PR28-6V-360-1C-E

CUI Devices is now Same Sky! Learn More 

**date** 06/10/2025 **page** 1 of 6 

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## **SERIES:** PR28 | **DESCRIPTION:** POWER RELAY 

## **FEATURES** 

- 20 amp 

- 1 form  A 

- 1 form  C 

- class F 

|Hols¢FALys|||||||
|---|---|---|---|---|---|---|
|**MODEL**|**coil**<br>**voltage**|**coil**<br>**resistance**|**operating**<br>**voltage1**|**release**<br>**voltage**|**continuous**<br>**voltage**|**coil**<br>**power**|
||**typ**||**min**|**max**|**max**|**max**|
||(Vdc)|(Ω±10%)|(Vdc)|(Vdc)|(Vdc)|(mW)|
|PR28-3V-360|3|25|2.25|0.3|3.3|360|
|PR28-5V-360|5|70|3.8|0.5|5.5|360|
|PR28-6V-360|6|100|4.5|0.6|6.6|360|
|PR28-9V-360|9|225|6.8|0.9|9.9|360|
|PR28-12V-360|12|400|9.0|1.2|13.2|360|
|PR28-15V-360|15|625|11.25|1.5|16.5|360|
|PR28-18V-360|18|900|13.5|1.8|19.8|360|
|PR28-24V-360|24|1,600|18.0|2.4|26.4|360|
|PR28-36V-360|36|3,600|27.0|3.6|39.6|360|
|PR28-48V-360|48|6,400|36.0|4.8|52.8|360|



## **MODEL** 

Notes: 1. Relay may pull in with less than operating voltage. 

2. All specifications are measured at 23°C unless otherwise specified. 

## **PART NUMBER KEY** 

## **PR28 - XX - 360 - XX - X** 

Base Number Coil Voltage (Vdc): Contact Form: Sealing: 3V = 3 1A = 1 Form A “blank” = Flux Protection 5V = 5 1C = 1 Form C E = Epoxy Sealed 6V = 6 9V = 9 12V = 12 15V = 15 18V = 18 24V = 24 36V = 36 48V = 48 

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**SAME SKY** | **SERIES:** PR28 | **DESCRIPTION:** POWER RELAY 

**date** 06/10/2025 | **page** 2 of 6 

## **COIL SPECIFICATIONS** 

|**COIL SPECIFICATIONS**|**COIL SPECIFICATIONS**|
|---|---|
|**parameter**<br>**conditions/description**<br>**min**<br>**typ**<br>**max**<br>**units**||
|coil power<br>nominal<br>at pickup voltage<br>360<br>207<br>mW<br>mW||
|temperature rise<br>at nominal coil voltage<br>42<br>K||
|**CONTACT SPECIFICATIONS**||
|**parameter**|**conditions/description**<br>**min**<br>**typ**<br>**max**<br>**units**|
|contact form|1 Form A, 1 Form C|
|contact material|AgSnO2 (silver tin oxide)|
|contact rating|1 Form A<br>17 A @ 277 Vac<br>12 A @ 250 Vac|
||1 Form C<br>17/10 A @ 277 Vac NO/NC|
|contact resistance|at 1 A, 6 V, voltage drop method<br>100<br>mΩ|
|max switching voltage|277<br>30<br>Vac<br>Vdc|
|max switching current|Vac<br>Vdc<br>20<br>16<br>A<br>A|
|max switching power|Vac<br>Vdc<br>4,700<br>480<br>VA<br>W|
|life|electrical: at 277 Vac, 16 A (1 Form A/1 Form C (NO),<br>7 A (1 Form C (NC), resistive<br>mechanical<br>100,000<br>10,000,000<br>operations<br>operations|
|**GENERAL SPECIFICATIONS**||
|**parameter**<br>**conditions/description**<br>**min**<br>**typ**<br>**max**<br>**units**||
|insulation resistance<br>at 500 Vdc, 23 °C, 50% RH<br>100<br>MΩ||
|dielectric strength<br>between coil and contacts at sea level for 1 minute<br>2,000<br>Vrms||
|operate time<br>at nominal coil voltage<br>10<br>ms||
|release time<br>at nominal coil voltage, without coil suppression<br>5<br>ms||
|shock resistance<br>10<br>G||
|vibration resistance<br>10~55 Hz, 1.5 mm double amplitude||
|operating temperature<br>at nominal coil voltage<br>-40<br>85<br>°C||
|storage temperature<br>at nominal coil voltage<br>-40<br>130<br>°C||
|weight<br>9.5<br>g||
|safety approvals<br>UL/cUL 508||
|fammability rating<br>UL94V-0||
|RoHS<br>yes||
|packaging<br>box: 100 pcs per box<br>carton QTY: 1,000 pcs per carton||
|**SOLDERABILITY**||
|**parameter**<br>**conditions/description**<br>**min**<br>**typ**<br>**max**<br>**units**||
|wave soldering<br>for max 5 seconds<br>260<br>°C||
|washable<br>only on epoxy sealed models<br>max imersion time of 30 seconds<br>80<br>°C||



