2909644
Power Relay, SPDT, 12 VDC, 3 A, REL-MR Series, Through Hole
- Manufacturer: PHOENIX CONTACT
- Product type: Power Relays
- SVHC: No SVHC (25-Jun-2025)
- Coil Type: -
- Coil Voltage: 12VDC
- Product Range: REL-MR Series
- Relay Mounting: Through Hole
- Coil Resistance: 848ohm
- Contact Current: 3A
- Relay Terminals: Solder
- Contact Material: Silver Tin Oxide
- Contact Voltage VAC: 250V
- Contact Voltage VDC: 250V
- Contact Configuration: SPDT
| Delivery and price | |
|---|---|
| Units per pack | 10 |
| Price | 10.05 € |
| Current stock | 10+ |
| Lead time | 30 days |
https://www.phoenixcontact.com/us/products/2909644 ## Single relay - REL-MR- 12DC/21AU/MS - 2909644 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 miniature power relay, with multi-layer gold contact, 1 changeover contact, manual operation, 12 V DC input voltage The figure shows the 24 V DC version ## Key Commercial Data Packing unit 1 ~~a Ge~~ GTIN 4°055626°377698 ~~YT~~ GTIN 4055626377698 ~~SS~~ Custom tariff number ~~|~~ 85364190 ~~ee~~ ## Technical data ## Dimensions **==> picture [325 x 88] intentionally omitted <==** **----- Start of picture text -----**<br> ||| |---|---| |Width|5 mm| |Height|28 mm| |Depth|16 mm| |Ambient conditions| |Ambient temperature (operation)|-40 °C ... 85 °C| |Ambient temperature (storage/transport)|-40 °C ... 85 °C| **----- End of picture text -----**<br> Ambient conditions ## Coil side **==> picture [315 x 55] intentionally omitted <==** **----- Start of picture text -----**<br> ||| |---|---| |Nominal input voltage UN|12 V DC| |Input voltage range in reference to UN|see diagram| |Typical input current at UN|14 mA| |Typical response time|5 ms| **----- End of picture text -----**<br> 07/18/2017 Page 1 / 6 https://www.phoenixcontact.com/us/products/2909644 ## Single relay - REL-MR- 12DC/21AU/MS - 2909644 ## Technical data |Typical release time<br>Coil resistance<br>Power dissipation for nominal condition<br>Contact side<br>~~——————~~|2.5 ms<br>848 Ω ±10 % (at 20 °C)<br>0.17 W<br>~~——————~~| |---|---| |Contact type|1 PDT| |Type of switch contact|Single contact| |Contact material|AgSnO, hard gold-plated| |Maximum switching voltage|30 V AC| ||36 V DC| |Minimum switching voltage|100 mV (at 10 mA)| |Min. switching current|1 mA (at 24 V)| |Maximum inrush current|50 mA| |Limiting continuous current|50 mA| |Interrupting rating (ohmic load) max.|1.2 W (at 24 V DC)| Contact side (with destroyed gold layer) |Min. switching current<br>Maximum inrush current<br>Limiting continuous current<br>Interrupting rating (ohmic load) max.<br>Contact side (with destroyed gold layer)|1 mA (at 24 V)<br>50 mA<br>50 mA<br>1.2 W (at 24 V DC)| |---|---| |Contact material|AgSnO| |Note|the following values are applicable if a gold layer is destroyed| |Maximum switching voltage|250 V AC/DC| |Minimum switching voltage|5 V (at 100 mA)| |Limiting continuous current|6 A| |Min. switching current|10 mA (at 12 V)| |Interrupting rating (ohmic load) max.