CT-23 Equivalent & Substitute Parts Reference

Part Overview

The CT-23 is a 23-circuit barrier block connector manufactured by Curtis Industries, designed for chassis and panel mounting applications. This terminal block features dual-wall barrier construction with screw termination on the top and closed termination on the bottom. The part operates at 600V with a 30A current rating and accommodates wire gauges from 10-22 AWG.

The CT-23 is classified as obsolete. Identifying equivalent substitute parts is necessary to maintain system compatibility and ensure continued availability for replacement and maintenance applications.

Substiute Parts

CT-23

Curtis IndustriesIn Stock: 994CT-23 Datasheet

Current PartRFQ

CDM-23

Curtis IndustriesIn Stock: 1209CDM-23 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The CDM-23 qualifies as a direct substitute for the CT-23 based on the following critical parameters:

• Number of Circuits: 23 (identical)
• Pitch: 0.546" (13.86mm) (identical)
• Number of Rows: 2 (identical)
• Current Rating: 30A (identical)
• Voltage Rating: 600V (identical)
• Wire Gauge: 10-22 AWG (identical)
• Top Termination: Screws (identical)
• Barrier Type: 2 Wall (Dual) (identical)
• Operating Temperature: 130°C (identical)
• Material - Insulation: Polyester Thermoplastic (identical)
• Flammability Rating: UL94 V-0 (identical)
• Mounting Type: Chassis, Panel (identical)

The CDM-23 maintains full electrical and mechanical compatibility with the CT-23 across all specified parameters. The primary distinction is product status: the CDM-23 is active and currently available, whereas the CT-23 is obsolete.

Parameter Comparison

Engineering Selection Recommendations

The CDM-23 is the appropriate substitute for the CT-23 in all applications where the original part was specified. Both parts meet identical electrical and mechanical requirements and share the same physical form factor.

The CDM-23 offers the advantage of active product status with current manufacturing support and availability. The CDM-23 carries ROHS3 compliance, representing an updated regulatory certification compared to the CT-23's RoHS Compliant designation. Both parts maintain REACH Unaffected status and identical moisture sensitivity levels.

Selection of the CDM-23 eliminates obsolescence risk while maintaining full compatibility with existing designs and installations.

Frequently Asked Questions (FAQ)

Q: Can the CDM-23 be used as a direct replacement for the CT-23?

A: Yes. The CDM-23 is electrically and mechanically identical to the CT-23 across all specified parameters, including circuit count, pitch, current rating, voltage rating, wire gauge compatibility, termination type, and operating temperature. Direct substitution is appropriate.

Q: What is the primary reason to transition from CT-23 to CDM-23?

A: The CT-23 is obsolete and no longer manufactured. The CDM-23 is an active product from the same manufacturer with identical specifications, ensuring continued availability for replacement and new applications.

Q: Are there any compliance differences between the two parts?

A: Both parts are REACH Unaffected and maintain MSL 1 (Unlimited) moisture sensitivity levels. The CDM-23 carries ROHS3 Compliant certification, while the CT-23 carries RoHS Compliant certification. Both meet UL94 V-0 flammability requirements.

Q: Will the CDM-23 fit in existing CT-23 mounting locations?

A: Yes. Both parts share identical pitch (0.546"), row configuration (2 rows), and mounting type (Chassis, Panel), ensuring mechanical compatibility with existing installations.

Q: Are there packaging differences between CT-23 and CDM-23?

A: The CT-23 is available in standard packaging, while the CDM-23 is supplied in bulk packaging. This does not affect electrical or mechanical performance.