CT-18 Equivalent & Substitute Parts

Part Overview

The CT-18 is an 18-circuit barrier block connector manufactured by Curtis Industries, designed for chassis and panel mounting applications requiring secure wire termination. This component features dual-wall barrier construction with screw termination, rated for 30A at 600V, and accommodates wire gauges from 10-22 AWG.

The CT-18 carries an Obsolete product status. Identifying equivalent substitute parts ensures continued availability for maintenance, repair, and legacy system support where original components are no longer in production.

Substiute Parts

CT-18

Curtis IndustriesIn Stock: 744CT-18 Datasheet

Current PartRFQ

CDM-18

Curtis IndustriesIn Stock: 837CDM-18 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The CDM-18 qualifies as a direct substitute for the CT-18 based on the following critical parameters:

• Electrical Compatibility: Identical current rating (30A), voltage rating (600V), and wire gauge range (10-22 AWG)
• Physical Compatibility: Matching circuit count (18), pitch (0.546"/13.86mm), number of rows (2), and mounting type (Chassis, Panel)
• Mechanical Compatibility: Identical termination method (screw top, closed bottom), barrier construction (2 Wall/Dual), and features (Flange, Marking Strip)
• Environmental Compliance: Equivalent operating temperature (130°C), insulation material (Polyester Thermoplastic), and flammability rating (UL94 V-0)
• Regulatory Alignment: Both components maintain RoHS compliance and REACH unaffected status

The CDM-18 represents an active product from the same manufacturer, providing continuity for applications previously specified with the obsolete CT-18.

Parameter Comparison

Engineering Selection Recommendations

The CDM-18 is the appropriate substitute for the obsolete CT-18 in all applications where the CT-18 was previously specified. Both components share identical electrical and mechanical specifications, ensuring direct functional equivalence.

The CDM-18 carries Active product status, guaranteeing ongoing availability and supply chain continuity. The upgrade from RoHS Compliant to ROHS3 Compliant on the CDM-18 reflects current regulatory standards and provides enhanced environmental compliance for new designs and legacy system replacements.

Both components maintain UL94 V-0 flammability certification and REACH unaffected status, confirming suitability for regulated applications without additional qualification requirements.

Frequently Asked Questions (FAQ)

Q: Can the CDM-18 be used as a direct replacement for the CT-18?

A: Yes. The CDM-18 meets all electrical, mechanical, and environmental specifications of the CT-18. Identical circuit count, pitch, current rating, voltage rating, wire gauge range, termination method, and mounting configuration ensure direct compatibility.

Q: What is the primary difference between the CT-18 and CDM-18?

A: The CT-18 is obsolete, while the CDM-18 is an active product. The CDM-18 also carries ROHS3 Compliant status compared to the CT-18's RoHS Compliant designation. All functional and electrical parameters remain identical.

Q: Are there any packaging differences between these parts?

A: The CT-18 packaging specification is not provided. The CDM-18 is supplied in Bulk packaging. Confirm packaging requirements for your application before procurement.

Q: Do both parts support the same wire gauge range?

A: Yes. Both the CT-18 and CDM-18 accommodate wire gauges from 10-22 AWG, ensuring compatibility with existing wiring specifications.

Q: Are both components suitable for high-temperature applications?

A: Yes. Both parts maintain a 130°C operating temperature rating and use Polyester Thermoplastic insulation with UL94 V-0 flammability certification, confirming suitability for thermal demanding environments.

Q: What is the current and voltage rating for these barrier block connectors?

A: Both the CT-18 and CDM-18 are rated for 30A at 600V, meeting industrial and commercial power distribution requirements.