2974901

MULTIPLE RELAY MODULE, SPDT, 5A, 250V

⚠️ Reference pricing provided. In case of supply shortages, we will connect you with our trusted procurement partners to ensure your project's continuity.

Manufacturer: PHOENIX CONTACT
Product type: Controller Accessories
SVHC: Hexahydromethylphthalic anhydride [1], Hexahydro-4-methylphthalic anhydride [2], Hexahydro-1-methylphthalic anhydride[3] (04-Feb-2026)
Product Range: VARIOFACE UMK
Current Rating: 5A

Delivery and price
Units per pack	1
Price	242.92 €
Current stock	10+
Lead time	30 days

Datasheet

https://www.phoenixcontact.com/gb/products/2974901 

## Active module - UMK-16 RELS/KSR-G24/21/PLC - 2974901 

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) 

VARIOFACE output module, with plug-in bases for 16 miniature relays, 1 PDT each, for 24 V DC (basic module, without relays) 

## Your advantages 

- LED status indicator per signal path and supply voltage 

- Freewheeling and polarity protection diode for each signal path 

- Plug-in miniature relays each with a PDT contact 

## Key Commercial Data 

|Key Commercial Data||
|---|---|
|Packing unit|1 pc|
|GTIN||
|GTIN|4017918089009|
|Weight per Piece (excluding packing)|380.900 g|
|Custom tariff number|85364190|
|Country of origin|Germany|
|Note|Made to Order (non-returnable)|



## Technical data 

## Note 

|Utilization restriction|EMC: class A product, see manufacturer's declaration in the download|
|---|---|
||area|
|Dimensions||
|Width|259 mm|
|Height|77 mm|
|Depth|59 mm|
|Ambient conditions||
|Ambient temperature (operation)|-20 °C ... 50 °C|
|Ambient temperature (storage/transport)|-20 °C ... 70 °C|



01/02/2020   Page 1 / 6 

https://www.phoenixcontact.com/gb/products/2974901 

## Active module - UMK-16 RELS/KSR-G24/21/PLC - 2974901 

## Technical data 

## Ambient conditions 

|Degree of protection<br>IP00|
|---|
|Input data|
|Nominal input voltage UN<br>24 V DC<br>Input voltage range in reference to UN<br>0.8 ... 1.1<br>Typical input current at UN<br>2 mA (Light indicator)<br>Type of protection<br>Free-wheeling diode<br>Protective circuit/component<br>Damping diode<br>Operating voltage display<br>Green LED<br>Status display/channel<br>Yellow LED<br>Output data<br>Contact type<br>1 PDT<br>Maximum switching voltage<br>250 V AC/DC<br>Limiting continuous current<br>5 A<br>~~a~~|
|General|
|No. of channels<br>16<br>32<br>Compatible components<br>Miniature relay, REL-MR- 24DC/21HC<br>With components<br>no<br>Mechanical service life<br>3x 10<br>7cycles<br>Operating mode<br>100% operating factor<br>Mounting position<br>any<br>Assembly instructions<br>In rows with zero spacing<br>Color<br>green<br>~~=~~|
|Connection data|
|Connection name<br>Coil side<br>Connection method<br>IDC/FLK pin strip<br>Number of connections<br>1<br>Number of positions<br>50<br>Pitch<br>2.54 mm<br>~~=—sS—~~|
|Connection data 2|
|Connection name<br>Contact side<br>Connection method<br>Screw connection<br>Stripping length<br>8 mm<br>Screw thread<br>M3<br>Number of connections<br>48<br>Conductor cross section solid<br>0.2 mm² ... 4 mm²<br>Conductor cross section flexible<br>0.2 mm² ... 2.5 mm²<br>Conductor cross section AWG<br>24 ... 12<br>~~=>~~|
|01/02/2020   Page 2 / 6|



