TE Connectivity AMP Connectors 1546561-4 Equivalent & Substitute Parts

Part Overview

The TE Connectivity AMP Connectors 1546561-4 is a 14-circuit barrier block connector with 0.438" (11.12mm) pitch, rated for 20A at 600V, and designed for through-hole mounting applications. This component features dual-wall barrier construction with screw termination on top and PC pin termination on the bottom.

The 1546561-4 is classified as obsolete. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production and maintenance requirements for systems utilizing this connector type.

Substiute Parts

1546561-4

TE Connectivity AMP ConnectorsIn Stock: 7221546561-4 Datasheet

Current PartRFQ

A30221404

Eaton - Electronics DivisionIn Stock: 813A30221404 Datasheet

SimilarRFQ

A302214A3

Eaton - Electronics DivisionIn Stock: 902A302214A3 Datasheet

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LP30221404B2

Eaton - Electronics DivisionIn Stock: 1154LP30221404B2 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the 1546561-4 is determined by the following critical parameters that must align with the original design requirements:

Core Compatibility Parameters:

• Terminal block type: Barrier block construction
• Number of circuits: 14
• Pitch tolerance: 0.438" (11.12mm) nominal, with 0.437" (11.10mm) acceptable as equivalent
• Number of wire entries: 14
• Number of rows: 1
• Bottom termination: PC pin
• Barrier construction: 2 wall (dual)
• Mounting type: Through hole

Electrical Performance Parameters:

• Current rating: Minimum 20A (higher ratings acceptable)
• Voltage rating: Minimum 600V (lower voltage ratings not acceptable)
• Wire gauge compatibility: 12 AWG minimum support required

Physical and Environmental Parameters:

• Color: Black
• Operating temperature range: Must support -60°C minimum and 105°C maximum
• Insulation material: Thermoplastic
• Flammability rating: UL94 V-2 minimum

Three substitute parts meet these core compatibility criteria while offering enhanced specifications or active product status.

Parameter Comparison

Engineering Selection Recommendations

A30221404 (Eaton A3000 Series)

The A30221404 provides direct functional equivalence to the 1546561-4 with enhanced electrical performance. This part maintains 600V voltage rating, supports 12-22 AWG wire gauge range, and features identical barrier block construction with dual-wall design. The A30221404 is classified as active product status, ensuring ongoing availability and supply chain support. Current rating is increased to 30A, providing design margin above the original 20A specification. The component achieves UL94 V-0 flammability rating and ROHS3 compliance. Operating temperature range of -40°C to 105°C covers the upper specification of the original part, though the lower temperature limit is reduced from -60°C to -40°C. This part is suitable for applications where the reduced low-temperature operating range is acceptable.

A302214A3 (Eaton A3000 Series with Quick Connect Tabs)

The A302214A3 offers equivalent barrier block construction and electrical specifications to the A30221404, with the addition of quick connect tabs on the screw termination. This feature provides enhanced assembly flexibility. The part maintains 600V voltage rating, 30A current capacity, and supports 12-22 AWG wire gauge. ROHS3 compliance and UL94 V-0 flammability rating are provided. Operating temperature range is -40°C to 105°C. The quick connect tab feature represents a design enhancement over the original 1546561-4 and may require mechanical interface verification in existing applications.

LP30221404B2 (Eaton LP3000 Series with Quick Connect Tabs)

The LP30221404B2 maintains barrier block construction, dual-wall design, and 14-circuit configuration with quick connect tabs. This part supports 12-22 AWG wire gauge and operates across -40°C to 105°C. However, the voltage rating is reduced to 150V, which is significantly lower than the original 600V specification. This part is suitable only for applications with voltage requirements of 150V or less. ROHS3 compliance and UL94 V-0 flammability rating are provided.

Selection Guidance:

For applications requiring 600V operation, select either A30221404 or A302214A3. The A30221404 provides direct screw termination matching the original design, while A302214A3 adds quick connect tab functionality. For applications operating at 150V or lower, LP30221404B2 is available as an alternative. All substitute parts are active products with ROHS3 compliance and superior flammability ratings compared to the obsolete original part.

Frequently Asked Questions (FAQ)

Q: Can the A30221404 directly replace the 1546561-4 in existing designs?

A: The A30221404 provides functional equivalence for applications where the operating temperature range of -40°C to 105°C is acceptable. The original 1546561-4 specifies -60°C minimum, which the A30221404 does not support. Verify that your application does not require operation below -40°C. All other critical parameters—14 circuits, 0.437" pitch (equivalent to 0.438"), 600V rating, 12 AWG wire gauge support, dual-wall barrier construction, and through-hole mounting—are compatible.

Q: What is the difference between A30221404 and A302214A3?

A: Both parts are from the Eaton A3000 series and share identical electrical specifications: 14 circuits, 0.437" pitch, 600V rating, 30A current capacity, and -40°C to 105°C operating range. The primary difference is that A302214A3 includes quick connect tabs on the screw termination, while A30221404 features standard screw termination. The quick connect tabs provide enhanced assembly convenience but require verification of mechanical compatibility with existing PCB layouts or connector interfaces.

Q: Why is the LP30221404B2 voltage rating only 150V?

A: The LP30221404B2 is part of the Eaton LP3000 series, which is designed for lower-voltage applications. This part is not suitable as a substitute for the 1546561-4 in applications requiring 600V operation. The LP30221404B2 is appropriate only for systems with maximum operating voltages of 150V or less.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All three substitute parts—A30221404, A302214A3, and LP30221404B2—are ROHS3 compliant. The original 1546561-4 has ROHS status listed as not applicable. Substitution with any of these parts will improve environmental compliance for new designs or production runs.

Q: What is the pitch difference between the 1546561-4 and the substitute parts?

A: The original 1546561-4 specifies 0.438" (11.12mm) pitch, while all three substitute parts specify 0.437" (11.10mm) pitch. This 0.001" (0.02mm) difference is within standard manufacturing tolerances for barrier block connectors and does not affect mechanical or electrical compatibility. Both pitches are functionally equivalent for PCB layout and connector interface applications.

Q: Can I use A302214A3 or LP30221404B2 if my application does not require quick connect tabs?

A: Yes. The quick connect tabs on A302214A3 and LP30221404B2 are additional features that do not interfere with standard screw termination operation. If your application uses only the screw termination interface, these parts function identically to A30221404. However, verify that the physical presence of the quick connect tabs does not create mechanical interference with your specific PCB layout or connector housing.

Q: What is the wire gauge range supported by the substitute parts?

A: All three substitute parts support 12-22 AWG wire gauge, which exceeds the original 1546561-4 specification of 12 AWG only. This expanded range provides greater flexibility for applications using smaller gauge wires. Ensure that your wire gauge selection remains within the 12-22 AWG range for all substitute parts.

Q: Are there any flammability rating differences I should consider?

A: The original 1546561-4 has a UL94 V-2 flammability rating. All three substitute parts achieve UL94 V-0, which represents a higher flammability performance standard. This improvement is beneficial for safety-critical applications and may be required by updated design standards or regulatory requirements.

Q: What is the current rating difference, and does it affect my application?

A: The original 1546561-4 is rated for 20A, while all substitute parts are rated for 30A. The higher current rating provides additional design margin and does not negatively affect applications designed for 20A operation. Verify that your application current requirements do not exceed 30A for any substitute part.