Equivalent & Substitute Parts: A219402RC

Part Overview

The Eaton A219402RC is a 2-circuit barrier block connector with 0.375" (9.53mm) pitch, rated for 30A at 300V, and designed for chassis and panel mounting applications. This component features dual-wall barrier construction with screw-based top termination and quick-connect bottom termination. The A219402RC is classified as obsolete, necessitating identification of functionally equivalent alternatives for ongoing procurement and system maintenance.

Substiute Parts

A219402RC

Eaton - Electronics DivisionIn Stock: 959A219402RC Datasheet

Current PartRFQ

T38540-02-0

Curtis IndustriesIn Stock: 1140T38540-02-0 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the A219402RC is based on strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Terminal block type: Barrier block construction
• Number of circuits: 2
• Pitch spacing: 0.375" (9.53mm)
• Number of rows: 1
• Wire gauge compatibility: 12-22 AWG
• Top termination method: Screws
• Barrier configuration: 2 Wall (Dual)
• Mounting capability: Chassis and panel mounting
• Flammability rating: UL94 V-0

Allowable Variation Parameters:

• Current rating: Substitute may have lower current capacity if application requirements permit
• Bottom termination connector size: Variation in quick-connect dimensions acceptable if mechanical fit is verified
• Terminal screw material and finish: Substitutes with alternative steel finishes or materials acceptable
• Insulation material composition: Thermoplastic or polypropylene acceptable
• Operating temperature maximum: Substitute with 105°C maximum acceptable for applications not requiring -40°C minimum

The Curtis Industries T38540-02-0 meets all mandatory matching parameters and is classified as an active product, providing continuity for applications previously using the obsolete A219402RC.

Parameter Comparison

Engineering Selection Recommendations

The Curtis Industries T38540-02-0 serves as a functional equivalent for the obsolete Eaton A219402RC based on matching terminal block architecture, circuit configuration, pitch spacing, and electrical ratings for voltage and wire gauge compatibility.

Selection Criteria:

1. Current Rating Consideration: The T38540-02-0 is rated for 20A maximum current, compared to the A219402RC 30A rating. Applications operating at currents exceeding 20A require verification that the substitute part meets thermal and safety requirements, or alternative parts with higher current ratings must be sourced.

2. Quick-Connect Termination Compatibility: The bottom termination differs between parts (0.250" on A219402RC versus 0.187" on T38540-02-0). Existing mating connectors and backplane connections must be verified for mechanical and electrical compatibility before substitution.

3. Compliance and Product Status: The T38540-02-0 is an active product with ROHS3 compliance certification, providing supply chain continuity and regulatory alignment for new designs and ongoing production. The A219402RC obsolete status limits future availability.

4. Material and Finish Variations: Both parts meet UL94 V-0 flammability requirements. The insulation material differs (thermoplastic versus polypropylene), and terminal screw finishes differ (zinc versus nickel). These variations do not preclude substitution for standard industrial applications within the specified operating temperature range.

Frequently Asked Questions (FAQ)

Q: Can the T38540-02-0 directly replace the A219402RC in existing assemblies?

A: Direct replacement requires verification of two factors: (1) application current does not exceed 20A, and (2) existing mating connectors are compatible with the 0.187" quick-connect termination on the T38540-02-0, as opposed to the 0.250" termination on the A219402RC. If either condition is not met, alternative substitutes or design modifications are necessary.

Q: What is the significance of the different current ratings?

A: The A219402RC is rated for 30A maximum current, while the T38540-02-0 is rated for 20A. Applications drawing currents between 20A and 30A cannot use the T38540-02-0 without exceeding its electrical specifications. Current requirements must be confirmed before substitution.

Q: Are the insulation materials functionally equivalent?

A: Both the thermoplastic insulation of the A219402RC and the polypropylene insulation of the T38540-02-0 meet UL94 V-0 flammability ratings and operate across the specified temperature range. Material composition differences do not affect functional compatibility for standard barrier block applications.

Q: What does the different quick-connect pin size mean for compatibility?

A: The A219402RC uses 0.250" quick-connect pins, while the T38540-02-0 uses 0.187" pins. These are mechanically distinct and require different mating connectors. Existing backplane or connector assemblies designed for 0.250" pins cannot accept 0.187" pins without modification or adapter components.

Q: Is the T38540-02-0 suitable for new designs?

A: Yes. The T38540-02-0 is an active product with ROHS3 compliance, making it appropriate for new designs. However, application current requirements must not exceed 20A, and the quick-connect termination specification must align with system requirements.

Q: What is the difference between zinc and nickel terminal screw finishes?

A: Both zinc and nickel finishes provide corrosion resistance for steel terminal screws. Zinc finishes are standard for general industrial use, while nickel finishes offer enhanced corrosion resistance in certain environments. Selection depends on application environmental conditions and existing system specifications.

Q: Why is the A219402RC classified as obsolete?

A: Obsolete status indicates the manufacturer (Eaton) has discontinued production and support for this part number. The T38540-02-0 from Curtis Industries provides functional continuity for applications requiring 2-circuit barrier block connectors with 0.375" pitch and screw termination.