https://www.phoenixcontact.com/gb/products/2974901 

## Active module - UMK-16 RELS/KSR-G24/21/PLC - 2974901 

## Technical data 

|Technical data||
|---|---|
|Connection data 3||
|Connection name<br>Supply<br>Connection method<br>Screw connection<br>Stripping length<br>8 mm<br>Screw thread<br>M3<br>Number of connections<br>4<br>Conductor cross section solid<br>0.2 mm² ... 4 mm²<br>Conductor cross section flexible<br>0.2 mm² ... 2.5 mm²<br>Conductor cross section AWG<br>24 ... 12<br>~~==~~||
|Connection data 4||
|Connection name|Connection for extension module|
|Connection method|IDC/FLK pin strip|
|Number of connections|1|
|Number of positions|20|
|Pitch|2.54 mm|
|Supported controller||
|Controller<br>SIEMENS S7-400<br>- suitable I/O card<br>6ES7 422-1BL00-0AA0<br>6ES7 422-7BL00-0AB0<br>Controller<br>ALLEN-BRADLEY ControlLogix<br>- suitable I/O card<br>1756-OB32<br>Controller<br>ALLEN-BRADLEY PLC 5<br>- suitable I/O card<br>1771 OBN<br>Controller<br>HONEYWELL Experion PKS C200<br>- suitable I/O card<br>TC-ODD 321<br>Controller<br>MITSUBISHI MELSEC Q<br>- suitable I/O card<br>QY81P<br>Controller<br>Schneider Electric Modicon TSX QUANTUM<br>- suitable I/O card<br>DDO 353<br>Controller<br>SIEMENS S7-300 / ET 200 M<br>- suitable I/O card<br>6ES7 322-1BL00-0AA0<br>Controller<br>GE-FANUC RX3i<br>- suitable I/O card<br>IC694MDL754<br>~~==~~||
|Standards and Regulations||
|Standards/regulations<br>DIN EN 50178<br>IEC 60664<br>Rated insulation voltage<br>260 V AC<br>Rated surge voltage<br>4 kV (Basic insulation between output contact current paths)<br>6 kV (Safe isolation and reinforced insulation between input circuit and<br>output contact paths)<br>Pollution degree<br>2<br>~~SSS~~||
||01/02/2020   Page 3 / 6|



https://www.phoenixcontact.com/gb/products/2974901 

## Active module - UMK-16 RELS/KSR-G24/21/PLC - 2974901 

## Technical data 

## Standards and Regulations 

**==> picture [490 x 82] intentionally omitted <==**

**----- Start of picture text -----**<br>
|||
|---|---|
|Overvoltage category|III|
|Environmental Product Compliance|
|REACh SVHC|Lead 7439-92-1|
|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>


## Drawings 

## Circuit diagram 

## Classifications 

## eCl@ss 

**==> picture [298 x 110] intentionally omitted <==**

**----- Start of picture text -----**<br>
|||
|---|---|
|eCl@ss 4.0|27371100|
|eCl@ss 4.1|27371100|
|eCl@ss 5.0|27371000|
|eCl@ss 5.1|27371000|
|eCl@ss 6.0|27371000|
|eCl@ss 7.0|27141152|
|eCl@ss 8.0|27141152|
|eCl@ss 9.0|27141152|

**----- End of picture text -----**<br>


ETIM 

**==> picture [300 x 22] intentionally omitted <==**

**----- Start of picture text -----**<br>
|||
|---|---|
|ETIM 5.0|EC002780|
|ETIM 6.0|EC002780|

**----- End of picture text -----**<br>


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https://www.phoenixcontact.com/gb/products/2974901 

## Active module - UMK-16 RELS/KSR-G24/21/PLC - 2974901 

## Classifications 

## ETIM 

ETIM 7.0 EC002780 

## UNSPSC 

**==> picture [298 x 124] intentionally omitted <==**

**----- Start of picture text -----**<br>
|||
|---|---|
|UNSPSC 6.01|30211916|
|UNSPSC 7.0901|39121515|
|UNSPSC 11|39121515|
|UNSPSC 12.01|39121515|
|UNSPSC 13.2|39121432|
|UNSPSC 18.0|39121432|
|UNSPSC 19.0|39121432|
|UNSPSC 20.0|39121432|
|UNSPSC 21.0|39121432|

**----- End of picture text -----**<br>


## Approvals 

## Approvals 

## Approvals 

UL Listed / cUL Listed / EAC / cULus Listed 

Ex Approvals 

## Approval details 

UL Listed http://database.ul.com/cgi-bin/XYV/template/LISEXT/1FRAME/index.htm FILE E 238705  cUL Listed http://database.ul.com/cgi-bin/XYV/template/LISEXT/1FRAME/index.htm FILE E 238705  ~~ee~~ RU C- EAC DE.A*30.B.01742  ~~oo~~ cULus Listed  ~~oo~~ 

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https://www.phoenixcontact.com/gb/products/2974901 

## Active module - UMK-16 RELS/KSR-G24/21/PLC - 2974901 

## Accessories 

Accessories Retaining bracket Retaining bracket - SIM-ERSN-HB-MR - 2271471 Retainer, for miniature relay ~~OF~~ Single relay Single relay - REL-MR- 24DC/21HC - 2961312 Plug-in miniature power relay, with power contact for high continuous currents, 1 PDT, input voltage 24 V DC 

## Additional products Active module - UMK-16 RELS/KSR-G24/21/E/PLC - 2974891 

VARIOFACE output extension module, with plug-in bases for 16 miniature relays, 1 PDT each, for 24 V DC (without relays) 

Phoenix Contact 2020 © - all rights reserved http://www.phoenixcontact.com 

01/02/2020   Page 6 / 6

Updated at April 11, 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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