2903703
Power Relay, 3PDT, 24 VAC, 16 A, REL-PR3 Series, Socket
- Manufacturer: PHOENIX CONTACT
- Product type: Power Relays
- SVHC: No SVHC (04-Feb-2026)
- Coil Type: -
- Coil Voltage: 24VAC
- Product Range: REL-PR3 Series
- Relay Mounting: Socket
- Coil Resistance: 75ohm
- Contact Current: 16A
- Relay Terminals: Plug In
- Contact Material: Silver Nickel
- Contact Voltage VAC: 440V
- Contact Voltage VDC: 250V
- Contact Configuration: 3PDT
| Delivery and price | |
|---|---|
| Units per pack | 1 |
| Price | 12.88 € |
| Current stock | 10+ |
| Lead time | 30 days |
https://www.phoenixcontact.com/in/products/2903703 ## Single relay - REL-PR3- 24AC/3X21 - 2903703 Please be informed that the data shown in this PDF Document is generated from our Online Catalog. Please find the complete data in the user's documentation. Our General Terms of Use for Downloads are valid (http://phoenixcontact.com/download) Plug-in high-power relay with power contacts, 3 PDTs, coil voltage: 24 V AC ## Key Commercial Data Packing unit 1 pc ~~a Ge~~ GTIN ~~a a~~ GTIN ~~Qe~~ 4046356759151 ~~a~~ Weight per Piece (excluding packing) 84.300 g Custom tariff number 85364190 ~~a a~~ Country of origin ~~G~~ Poland ## Technical data ## Dimensions |Width|38.6 mm| |---|---| |Height|36.1 mm| |Depth|45.5 mm| |Ambient conditions|| |Ambient temperature (operation)|-40 °C ... 55 °C| |Ambient temperature (storage/transport)|-40 °C ... 85 °C| |Coil side|| |Nominal input voltage UN|24 V AC| |Mains frequency|50/60 Hz| |Typical input current at UN|116 mA| |Typical response time|5 ms ... 25 ms (depending on phase relation)| |Typical release time range|5 ms ... 20 ms (depending on phase relation)| |Coil resistance|75 Ω ±15 %| |Power dissipation for nominal condition|2.78 W| 12/29/2018 Page 1 / 6 https://www.phoenixcontact.com/in/products/2903703 ## Single relay - REL-PR3- 24AC/3X21 - 2903703 ## Technical data ## Contact side |Contact side|| |---|---| |Contact type|3 PDTs| |Type of switch contact|Single contact| |Contact material|AgNi| |Maximum switching voltage|440 V AC| ||250 V DC| |Minimum switching voltage|10 V (At 24 mA)| |Min. switching current|10 mA (at 24 V)| |Maximum inrush current|50 A (20 ms, N/O contact)| |Limiting continuous current|16 A| |Interrupting rating (ohmic load) max.|384 W (at 24 V DC)| ||124 W (at 48 V DC)| ||108 W (at 60 V DC)| ||52 W (at 110 V DC)| ||70 W (at 220 V DC)| ||4000 VA (for 250 V AC)| ||4000 VA (at 440 V AC)| |Switching capacity according to IEC 60947-5-1|2 A (24 V, DC13)| ||1.5 A (230 V, AC15)| |3-phase motor load|1500 W (at 400 V, AC3)| |Motor load according to UL 508|1/3 HP, 120 V AC (single-phase AC motor)| ||1/2 HP, 240 V AC (single-phase AC motor)| ||1/2 HP, 240 V AC (three-phase induction motor)| ## General Note The outputs are not suitable for switching different outer conductors. Do not use to separate SELV / PELV circuits from other circuits, because safe isolation is not guaranteed. Test voltage relay winding/relay contact 2.5 kVrms (50 Hz, 1 min.) Test voltage PDT/PDT 2.5 kVrms (50 Hz, 1 min.) Operating mode 100% operating factor Degree of protection RT I Mechanical service life approx. 107 cycles Mounting position any Standards and Regulations Connection in acc. with standard CSA Standards/regulations IEC 60664 IEC 61810 Rated insulation voltage 250 V AC Rated surge voltage 4 kV Insulation Basic insulation Degree of pollution 3 ~~=>~~ 12/29/2018 Page 2 / 6 https://www.phoenixcontact.com/in/products/2903703 ## Single relay - REL-PR3- 24AC/3X21 - 2903703 ## Technical data ## Standards and Regulations Overvoltage category **==> picture [487 x 67] intentionally omitted <==** **----- Start of picture text -----**<br> ||| |---|---| |Overvoltage category|III| |Environmental Product Compliance| |China RoHS|Environmentally Friendly Use Period = 50| |For details about hazardous substances go to tab “Downloads”,| |Category “Manufacturer's declaration”| **----- End of picture text -----**<br> ## Environmental Product Compliance ## Drawings ## Circuit diagram ## Diagram **==> picture [427 x 299] intentionally omitted <==** **----- Start of picture text -----**<br> 1,8 a<br>|a 11 14 12 1,6 a a<br>A1 ee ee es<br>| a 1,4 ee<br>| 21 24 22 | »9 1,2 ~ | [| f ft ft ft