KUP-14A45-12 Equivalent & Substitute Parts

Part Overview

The KUP-14A45-12 is a general purpose relay manufactured by TE Connectivity Potter & Brumfield Relays, featuring a 3PDT (3 Form C) contact configuration with a 12VAC coil and 10A contact rating. This socketable relay includes a lighted indicator and test button, designed for general purpose switching applications up to 240VAC.

The KUP-14A45-12 is classified as obsolete. Identifying equivalent substitute parts is necessary to maintain design continuity, ensure component availability, and support ongoing production and maintenance requirements for systems utilizing this relay.

Substiute Parts

KUP-14A45-12

TE Connectivity Potter & Brumfield RelaysIn Stock: 774KUP-14A45-12 Datasheet

Current PartRFQ

KUP-14D15-12

TE Connectivity Potter & Brumfield RelaysIn Stock: 2231KUP-14D15-12 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the KUP-14A45-12 are identified based on electrical and mechanical compatibility within the KUP-14 base product family. The following parameters establish substitution eligibility:

Electrical Compatibility Parameters:

• Contact form must be 3PDT (3 Form C)
• Contact rating must be 10A minimum
• Maximum switching voltage must be 240VAC or greater
• Contact material must be Silver Cadmium Oxide (AgCdO)
• Operate and release times must match or be faster

Mechanical Compatibility Parameters:

• Mounting type must be socketable
• Termination style must be Plug In, Quick Connect - 0.187" (4.7mm)
• Base product number must be KUP-14

Coil Voltage Consideration: The KUP-14A45-12 operates on 12VAC. Substitute parts may utilize different coil voltage types (AC or DC) provided all other electrical and mechanical parameters remain compatible. The coil voltage difference requires circuit-level evaluation but does not preclude mechanical and electrical substitution at the relay contact level.

Parameter Comparison

Engineering Selection Recommendations

KUP-14D15-12 as Primary Substitute:

The KUP-14D15-12 is the designated substitute for the obsolete KUP-14A45-12. Both relays share identical contact configurations, current ratings, switching voltages, and mechanical mounting characteristics. The primary difference is the coil voltage type: the KUP-14A45-12 operates on 12VAC while the KUP-14D15-12 operates on 12VDC.

Compliance and Availability Advantages:

The KUP-14D15-12 holds active product status with 2194 units in stock, compared to the obsolete KUP-14A45-12. The substitute part is ROHS3 compliant and REACH affected, representing current regulatory compliance standards. The KUP-14A45-12 is RoHS non-compliant and REACH unaffected, reflecting its obsolete classification.

Operational Considerations:

The KUP-14D15-12 supports an extended operating temperature range of -45°C to 70°C, compared to the KUP-14A45-12 range of -45°C to 45°C. This provides additional thermal margin for applications operating at elevated temperatures. The coil current requirement differs (100 mA for KUP-14D15-12 versus 230 mA for KUP-14A45-12), necessitating circuit-level evaluation to ensure the control circuit can supply the appropriate coil voltage and current.

Frequently Asked Questions (FAQ)

Q: Can the KUP-14D15-12 directly replace the KUP-14A45-12 in existing applications?

A: The KUP-14D15-12 is mechanically and electrically compatible at the relay contact level. However, the coil voltage differs (12VDC versus 12VAC). Direct replacement requires that the control circuit be capable of supplying 12VDC at 100 mA to the relay coil. If the existing circuit supplies 12VAC, the control circuit must be modified or a separate power supply must be provided.

Q: What are the key electrical parameters that make these relays substitutable?

A: Both relays feature identical 3PDT contact configurations, 10A contact ratings, 240VAC maximum switching voltage, Silver Cadmium Oxide contact material, 15 ms operate time, and 10 ms release time. These parameters ensure equivalent switching performance and load capacity.

Q: Are there packaging differences between these parts?

A: The KUP-14A45-12 packaging is listed as dash (-), while the KUP-14D15-12 is supplied in bulk packaging. Both utilize identical socketable mounting and 0.187" (4.7mm) quick connect termination, ensuring mechanical compatibility.

Q: What is the significance of the RoHS and REACH compliance differences?

A: The KUP-14D15-12 is ROHS3 compliant and REACH affected, meeting current environmental and regulatory requirements for electronic components. The obsolete KUP-14A45-12 is RoHS non-compliant and REACH unaffected. For new designs or systems requiring regulatory compliance documentation, the KUP-14D15-12 is the appropriate selection.

Q: How do the operating temperature ranges differ?

A: The KUP-14A45-12 operates from -45°C to 45°C, while the KUP-14D15-12 operates from -45°C to 70°C. The extended upper temperature limit of the substitute part provides additional thermal margin for applications in elevated temperature environments.

Q: What is the coil resistance difference, and does it affect substitution?

A: The KUP-14A45-12 has 18 Ohms coil resistance, while the KUP-14D15-12 has 120 Ohms. This difference reflects the different coil voltage types (12VAC versus 12VDC) and is expected. The control circuit must supply the appropriate voltage and current for the selected relay coil.