2908181
Power Relay, DPDT, 24 VDC, 8 A, REL-MR-BL Series, Through Hole
- Manufacturer: PHOENIX CONTACT
- Product type: Power Relays
- SVHC: No SVHC (04-Feb-2026)
- Coil Type: -
- Coil Voltage: 24VDC
- Product Range: REL-MR-BL Series
- Relay Mounting: Through Hole
- Coil Resistance: -
- Contact Current: 8A
- Relay Terminals: Solder
- Contact Material: Silver Nickel
- Contact Voltage VAC: 250V
- Contact Voltage VDC: 250V
- Contact Configuration: DPDT
| Delivery and price | |
|---|---|
| Units per pack | 10 |
| Price | 4.91 € |
| Current stock | 10+ |
| Lead time | 30 days |
https://www.phoenixcontact.com/pi/products/2908181 ## Single relay - REL-MR-BL-24DC/21-21/MS - 2908181 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 relay, with power contact, 2 changeover contacts, test button, mechanical switch position indicator, polarity: bipolar, input voltage: 24 V DC Key Commercial Data ~~OO~~ Packing unit 10 pc ~~GO~~ Minimum order quantity 10 pc GTIN ~~pA a~~ GTIN 4055626279404 ## Technical data ## Dimensions |Width|13 mm| |---|---| |Height|29 mm| |Depth|25.5 mm| |Ambient conditions|| |Ambient temperature (operation)|-40 °C ... 70 °C| |Ambient temperature (storage/transport)|-40 °C ... 85 °C| |Coil side|| |Depth<br>Ambient conditions<br>Ambient temperature (operation)<br>Ambient temperature (storage/transport)<br>Coil side|25.5 mm<br>-40 °C ... 70 °C<br>-40 °C ... 85 °C| |---|---| |Nominal input voltage UN|24 V DC| |Input voltage range in reference to UN|0.8 ... 2.2 (see diagram)| |Typical input current at UN|17 mA| |Typical response time|9 ms| |Typical release time|6 ms| |Power dissipation for nominal condition|0.41 W| Contact side Contact type 2 PDT ~~a~~ 05/16/2019 Page 1 / 4 https://www.phoenixcontact.com/pi/products/2908181 ## Single relay - REL-MR-BL-24DC/21-21/MS - 2908181 ## Technical data ## Contact side |Contact side|| |---|---| |Type of switch contact|Single contact| |Contact material|AgNi| |Maximum switching voltage|250 V AC/DC| |Minimum switching voltage|12 V (at 10 mA)| |Min. switching current|10 mA (at 12 V)| |Maximum inrush current|16 A (20 ms)| |Limiting continuous current|8 A| |Interrupting rating (ohmic load) max.|192 W (at 24 V DC)| ||62 W (at 48 V DC)| ||42 W (at 60 V DC)| ||55 W (at 110 V DC)| ||66 W (at 220 V DC)| |General|| |Test voltage relay winding/relay contact|5 kV AC (50 Hz, 1 min.)| |Test voltage PDT/PDT|2.5 V AC (50 Hz, 1 min.)| |Operating mode|100% operating factor| |Degree of protection|RT II| |Mechanical service life|5x 10<br>6cycles| |Service life, electrical|see diagram| |Mounting position|any| |Standards and Regulations|| |Standards/regulations<br>Rated insulation voltage<br>Degree of pollution<br>Overvoltage category<br>Environmental Product Compliance<br>China RoHS<br>~~=~~|IEC 61810<br>IEC 60664<br>250 V AC<br>2<br>III<br>Environmentally friendly use period: unlimited = EFUP-e<br>No hazardous substances above threshold values<br>~~=~~| Drawings 05/16/2019 Page 2 / 4 https://www.phoenixcontact.com/pi/products/2908181 ## Single relay - REL-MR-BL-24DC/21-21/MS - 2908181 **==> picture [35 x 9] intentionally omitted <==** **----- Start of picture text -----**<br> Diagram<br>**----- End of picture text -----**<br> **==> picture [170 x 121] intentionally omitted <==** **----- Start of picture text -----**<br> | 107 Sse<br>106 EEE EEE EE EEE EE EEE<br>LtReSS<br>REE SSS aaa aa a==<br> EERE EH<br>105<br>_————Ppx@r<br>Sea ————Saaaaaaaaeaaa— — —<br>104 ooLEEETELT PETE rr rte<br>0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16<br>Switching current [A]<br>eo 250 V AC, ohmic load —<br>Cycles<br>**----- End of picture text -----**<br> **==> picture [35 x 9] intentionally omitted <==** **----- Start of picture text -----**<br> Diagram<br>**----- End of picture text -----**<br> **==> picture [177 x 99] intentionally omitted <==** **----- Start of picture text -----**<br> 2,6<br>2,4<br>Hp<br>2,2<br>2 Pet tet<br>S ||<br>1,8 [oer ft<br>ge 1,6<br>a 1,4<br>S&S a 1,2 | GI<br>1<br>0,8 eee See—<br>0,60 oe 10 20 30 40 50 60 70 80 90 100<br>N<br>**----- End of picture text -----**<br> Electrical service life Operating voltage range **==> picture [35 x 10] intentionally omitted <==** **----- Start of picture text -----**<br> Diagram<br>**----- End of picture text -----**<br> ## Diagram **==> picture [173 x 99] intentionally omitted <==** **----- Start of picture text -----**<br> 2010 Br Vee<br>5<br>2<br>E2 1 NT|SON br re ee<br>0,5 st eS<br>BR (eSee<br>0,2 asaeiias<br>0,1 IE ice<br>10 20 30 LTTE 50 70 100 200 ET 300 400500<br>**----- End of picture text -----**<br> **==> picture [171 x 97] intentionally omitted <==** **----- Start of picture text -----**<br> 1<br>0,9<br>0,8<br>oe! 0,7 [><br>si 0,6 |] | | | IN’ J<br>3 0,5<br>0,4<br>po<br>e 0,3 | | | | [| [| | | \<br>1 0,9 0,8 0,7 0,6 0,5 0,4 0,3 0,2<br>COS<br>**----- End of picture text -----**<br> Interrupting rating Service life reduction factor with various cos phi ## Circuit diagram **==> picture [123 x 25] intentionally omitted <==** **----- Start of picture text -----**<br> | A1 12 11 14 |<br>|<br>| A2 22 21 24 |<br>**----- End of picture text -----**<br> ## Approvals ## Approvals ## Approvals UL Recognized / cUL Recognized / EAC / cULus Recognized 05/16/2019 Page 3 / 4 https://www.phoenixcontact.com/pi/products/2908181 ## Single relay - REL-MR-BL-24DC/21-21/MS - 2908181 ## Approvals Ex Approvals ## Approval details > UL Recognized http://database.ul.com/cgi-bin/XYV/template/LISEXT/1FRAME/index.htm FILE E 195083 > cUL Recognized http://database.ul.com/cgi-bin/XYV/template/LISEXT/1FRAME/index.htm FILE E 195083 RU C- EAC DE.A*30.B.01082 ~~oe~~ > cULus Recognized Phoenix Contact 2019 © - all rights reserved http://www.phoenixcontact.com PHOENIX CONTACT GmbH & Co. KG Flachsmarktstr. 8 32825 Blomberg Germany Tel. +49 5235 300 Fax +49 5235 3 41200 http://www.phoenixcontact.com 05/16/2019 Page 4 / 4
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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