ft<br>| ee ee i a a a<br>A2 1,0<br>ee 31 34 32 | cs A<br>| ee gf}ef ef<br>A oO er 0,8 _———ai eeee ee|_| ee||<br>a<br>0,6<br>0 10 20 30 40 50 60 70 80<br>Ambient temperature [°C] —— —<br>@ DC coils<br>@ AC coils<br>Operating voltage range<br>Diagram Diagram<br>107<br>20<br>10<br>5 106<br>2<br> Ne 1 a ee<br>105<br>0,5 [eeDp |STa eS A Se| cs Sc Se |<br>0,3 [| [| | titty os fy a a |<br>0,2 a a<br>0,1 | ET TTT EE 104 ee<br>10 20 30 50 70 100 200 300 500 0 1 2 3 4<br>N<br>Cycles<br>**----- End of picture text -----**<br> Interrupting rating Electrical service life 12/29/2018 Page 3 / 6 https://www.phoenixcontact.com/in/products/2903703 ## Single relay - REL-PR3- 24AC/3X21 - 2903703 ## Diagram **==> picture [164 x 97] intentionally omitted <==** **----- Start of picture text -----**<br> 1<br>0,9 a ee ee<br>0,8 | | PAR ft<br>0,7<br>0,6<br>0,50,4 | | | | | | IN<br>0,3 1 | 0,9 | 0,8 | 0,7 | 0,6 [| 0,5 | 0,4 [| | 0,3 Ss 0,2<br>COS<br>**----- End of picture text -----**<br> Service life reduction factor ## Classifications ## eCl@ss |eCl@ss 5.0|eCl@ss 5.0|27371601| |---|---|---| |eCl@ss 5.1|eCl@ss 5.1|27371600| |eCl@ss 6.0|eCl@ss 6.0|27371600| |eCl@ss 7.0|eCl@ss 7.0|27371601| |eCl@ss 8.0|eCl@ss 8.0|27371601| |eCl@ss 9.0|eCl@ss 9.0|27371601| ## ETIM |ETIM 2.0|EC001437| |---|---| |ETIM 3.0|EC001437| |ETIM 4.0|EC001437| |ETIM 5.0|EC001437| |ETIM 6.0|EC001437| |UNSPSC|| |UNSPSC 6.01|30211916| |UNSPSC 7.0901|39121515| |UNSPSC 11|39121515| |UNSPSC 12.01|39121515| |UNSPSC 13.2|39122334| ## UNSPSC ## Approvals ## Approvals ## Approvals CSA / UL Recognized / cUL Recognized / EAC / cULus Recognized 12/29/2018 Page 4 / 6 https://www.phoenixcontact.com/in/products/2903703 ## Single relay - REL-PR3- 24AC/3X21 - 2903703 ## Approvals Ex Approvals ## Approval details CSA http://www.csagroup.org/services-industries/product-listing/ 2554095 UL Recognized http://database.ul.com/cgi-bin/XYV/template/LISEXT/1FRAME/index.htm FILE E 172140 cUL Recognized http://database.ul.com/cgi-bin/XYV/template/LISEXT/1FRAME/index.htm FILE E 172140 ~~oe~~ RU C- EAC DE.A*30.B.01082 cULus Recognized ~~oo~~ Accessories Additional products Relay base - RIF-4-BPT/3X21 - 2900961 RIF-4... relay base, for high-power relay with 2 or 3 PDTs or 3 N/O contacts, Push-in connection, plug-in option for input/suppressor modules, for mounting on NS 35/7,5 Relay base - RIF-4-BSC/3X21 - 2900960 RIF-4... relay base, for high-power relay with 2 or 3 changeover contacts or 3 N/O contacts, screw connection, plug-in option for input/interference suppression modules, for mounting on NS 35/7,5 12/29/2018 Page 5 / 6 https://www.phoenixcontact.com/in/products/2903703 Phoenix Contact 2018 © - all rights reserved http://www.phoenixcontact.com 12/29/2018 Page 6 / 6
Updated at June 10, 2026
Phoenix Contact is a global leader in industrial connection technology, automation systems, and electronic interface solutions. With decades of engineering heritage originating in Germany, the company develops robust components designed to ensure reliable power, data, and signal transmission across demanding manufacturing and industrial environments. The cornerstone of the Phoenix Contact portfolio is its industry-leading selection of connection technologies. The range features an exceptional variety of terminal blocks, including pluggable headers and sockets, highly reliable wire-to-board solutions, and versatile DIN rail terminal blocks. These foundational connectivity components are supported by a comprehensive ecosystem of power distribution blocks, interface modules, marking systems, and accessories engineered for seamless control cabinet wiring. Beyond physical connectivity, Phoenix Contact provides critical components for advanced automation, control, and system protection. The wider offering encompasses a broad spectrum of process controllers, high-efficiency AC/DC converters, and a comprehensive suite of power, safety, and solid-state relays. From precision signal converters and electronic circuit breakers to fiber optic cable assemblies, Phoenix Contact equips engineers with the high-performance technologies required to build secure, highly efficient, and future-ready industrial systems.
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