CT-40 Equivalent & Substitute Parts

Part Overview

The CT-40 is a 40-circuit barrier block connector manufactured by Curtis Industries, designed for chassis and panel mounting applications requiring high-current distribution. This terminal block 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-40 carries an obsolete product status. Identifying equivalent substitute parts is necessary to maintain system functionality and ensure continued availability for replacement, repair, and new installations where this connector type is specified.

Substiute Parts

CT-40

Curtis IndustriesIn Stock: 1116CT-40 Datasheet

Current PartRFQ

CDM-40

Curtis IndustriesIn Stock: 845CDM-40 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CT-40 is determined by strict equivalence across the following critical parameters:

• Number of circuits: 40
• Pitch spacing: 0.546" (13.86mm)
• Current rating: 30A minimum
• Voltage rating: 600V minimum
• Wire gauge compatibility: 10-22 AWG
• Terminal block type: Barrier block with dual-wall construction
• Top termination method: Screw termination
• Mounting configuration: Chassis and panel mounting capability
• Insulation material: Polyester thermoplastic
• Flammability rating: UL94 V-0

The CDM-40 meets all substitution criteria as a direct equivalent, maintaining identical electrical specifications, mechanical dimensions, and safety certifications while offering active product status.

Parameter Comparison

Engineering Selection Recommendations

The CDM-40 is a direct functional equivalent to the CT-40 for all electrical and mechanical applications. Both parts are manufactured by Curtis Industries and maintain identical specifications across all critical parameters including circuit count, pitch, current and voltage ratings, wire gauge compatibility, and termination methods.

The CDM-40 offers the advantage of active product status, ensuring continued availability and supply chain reliability. Both parts maintain equivalent compliance certifications including UL94 V-0 flammability rating, RoHS compliance, and REACH unaffected status. The CDM-40 carries ROHS3 compliance, representing current regulatory alignment.

Selection between these parts should be based on availability requirements and supply chain considerations. The CDM-40 is recommended for new designs and applications requiring long-term component availability.

Frequently Asked Questions (FAQ)

Q: Can the CDM-40 be used as a direct replacement for the CT-40 in existing installations?

A: Yes. The CDM-40 is a direct substitute for the CT-40. Both parts share identical electrical ratings (30A, 600V), mechanical dimensions (0.546" pitch, 40 circuits), wire gauge compatibility (10-22 AWG), and mounting configurations (chassis and panel). Physical dimensions and terminal spacing are equivalent, allowing direct substitution without circuit redesign or mechanical modification.

Q: What is the primary difference between the CT-40 and CDM-40?

A: The primary difference is product status. The CT-40 is obsolete, while the CDM-40 is active. Both parts are manufactured by Curtis Industries and maintain identical specifications. The CDM-40 represents the current production equivalent.

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

A: Both parts maintain equivalent safety and environmental compliance. The CT-40 carries RoHS compliance, while the CDM-40 carries ROHS3 compliance, reflecting current regulatory standards. Both maintain UL94 V-0 flammability rating, REACH unaffected status, and identical ECCN and HTSUS classifications.

Q: What packaging options are available?

A: The CT-40 is available in standard packaging. The CDM-40 is supplied in bulk packaging. Packaging format does not affect electrical or mechanical compatibility.

Q: Are the screw termination specifications identical between both parts?

A: Yes. Both the CT-40 and CDM-40 feature screw termination on the top with closed termination on the bottom. Wire gauge acceptance (10-22 AWG) and screw specifications are identical across both parts.