HP3-DC48V Equivalent & Substitute Parts

Part Overview

The HP3-DC48V is a general purpose relay manufactured by Panasonic Electric Works, featuring a 3PDT (3 Form C) contact configuration with 10A contact rating and 48VDC coil voltage. This socketable relay is designed for standard industrial switching applications. The part is currently obsolete, making equivalent substitute parts necessary for ongoing system maintenance and new designs requiring compatible functionality.

Key Parameters

Parameter	Value
Coil Voltage	48VDC
Contact Form	3PDT (3 Form C)
Contact Rating (Current)	10 A
Mounting Type	Socketable
Termination Style	Plug In, Quick Connect - 0.187" (4.7mm)
Coil Type	Non Latching
Operating Temperature Range	-50°C ~ 40°C
Contact Material	Silver (Ag)

Substitute Part Grouping Explanation

Substitute parts for the HP3-DC48V are qualified based on the following critical parameters that must match or exceed the original specification:

Coil voltage: 48VDC (exact match required)
Contact form: 3PDT (3 Form C) (exact match required)
Contact rating: 10A minimum (exact match provided)
Mounting type: Socketable (exact match required)
Termination style: Plug In, Quick Connect - 0.187" (4.7mm) (exact match required)
Coil type: Non Latching (exact match required)

The three qualified substitutes from TE Connectivity Potter & Brumfield Relays (KUP series) meet all mandatory electrical and mechanical parameters. Variations in coil current, operate/release times, and contact material (Silver Cadmium Oxide vs. Silver) are within acceptable tolerances for general purpose relay applications where these parameters are not application-critical constraints.

Parameter Comparison

Parameter	HP3-DC48V	KUP-14D15-48	KUP-14D35-48	KUP-14D45-48
Manufacturer	Panasonic Electric Works	TE Connectivity Potter & Brumfield	TE Connectivity Potter & Brumfield	TE Connectivity Potter & Brumfield
Product Status	Obsolete	Active	Active	Active
Coil Voltage	48VDC	48VDC	48VDC	48VDC
Contact Form	3PDT (3 Form C)	3PDT (3 Form C)	3PDT (3 Form C)	3PDT (3 Form C)
Contact Rating (Current)	10 A	10 A	10 A	10 A
Switching Voltage	250VAC - Nom	240VAC - Max	240VAC - Max	240VAC - Max
Coil Current	31 mA	26.7 mA	26.7 mA	26.7 mA
Mounting Type	Socketable	Socketable	Socketable	Socketable
Termination Style	Plug In, Quick Connect - 0.187" (4.7mm)	Plug In, Quick Connect - 0.187" (4.7mm)	Plug In, Quick Connect - 0.187" (4.7mm)	Plug In, Quick Connect - 0.187" (4.7mm)
Coil Type	Non Latching	Non Latching	Non Latching	Non Latching
Must Operate Voltage	38.4 VDC	36 VDC	36 VDC	36 VDC
Operate Time	30 ms	15 ms	15 ms	15 ms
Release Time	30 ms	10 ms	10 ms	10 ms
Operating Temperature Range	-50°C ~ 40°C	-45°C ~ 70°C	-45°C ~ 70°C	-45°C ~ 70°C
Contact Material	Silver (Ag)	Silver Cadmium Oxide (AgCdO)	Silver Cadmium Oxide (AgCdO)	Silver Cadmium Oxide (AgCdO)
Coil Resistance	1.56 kOhms	1.8 kOhms	1.8 kOhms	1.8 kOhms
Features	None	None	Lighted Indicator	Lighted Indicator, Test Button
Packaging	-	Bulk	Bulk	Tray
RoHS Status	Not specified	RoHS non-compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

All three KUP-series substitutes are active products from an established relay manufacturer and provide direct functional equivalence to the obsolete HP3-DC48V. Selection among the three substitutes depends on application-specific requirements:

KUP-14D15-48 is the baseline substitute with no additional features. This part is RoHS non-compliant and suitable for applications without regulatory compliance constraints.

KUP-14D35-48 adds a lighted indicator feature and achieves ROHS3 compliance, making it appropriate for applications requiring visual status indication and modern environmental standards compliance.

KUP-14D45-48 includes both lighted indicator and test button features with ROHS3 compliance. The test button provides field diagnostics capability. This variant is supplied in tray packaging.

The KUP substitutes operate faster (15 ms operate, 10 ms release) compared to the original HP3-DC48V (30 ms each), and feature lower coil current (26.7 mA vs. 31 mA), resulting in reduced power consumption. The KUP series operates across a wider temperature range (-45°C ~ 70°C vs. -50°C ~ 40°C). These performance improvements are compatible with applications designed for the HP3-DC48V.

Frequently Asked Questions (FAQ)

Q: Can KUP-14D15-48, KUP-14D35-48, and KUP-14D45-48 be used interchangeably with HP3-DC48V?

A: Yes. All three KUP variants meet the mandatory electrical and mechanical specifications: 48VDC coil, 3PDT contact form, 10A contact rating, socketable mounting, and 0.187" (4.7mm) quick connect termination. The differences in features, coil current, and switching speed do not prevent functional substitution in general purpose relay applications.

Q: What is the difference between the three KUP substitute options?

A: KUP-14D15-48 is the base model without additional features. KUP-14D35-48 adds a lighted indicator and includes ROHS3 compliance. KUP-14D45-48 includes both lighted indicator and test button with ROHS3 compliance and is packaged in trays rather than bulk.

Q: Are there compliance differences between the substitutes?

A: KUP-14D15-48 is RoHS non-compliant. Both KUP-14D35-48 and KUP-14D45-48 are ROHS3 compliant. Applications subject to RoHS regulations should specify either KUP-14D35-48 or KUP-14D45-48.

Q: How do the operating characteristics compare?

A: The KUP substitutes operate faster (15 ms vs. 30 ms) and release faster (10 ms vs. 30 ms) than the HP3-DC48V. Coil current is lower (26.7 mA vs. 31 mA). These improvements are backward compatible with applications designed for the original part.

Q: What packaging options are available?

A: KUP-14D15-48 and KUP-14D35-48 are supplied in bulk packaging. KUP-14D45-48 is supplied in tray packaging.

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