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**SAME SKY** | **SERIES:** PR28 | **DESCRIPTION:** POWER RELAY 

**date** 06/10/2025 | **page** 3 of 6 

## **MECHANICAL DRAWING (1A = 1 FORM A)** 

units: mm[inch] tolerance: X ≤ 1.00: ±0.20 mm 1.00<X ≤ 5.00: ±0.30 mm X>5.00: ±0.40 mm pin length: ±0.40 mm PCB: ±0.254 mm unless otherwise noted 

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Recommended PCB Layout<br>Bottom View<br>**----- End of picture text -----**<br>


|DESCRIPTION|MATERIAL|PLATING/COLOR|
|---|---|---|
|housing|PBT (UL94V-0)|white|
|terminals|copper alloy|tin|



Wiring Diagram Bottom View 

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**SAME SKY** | **SERIES:** PR28 | **DESCRIPTION:** POWER RELAY 

**date** 06/10/2025 | **page** 4 of 6 

## **MECHANICAL DRAWING (1C = 1 FORM C)** 

units: mm[inch] tolerance: X ≤ 1.00: ±0.20 mm 1.00<X ≤ 5.00: ±0.30 mm X>5.00: ±0.40 mm pin length: ±0.40 mm PCB: ±0.254 mm unless otherwise noted 

Recommended PCB Layout Bottom View 

|DESCRIPTION|MATERIAL|PLATING/COLOR|
|---|---|---|
|housing|PBT (UL94V-0)|white|
|terminals|copper alloy|tin|



Wiring Diagram Bottom View 

**sameskydevices.com** 

Additional Resources:   Product Page    |    3D Model |    PCB Footprint 

**SAME SKY** | **SERIES:** PR28 | **DESCRIPTION:** POWER RELAY 

**date** 06/10/2025 | **page** 5 of 6 

## **CHARACTERISTIC CURVES** 

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Temperature Rise (K)<br>**----- End of picture text -----**<br>


## Coil Temperature Rise 

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## Life Curve 

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Contact Current (A)<br>Operations (×10,000)<br>**----- End of picture text -----**<br>


Percentage of Nominal Coil Voltage (%) 

Test Conditions: Curve A: 20 A at 85⁰C Curve B: 16 A at 85⁰C Mounting Distance: 25 mm 

Maximum Switching Power 

Test Conditions: Curve A: NO, resistive load, 85⁰C, flux protection, 16 A, 250 Vac, 1 second on 9 seconds off Curve B: NO, resistive load, 85⁰C, flux protection, 20 A, 250 Vac, 1 second on 9 seconds off 

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Contact Voltage (VAC)<br>Contact Current (A)<br>**----- End of picture text -----**<br>


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**SAME SKY** | **SERIES:** PR28 | **DESCRIPTION:** POWER RELAY 

**date** 06/10/2025 | **page** 6 of 6 

## **REVISION HISTORY** 

|**rev.**|**description**|**date**|
|---|---|---|
|1.0|initial release|02/14/2024|
|1.01|removed F from part number|05/10/2024|
|1.02|CUI Devices rebranded to Same Sky|09/12/2024|
|1.03|updated tolerances|06/10/2025|



The revision history provided is for informational purposes only and is believed to be accurate. 

Same Sky offers a one (1) year limited warranty.  Complete warranty information is listed on our website. 

Same Sky reserves the right to make changes to the product at any time without notice.  Information provided by Same Sky is believed to be accurate and reliable.  However, no responsibility is assumed by Same Sky for its use, nor for any infringements of patents or other rights of third parties which may result from its use. 

Same Sky products are not authorized or warranted for use as critical components in equipment that requires an extremely high level of reliability.  A critical component is any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness. 

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