|140 W (at 24 V DC)| ||20 W (at 48 V DC)| ||18 W (at 60 V DC)| ||23 W (at 110 V DC)| ||40 W (at 220 V DC)| ||1500 VA (for 250 V AC)| |Switching capacity in acc. with DIN VDE 0660/IEC 60947|2 A (at 24 V, DC13)| ||0.2 A (at 110 V, DC13)| ||0.1 A (at 220 V, DC13)| ||3 A (at 24 V, AC15)| ||3 A (at 120 V, AC15)| ||3 A (at 230 V, AC15)| 07/18/2017 Page 2 / 6 https://www.phoenixcontact.com/us/products/2909644 ## Single relay - REL-MR- 12DC/21AU/MS - 2909644 ## Technical data ## General |Degree of protection|RT II (flux-proof)| |---|---| |Mechanical service life|1 x 10<br>7cycles| |Mounting position|any| |Assembly instructions|In rows with zero spacing| ## Standards and Regulations |Standards/regulations|IEC 60664| |---|---| ||EN 50178| ||EN 61810-1| |Degree of pollution|3| |Overvoltage category|III| ## Environmental Product Compliance |China RoHS|Environmentally Friendly Use Period = 50| |---|---| ||For details about hazardous substances go to tab “Downloads”, Category<br>“Manufacturer's declaration”| ## Drawings ## Diagram ## Drilling diagram **==> picture [166 x 41] intentionally omitted <==** **----- Start of picture text -----**<br> 1 1,3 > 1,9<br>rani ivewavels eeseeviel<br>1,2 PEE TE TT EE<br>**----- End of picture text -----**<br> a = pitch division 1.25 mm and 1.27 mm Interrupting rating 07/18/2017 Page 3 / 6 https://www.phoenixcontact.com/us/products/2909644 ## Single relay - REL-MR- 12DC/21AU/MS - 2909644 Circuit diagram **==> picture [118 x 5] intentionally omitted <==** **----- Start of picture text -----**<br> A2 A1 12 11 14<br>**----- End of picture text -----**<br> ## Classifications |eCl@ss<br>eCl@ss 5.0<br>27371601<br>eCl@ss 5.1<br>27371601<br>eCl@ss 6.0<br>27371601<br>eCl@ss 7.0<br>27371601<br>eCl@ss 8.0<br>27371601<br>eCl@ss 9.0<br>27371601<br>~~SS~~| |---| |ETIM<br>ETIM 2.0<br>EC001437<br>ETIM 3.0<br>EC001437<br>ETIM 4.0<br>EC001437<br>ETIM 5.0<br>EC001437<br>ETIM 6.0<br>EC001437<br>~~SSS~~| |UNSPSC<br>UNSPSC 6.01<br>30211916<br>UNSPSC 7.0901<br>39121515<br>UNSPSC 11<br>39121515<br>UNSPSC 12.01<br>39121515<br>UNSPSC 13.2<br>39122334<br>~~SSS~~| |Approvals| |Approvals| ## Approvals UL Recognized / cUL Recognized / cULus Recognized 07/18/2017 Page 4 / 6 https://www.phoenixcontact.com/us/products/2909644 ## Single relay - REL-MR- 12DC/21AU/MS - 2909644 ## Approvals Ex Approvals Approval details > UL Recognized http://database.ul.com/cgi-bin/XYV/template/LISEXT/1FRAME/index.htm FILE E 228652 ~~oo~~ > cUL Recognized http://database.ul.com/cgi-bin/XYV/template/LISEXT/1FRAME/index.htm FILE E 228652 ~~oo~~ > cULus Recognized http://database.ul.com/cgi-bin/XYV/template/LISEXT/1FRAME/index.htm ~~ee~~ Accessories Additional products Relay socket - PLC-BPT- 12DC/21 - 2900444 6.2 mm PLC basic terminal block with push-in connection, without relay or solid-state relay, for mounting on DIN rail NS 35/7,5, 1 PDT, input voltage 12 V DC Relay socket - PLC-BSP- 12DC/21 - 2967426 6.2 mm PLC basic terminal block with spring-cage connection, without relay or solid-state relay, for mounting on DIN rail NS 35/7,5, 1 PDT, input voltage 12 V DC 07/18/2017 Page 5 / 6 https://www.phoenixcontact.com/us/products/2909644 ## Single relay - REL-MR- 12DC/21AU/MS - 2909644 ## Accessories Relay socket - PLC-BSC- 12DC/21 - 2966896 6.2 mm PLC basic terminal block with screw connection, without relay or solid-state relay, for mounting on DIN rail NS 35/7,5, 1 PDT, input voltage 12 V DC ~~So~~ Relay socket - RIF-0-BPT/21 - 2900958 RIF-0... relay base, for miniature power relay with 1 PDT or solid-state relays of the same design, push-in connection, for mounting on NS 35/7,5 és Relay socket - RIF-0-BSC/21 - 2900957 RIF-0... relay base, for miniature power relay with 1 changeover contact or identical solid-state relays, screw connection, for mounting on NS 35/7,5 ~~a~~ Phoenix Contact 2017 © - all rights reserved http://www.phoenixcontact.com 07/18/2017 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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