KUP-14D55-48 Equivalent & Substitute Parts

Part Overview

The KUP-14D55-48 is a general purpose relay manufactured by TE Connectivity Potter & Brumfield Relays. This 3PDT (3 Form C) relay operates at 48VDC with a 10A contact rating and is designed for chassis mount applications. The part is currently active in production with 679 units in stock. Substitute parts are identified to address specific application requirements, particularly when mounting configuration or compliance status differs from the original specification.

Key Parameters

Parameter	Value
Manufacturer Part Number	KUP-14D55-48
Manufacturer	TE Connectivity Potter & Brumfield Relays
Series	KUP
Coil Voltage	48VDC
Contact Form	3PDT (3 Form C)
Contact Rating (Current)	10 A
Switching Voltage	240VAC - Max
Mounting Type	Chassis Mount
Termination Style	Quick Connect - 0.187" (4.7mm)
Coil Current	26.7 mA
Coil Resistance	1.8 kOhms
Operating Temperature Range	-45°C ~ 70°C
Contact Material	Silver Cadmium Oxide (AgCdO)
Product Status	Active
RoHS Status	RoHS3 Compliant

Substitute Part Grouping Explanation

Substitute parts for the KUP-14D55-48 are identified based on electrical and mechanical compatibility within the KUP series. The primary substitution criterion is the ability to perform the same electrical function while maintaining compatibility with the specified coil voltage, contact configuration, and current rating.

The KUP-14D55-48 and its substitute KUP-14D15-48 share the following critical parameters:

Coil Voltage: 48VDC
Contact Form: 3PDT (3 Form C)
Contact Rating: 10 A
Switching Voltage: 240VAC - Max
Coil Current: 26.7 mA
Coil Resistance: 1.8 kOhms
Operating Temperature Range: -45°C ~ 70°C
Contact Material: Silver Cadmium Oxide (AgCdO)
Termination Style: Quick Connect - 0.187" (4.7mm)

The primary difference between these parts is the mounting configuration: the KUP-14D55-48 is chassis mount, while the KUP-14D15-48 is socketable (plug-in). This distinction allows selection based on application-specific mounting requirements.

Parameter Comparison

Parameter	KUP-14D55-48 (Main)	KUP-14D15-48 (Substitute)
Manufacturer Part Number	KUP-14D55-48	KUP-14D15-48
Series	KUP	KUP
Coil Voltage	48VDC	48VDC
Contact Form	3PDT (3 Form C)	3PDT (3 Form C)
Contact Rating (Current)	10 A	10 A
Switching Voltage	240VAC - Max	240VAC - Max
Coil Current	26.7 mA	26.7 mA
Coil Resistance	1.8 kOhms	1.8 kOhms
Coil Type	Non Latching	Non Latching
Coil Insulation	Class B	Class B
Must Operate Voltage	36 VDC	36 VDC
Operate Time	15 ms	15 ms
Release Time	10 ms	10 ms
Operating Temperature Range	-45°C ~ 70°C	-45°C ~ 70°C
Contact Material	Silver Cadmium Oxide (AgCdO)	Silver Cadmium Oxide (AgCdO)
Termination Style	Quick Connect - 0.187" (4.7mm)	Plug In, Quick Connect - 0.187" (4.7mm)
Mounting Type	Chassis Mount	Socketable
Product Status	Active	Active
RoHS Status	RoHS3 Compliant	RoHS non-compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)
ECCN	EAR99	EAR99
HTSUS	8536.41.0050	8536.41.0050

Engineering Selection Recommendations

Selection between the KUP-14D55-48 and KUP-14D15-48 is determined by mounting configuration requirements and regulatory compliance needs.

KUP-14D55-48 (Chassis Mount) is the appropriate selection for applications requiring direct chassis mounting with fixed installation. This part is RoHS3 compliant and suitable for applications with RoHS compliance requirements.

KUP-14D15-48 (Socketable) is the appropriate selection for applications requiring plug-in socket mounting, enabling field replacement without soldering or permanent installation. This part is RoHS non-compliant and REACH affected, making it unsuitable for applications with strict environmental compliance mandates.

Both parts maintain identical electrical performance characteristics, including coil voltage, contact configuration, current rating, and operating parameters. The selection decision is based solely on mounting methodology and compliance status applicable to the end application.

Frequently Asked Questions (FAQ)

Q: Can the KUP-14D15-48 replace the KUP-14D55-48 in any application?

A: The KUP-14D15-48 can replace the KUP-14D55-48 only in applications where socketable (plug-in) mounting is acceptable. The electrical specifications are identical. However, the KUP-14D15-48 is RoHS non-compliant, so it cannot be used in applications requiring RoHS3 compliance.

Q: What is the primary difference between these two relay models?

A: The primary difference is the mounting type. The KUP-14D55-48 is chassis mount (direct installation), while the KUP-14D15-48 is socketable (plug-in installation). Both relays are part of the same KUP series and share identical electrical characteristics.

Q: Are the electrical specifications identical between KUP-14D55-48 and KUP-14D15-48?

A: Yes. Both relays have identical coil voltage (48VDC), contact form (3PDT), contact rating (10A), switching voltage (240VAC max), coil current (26.7 mA), operating temperature range (-45°C to 70°C), and contact material (Silver Cadmium Oxide). The termination style is also identical: Quick Connect 0.187" (4.7mm).

Q: Which part should be selected for RoHS-compliant applications?

A: The KUP-14D55-48 is RoHS3 compliant and must be selected for applications with RoHS compliance requirements. The KUP-14D15-48 is RoHS non-compliant and is not suitable for such applications.

Q: Can these relays be used interchangeably in the same circuit?

A: These relays can be used interchangeably only if the application accommodates the different mounting types (chassis mount versus socketable) and does not require RoHS compliance. The electrical function and performance are identical.

Q: What is the coil resistance of these relays?

A: Both the KUP-14D55-48 and KUP-14D15-48 have a coil resistance of 1.8 kOhms at 48VDC.

Q: What is the minimum voltage required to operate these relays?

A: The must operate voltage for both relays is 36 VDC. This is the minimum voltage at which the relay is guaranteed to energize.

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