35 A / 600V) and IEC current rating (32 A) while providing enhanced IEC voltage rating (800V versus 400V). This represents a performance improvement with no degradation of the original specifications.

Mechanical Compatibility: All physical parameters—position count, level configuration, terminal width, and termination method—are identical, ensuring direct mechanical interchangeability in existing mounting and wiring configurations.

Material and Environmental Compliance: Both parts utilize identical polyamide insulation material and maintain the same stripping length requirement (9mm). The substitute part carries RoHS3 compliance and REACH unaffected status, meeting current regulatory requirements.

Product Status Advantage: The CDL4UN(I.S)/R is classified as active product status with confirmed inventory availability (970 pcs), whereas the original part is obsolete. This ensures long-term supply chain viability and continued technical support.

Wire Gauge Enhancement: The substitute accommodates wire gauges from 0.2-4mm² compared to the original 0.5-4mm², providing expanded compatibility with smaller gauge conductors while maintaining full support for the original range.

Frequently Asked Questions (FAQ)

Q: Can the CDL4UN(I.S)/R be used as a direct replacement for CDL4U(I.S)/R in existing installations?

A: Yes. The substitute part matches all critical electrical and mechanical parameters. Identical terminal width (6.0mm), position count (4), level configuration (2), and termination method (screw) ensure direct interchangeability. The enhanced IEC voltage rating (800V) and expanded wire gauge support (0.2-4mm²) present no compatibility issues.

Q: What are the key differences between these two parts?

A: The primary differences are product status and enhanced specifications. The CDL4UN(I.S)/R is active product with current manufacturing, while CDL4U(I.S)/R is obsolete. The substitute provides higher IEC voltage rating (800V versus 400V) and supports smaller wire gauges (0.2mm² minimum versus 0.5mm² minimum). All other parameters are identical.

Q: Are there packaging differences between these parts?

A: Yes. The CDL4U(I.S)/R is supplied in standard packaging, while the CDL4UN(I.S)/R is supplied in bulk packaging. This difference does not affect electrical or mechanical performance, only order quantity and handling considerations.

Q: What wire gauges are compatible with each part?

A: Both parts support 10-22 AWG wire gauges. The CDL4U(I.S)/R accommodates 0.5-4mm² cross-section, while the CDL4UN(I.S)/R accommodates 0.2-4mm² cross-section. The substitute's expanded lower range does not affect compatibility with the original specification range.

Q: Are both parts compliant with current regulatory standards?

A: The CDL4UN(I.S)/R carries RoHS3 compliance and REACH unaffected status. Both parts share identical insulation material (Polyamide PA66/Nylon 6/6) and ECCN classification (EAR99). The substitute meets current regulatory requirements for new designs and replacements.

Q: What is the stripping length requirement for wire preparation?

A: Both parts require 9mm stripping length for proper wire termination. This specification is identical between the main part and substitute.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message