CT-39 Equivalent & Substitute Parts Reference

Part Overview

The CT-39 is a 39-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 screw termination on the top side. The CT-39 is classified as obsolete, making identification of active equivalent parts essential for ongoing procurement and system maintenance.

Substiute Parts

CT-39

Curtis IndustriesIn Stock: 713CT-39 Datasheet

Current PartRFQ

CDM-39

Curtis IndustriesIn Stock: 1096CDM-39 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The CDM-39 qualifies as a direct substitute for the CT-39 based on the following critical parameters:

• Circuit Configuration: Both parts feature 39 circuits with 78 wire entries
• Electrical Specifications: Identical current rating (30A) and voltage rating (600V)
• Mechanical Compatibility: Matching pitch (0.546"), number of rows (2), and mounting type (Chassis, Panel)
• Termination Method: Both use screw-based top termination with closed bottom termination
• Barrier Construction: Dual-wall (2 Wall) barrier type on both parts
• Wire Gauge Compatibility: Both accept 10-22 AWG wire
• Environmental Ratings: Identical operating temperature (130°C), insulation material (Polyester Thermoplastic), and flammability rating (UL94 V-0)
• Regulatory Compliance: Both are RoHS compliant and REACH unaffected

The primary distinction is product status: CT-39 is obsolete while CDM-39 is active, making CDM-39 the recommended procurement choice for new applications and replacements.

Parameter Comparison

Engineering Selection Recommendations

The CDM-39 is the direct equivalent for the obsolete CT-39 terminal block. All electrical, mechanical, and environmental specifications are identical. The CDM-39 maintains active product status with Curtis Industries, ensuring continued availability and supply chain reliability. Both parts meet identical regulatory requirements including RoHS compliance and REACH unaffected status. The CDM-39 is suitable for direct replacement in existing applications and is the specified choice for new designs requiring a 39-circuit, 0.546" pitch barrier block connector with 30A/600V rating and screw termination.

Frequently Asked Questions (FAQ)

Q: Can CDM-39 be used as a direct replacement for CT-39? A: Yes. The CDM-39 is electrically and mechanically identical to the CT-39 across all specified parameters including circuit count, pitch, current/voltage ratings, termination method, and environmental specifications.

Q: What is the primary reason to transition from CT-39 to CDM-39? A: The CT-39 is classified as obsolete. The CDM-39 is an active product from the same manufacturer with identical specifications, ensuring long-term availability and supply chain continuity.

Q: Are there any differences in mounting or installation between these parts? A: No. Both parts feature identical mounting types (Chassis, Panel), pitch (0.546"), and physical configuration. Installation procedures remain unchanged.

Q: Do both parts meet the same regulatory and compliance standards? A: Yes. Both the CT-39 and CDM-39 are RoHS compliant, REACH unaffected, UL94 V-0 rated, and carry identical ECCN and HTSUS classifications.

Q: What wire gauges are compatible with the CDM-39? A: The CDM-39 accepts 10-22 AWG wire, matching the CT-39 specification.

Q: Is there a packaging difference between CT-39 and CDM-39? A: The CT-39 packaging is not specified in the available data. The CDM-39 is supplied in bulk packaging.