# Power Relay, SPDT, 12 VDC, 3 A, REL-MR Series, Through Hole
**URL**: https://novapart.co/products/2909644/power-relay-spdt-12-vdc-3-a-rel-mr-series-through
**SKU**: 2909644
**Manufacturer**: PHOENIX CONTACT
**Category**: Switches & Relays || Relays || Power Relays
**Price**: €10.0500
**Stock**: 10+
## Specifications
| Parameter | Value |
|---|---|
| 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 |
## Datasheet
📄 [Download PDF](https://novapart.co/datasheet/farnell:3256188/)
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 -----**
|||
|---|---|
|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 -----**
Ambient conditions
## Coil side
**==> picture [315 x 55] intentionally omitted <==**
**----- Start of picture text -----**
|||
|---|---|
|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 -----**
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https://www.phoenixcontact.com/us/products/2909644
## Single relay - REL-MR- 12DC/21AU/MS - 2909644
## Technical data
|Typical release time
Coil resistance
Power dissipation for nominal condition
Contact side
~~——————~~|2.5 ms
848 Ω ±10 % (at 20 °C)
0.17 W
~~——————~~|
|---|---|
|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
Maximum inrush current
Limiting continuous current
Interrupting rating (ohmic load) max.
Contact side (with destroyed gold layer)|1 mA (at 24 V)
50 mA
50 mA
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
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
“Manufacturer's declaration”|
## Drawings
## Diagram
## Drilling diagram
**==> picture [166 x 41] intentionally omitted <==**
**----- Start of picture text -----**
1 1,3 > 1,9
rani ivewavels eeseeviel
1,2 PEE TE TT EE
**----- End of picture text -----**
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 -----**
A2 A1 12 11 14
**----- End of picture text -----**
## Classifications
|eCl@ss
eCl@ss 5.0
27371601
eCl@ss 5.1
27371601
eCl@ss 6.0
27371601
eCl@ss 7.0
27371601
eCl@ss 8.0
27371601
eCl@ss 9.0
27371601
~~SS~~|
|---|
|ETIM
ETIM 2.0
EC001437
ETIM 3.0
EC001437
ETIM 4.0
EC001437
ETIM 5.0
EC001437
ETIM 6.0
EC001437
~~SSS~~|
|UNSPSC
UNSPSC 6.01
30211916
UNSPSC 7.0901
39121515
UNSPSC 11
39121515
UNSPSC 12.01
39121515
UNSPSC 13.2
39122334
~~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
## Links
- [View this product on Novapart](https://novapart.co/products/2909644/power-relay-spdt-12-vdc-3-a-rel-mr-series-through)
- [Request a quote for this part](https://novapart.co/quote/)
- [Supplier page](https://es.farnell.com/phoenix-contact/rel-mr-12dc-21au-ms/power-relay-spdt-3a-250a/dp/3256188)
---
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