CT-22 Equivalent & Substitute Parts Reference

Part Overview

The CT-22 is a 22-circuit barrier block connector manufactured by Curtis Industries, designed for chassis and panel mounting applications requiring high-density terminal connections. This component features dual-wall barrier construction with screw termination on top and closed termination on the bottom, rated for 30A at 600V with wire gauge compatibility from 10-22 AWG.

The CT-22 is classified as obsolete. Identifying equivalent substitute parts is necessary to maintain system functionality and ensure continued availability for applications currently utilizing this connector in production or maintenance scenarios.

Substiute Parts

CT-22

Curtis IndustriesIn Stock: 1049CT-22 Datasheet

Current PartRFQ

CDM-22

Curtis IndustriesIn Stock: 1031CDM-22 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CT-22 is determined by strict equivalence across the following critical parameters:

• Terminal block type (Barrier Block)
• Circuit count (22 circuits)
• Pitch spacing (0.546" / 13.86mm)
• Row configuration (2 rows)
• Electrical ratings (30A, 600V)
• Wire gauge range (10-22 AWG)
• Termination method (Screw top, closed bottom)
• Barrier construction (2 Wall / Dual)
• Insulation material (Polyester Thermoplastic)
• Flammability compliance (UL94 V-0)
• Mounting capability (Chassis, Panel)
• Operating temperature (130°C)

The CDM-22 meets all these criteria and qualifies as a direct substitute. The primary distinction is product status: CT-22 is obsolete while CDM-22 is active, and packaging differs (CT-22 standard vs. CDM-22 bulk).

Parameter Comparison

Engineering Selection Recommendations

The CDM-22 is the qualified substitute for the obsolete CT-22. Both components are manufactured by Curtis Industries and maintain identical electrical, mechanical, and thermal specifications across all critical parameters.

The CDM-22 offers the advantage of active product status, ensuring ongoing availability and supply chain continuity. Compliance certifications are equivalent: both meet UL94 V-0 flammability requirements, maintain unlimited moisture sensitivity rating (MSL 1), and are REACH unaffected. The CDM-22 carries ROHS3 compliance compared to the CT-22's RoHS compliance, representing an advancement in regulatory alignment.

Packaging differs between the two parts: CT-22 is supplied in standard packaging while CDM-22 is supplied in bulk packaging. This distinction does not affect functional or electrical compatibility.

Frequently Asked Questions (FAQ)

Q: Can CDM-22 be used as a direct replacement for CT-22 in existing applications?

A: Yes. The CDM-22 meets all electrical, mechanical, and thermal specifications of the CT-22. Both components share identical circuit count (22), pitch spacing (0.546"), current rating (30A), voltage rating (600V), wire gauge compatibility (10-22 AWG), barrier construction (2 Wall), and operating temperature (130°C).

Q: What is the primary reason to transition from CT-22 to CDM-22?

A: The CT-22 is classified as obsolete. The CDM-22 is an active product from the same manufacturer, ensuring continued supply availability and support.

Q: Are there any compliance differences between CT-22 and CDM-22?

A: Both components meet UL94 V-0 flammability requirements and maintain MSL 1 (unlimited moisture sensitivity). The CDM-22 carries ROHS3 compliance versus the CT-22's RoHS compliance. Both are REACH unaffected and classified under ECCN EAR99.

Q: Does packaging affect the substitution decision?

A: Packaging format (standard vs. bulk) does not affect functional compatibility. The choice between CT-22 standard packaging and CDM-22 bulk packaging depends on procurement and inventory requirements rather than technical performance.

Q: Are the mechanical dimensions identical between CT-22 and CDM-22?

A: Yes. Both components feature identical pitch spacing (0.546" / 13.86mm), row configuration (2 rows), circuit count (22), and mounting type (chassis and panel). Physical dimensions and mounting interfaces are equivalent.