A20740407CARC Equivalent & Substitute Parts

Part Overview

The A20740407CARC is a 4-circuit barrier block connector manufactured by Eaton - Electronics Division. This terminal block features a 0.375" (9.53mm) pitch with screw termination on the top and PC pin insulated termination on the bottom. The component is classified as obsolete, making identification of equivalent substitute parts essential for ongoing maintenance, repair, and system continuity in applications requiring barrier strip connectors with these electrical and mechanical specifications.

Substiute Parts

A20740407CARC

Eaton - Electronics DivisionIn Stock: 742A20740407CARC Datasheet

Current PartRFQ

T38368-04-0

Curtis IndustriesIn Stock: 999T38368-04-0 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the A20740407CARC is determined by the following critical parameters that must align between the main part and substitute candidates:

Primary Matching Criteria:

• Terminal block type classification as barrier block
• 4-circuit configuration
• 0.375" (9.53mm) pitch spacing
• Dual wall (2 Wall) barrier type
• Screw termination method on top connection
• Wire gauge acceptance range of 12-22 AWG
• Voltage rating of 300V or higher
• UL94 V-0 flammability rating

Secondary Considerations:

• Current rating (substitute must meet or exceed application requirements)
• Operating temperature range compatibility
• Insulation material compatibility with application environment
• Mounting type and mechanical fit

The Curtis Industries T38368-04-0 qualifies as a substitute based on matching the primary criteria of barrier block type, 4-circuit configuration, 0.375" pitch, dual wall barrier construction, screw termination, wire gauge range, voltage rating, and UL94 V-0 certification.

Parameter Comparison

Engineering Selection Recommendations

Substitution Feasibility:

The T38368-04-0 from Curtis Industries functions as an equivalent substitute for the obsolete A20740407CARC based on matching electrical and mechanical specifications. Both components share identical pitch, circuit count, barrier configuration, termination method, wire gauge range, voltage rating, and flammability certification.

Key Considerations for Selection:

1. Current Rating Differential: The A20740407CARC is rated for 30A while the T38368-04-0 is rated for 20A. Applications requiring current levels between 20A and 30A must be evaluated against the substitute's 20A maximum rating. Applications operating at or below 20A are fully compatible.

2. Product Status: The A20740407CARC is obsolete with no ongoing manufacturing. The T38368-04-0 is active production, ensuring availability for procurement and future supply chain continuity.

3. Compliance Status: The T38368-04-0 carries ROHS3 compliance and REACH unaffected status, meeting current regulatory requirements. The A20740407CARC is RoHS non-compliant, reflecting its obsolete status.

4. Insulation Material: Both use thermoplastic insulation materials. The T38368-04-0 specifies polypropylene (PP), which is a thermoplastic polymer suitable for the same operating temperature range.

5. Mounting Configuration: The A20740407CARC uses through-hole mounting while the T38368-04-0 uses chassis/panel mounting. Physical installation method must be verified for mechanical compatibility with the application.

Selection Criteria:

• Select T38368-04-0 for applications requiring 20A or less
• Verify mounting type compatibility with application PCB or chassis design
• Confirm wire entry and termination point alignment with existing harness or circuit board layout
• Applications exceeding 20A current requirements require alternative substitute evaluation

Frequently Asked Questions (FAQ)

Q: Can the T38368-04-0 directly replace the A20740407CARC in all applications?

A: The T38368-04-0 is electrically and mechanically compatible for applications operating at 20A or below. The primary difference is the current rating: the original part is rated 30A while the substitute is rated 20A. Mounting type differs (through-hole versus chassis/panel), requiring verification of mechanical fit. If your application requires current above 20A, the T38368-04-0 is not suitable.

Q: What does the 0.375" pitch specification mean for compatibility?

A: Pitch refers to the center-to-center distance between adjacent circuits. Both the A20740407CARC and T38368-04-0 have 0.375" (9.53mm) pitch, meaning wire entry points and terminal spacing are identical. This ensures physical and electrical compatibility for circuit board layouts and harness designs.

Q: Are there differences in wire termination between these parts?

A: Both parts use screw termination on the top connection point. The A20740407CARC uses PC pin insulated termination on the bottom, while the T38368-04-0 uses wire wrap insulated termination. The termination method difference does not affect top-side screw connection compatibility but may affect bottom-side integration depending on application design.

Q: What is the significance of the UL94 V-0 rating on both parts?

A: UL94 V-0 is a flammability classification indicating the material resists flame propagation and self-extinguishes. Both parts carry this certification, confirming equivalent fire safety performance in applications requiring this standard.

Q: Why is the A20740407CARC listed as obsolete?

A: Obsolete status indicates the manufacturer (Eaton) has discontinued production. The T38368-04-0 from Curtis Industries is an active production equivalent, ensuring ongoing availability for replacement and new applications.

Q: Does the RoHS compliance difference affect substitution?

A: The T38368-04-0 is ROHS3 compliant while the A20740407CARC is non-compliant. For applications subject to RoHS regulations or customer requirements, the T38368-04-0 meets current compliance standards. For legacy systems without RoHS requirements, both parts are functionally equivalent.

Q: What is the operating temperature range for each part?

A: The A20740407CARC operates from -40°C to 105°C. The T38368-04-0 specification lists 105°C as the maximum operating temperature. Both parts are suitable for the same upper temperature limit. Verify minimum temperature requirements for your application; if operation below -40°C is required, neither part is suitable.

Q: How do I verify mechanical fit before substitution?

A: Confirm three elements: (1) pitch spacing of 0.375" matches your circuit board or harness layout, (2) mounting type (through-hole for original, chassis/panel for substitute) aligns with your installation method, and (3) wire entry point locations accommodate your existing wiring configuration.