CT-28 Equivalent & Substitute Parts Reference

Part Overview

The CT-28 is a 28-circuit barrier block connector manufactured by Curtis Industries, designed for chassis and panel mounting applications. This terminal block features a 0.546" (13.86mm) pitch with dual-wall barrier construction and supports wire gauges from 10-22 AWG at 30A per circuit and 600V system voltage.

The CT-28 carries an obsolete product status. Identifying equivalent substitute parts is necessary to maintain system compatibility and ensure continued availability for replacement, repair, and new installations where this connector type is specified.

Substiute Parts

CT-28

Curtis IndustriesIn Stock: 1067CT-28 Datasheet

Current PartRFQ

CDM-28

Curtis IndustriesIn Stock: 1047CDM-28 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CT-28 is determined by matching the following critical parameters:

• Number of circuits: 28
• Pitch spacing: 0.546" (13.86mm)
• Current rating: 30A minimum
• Voltage rating: 600V minimum
• Wire gauge compatibility: 10-22 AWG
• Top termination method: Screws
• Barrier type: 2 Wall (Dual)
• Mounting configuration: Chassis and Panel compatible
• Operating temperature: 130°C minimum
• Insulation material: Polyester Thermoplastic
• Flammability rating: UL94 V-0

The CDM-28 meets all these criteria and qualifies as a direct substitute for the CT-28.

Parameter Comparison

Engineering Selection Recommendations

The CDM-28 is the qualified substitute for the CT-28. Both parts are manufactured by Curtis Industries and share identical electrical and mechanical specifications across all critical parameters. The CDM-28 carries active product status, ensuring ongoing availability and supply chain continuity.

The CDM-28 maintains full compliance with RoHS3 and REACH requirements, meeting current regulatory standards. Both parts carry UL94 V-0 flammability certification and unlimited moisture sensitivity rating, confirming suitability for the same application environments.

Selection of the CDM-28 as a replacement for the obsolete CT-28 presents no electrical or mechanical compatibility concerns. The transition is direct and does not require circuit redesign or mechanical modification.

Frequently Asked Questions (FAQ)

Q: Can the CDM-28 be used as a direct replacement for the CT-28 in existing installations?

A: Yes. The CDM-28 matches all electrical and mechanical parameters of the CT-28, including circuit count, pitch spacing, current and voltage ratings, wire gauge compatibility, termination method, and mounting configuration. No modifications are required.

Q: Are there differences in compliance or certification between these parts?

A: Both parts meet UL94 V-0 flammability requirements and carry unlimited moisture sensitivity rating. The CDM-28 is certified to ROHS3 standard, while the CT-28 carries RoHS Compliant status. Both are REACH Unaffected and share identical ECCN and HTSUS classifications.

Q: What is the primary advantage of selecting the CDM-28?

A: The CDM-28 carries active product status, ensuring reliable supply availability. The CT-28 is obsolete and subject to inventory depletion. The CDM-28 provides equivalent functionality with assured long-term availability.

Q: Are there packaging differences between the CT-28 and CDM-28?

A: The CT-28 is supplied in standard packaging. The CDM-28 is supplied in bulk packaging. Both formats contain identical connector components with no functional differences.

Q: Do these parts share the same mounting footprint?

A: Yes. Both the CT-28 and CDM-28 are configured for chassis and panel mounting with identical pitch spacing (0.546"), row configuration (2 rows), and flange design. Mechanical interchangeability is confirmed.