# Power Relay, 4PDT, 48 VDC, 2 A, REL-IR4/LDP Series, Socket

![Product image](https://novapart.co/image/farnell:3256171/)

**URL**: https://novapart.co/products/2903678/power-relay-4pdt-48-vdc-2-a-rel-ir4-ldp-series
**SKU**: 2903678
**Manufacturer**: PHOENIX CONTACT
**Category**: Switches & Relays || Relays || Power Relays
**Price**: €8.5300
**Stock**: 10+
**Lead Time**: 141 days (indicative)

## Specifications

| Parameter | Value |
|---|---|
| Svhc | No SVHC (04-Feb-2026) |
| Coil Type | - |
| Coil Voltage | 48VDC |
| Product Range | REL-IR4/LDP Series |
| Relay Mounting | Socket |
| Coil Resistance | - |
| Contact Current | 2A |
| Relay Terminals | Quick Connect |
| Contact Material | Silver Nickel |
| Contact Voltage Vac | 250V |
| Contact Voltage Vdc | 250V |
| Contact Configuration | 4PDT |

## Datasheet

📄 [Download PDF](https://novapart.co/datasheet/farnell:3256171/)

https://www.phoenixcontact.com/in/products/2903678 

## Single relay - REL-IR4/LDP- 48DC/4X21 - 2903678 

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 industrial relay with power contacts, 4 PDTs, test key, status LED, freewheeling diode, mechanical switch position indicator, polarity: A1+, A2-, coil voltage: 48 V DC 

## Key Commercial Data 

|Key Commercial Data||
|---|---|
|Packing unit<br>~~GO~~|10 pc<br>~~GO~~|
|Minimum order quantity<br>~~Ge~~|10 pc<br>~~Ge~~|
|GTIN<br>~~pC~~<br>~~a~~|~~pC~~<br>~~GO~~|
|GTIN<br>~~a~~|4046356758918<br>~~GO~~|
|Weight per Piece (excluding packing)<br>~~a~~<br>~~a~~|34.200 g<br>~~GO~~<br>~~G~~|
|Custom tariff number<br>~~GO~~|85364190<br>~~GO~~|
|Country of origin<br>~~Ge~~|Poland<br>~~Ge~~|



## Technical data 

## Dimensions 

|Width|21.2 mm|
|---|---|
|Height|27.5 mm|
|Depth|35.6 mm|
|Ambient conditions||
|Ambient temperature (operation)|-40 °C ... 70 °C|
|Ambient temperature (storage/transport)|-40 °C ... 85 °C|
|Coil side||
|Nominal input voltage UN|48 V DC|
|Input voltage range in reference to UN|see diagram|
|Typical input current at UN|22 mA|
|Typical response time|13 ms|
|Typical release time|14 ms|



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https://www.phoenixcontact.com/in/products/2903678 

## Single relay - REL-IR4/LDP- 48DC/4X21 - 2903678 

## Technical data 

Coil side 

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**----- Start of picture text -----**<br>
|||
|---|---|
|Protective circuit|Damping diode|
|Status display|Yellow LED|
|Power dissipation for nominal condition|1.06 W|
|——————|
|Contact side|
|Contact type|4 PDTs|
|Type of switch contact|Single contact|
|Contact material|AgNi|
|Maximum switching voltage|250 V AC/DC|
|Minimum switching voltage|5 V (At 24 mA)|
|Min. switching current|5 mA (at 24 V)|
|Maximum inrush current|16 A (20 ms, N/O contact)|
|Limiting continuous current|6 A|
|Interrupting rating (ohmic load) max.|144 W (at 24 V DC)|
|124 W (at 48 V DC)|
|108 W (at 60 V DC)|
|52 W (at 110 V DC)|
|48 W (at 220 V DC)|
|1500 VA (for 250 V AC)|
|Switching capacity min.|0.12 W|
|Switching capacity|2 A (at 24 V, DC13)|
|0.22 A (at 120 V, DC13)|
|0.11 A (at 250 V, DC13)|
|1.5 A (at 24 V, AC15)|
|1.5 A (at 120 V, AC15)|
|1 A (at 240 V, AC15)|
|Switching capacity according to IEC 60947-5-1|2 A (at 24 V, DC13)|
|0.22 A (at 120 V, DC13)|
|0.11 A (at 250 V, DC13)|
|1.5 A (at 24 V, AC15)|
|1.5 A (at 120 V, AC15)|
|1 A (at 240 V, AC15)|
|Motor load according to UL 508|1/3 HP, 240 V AC|
|General|
|Test voltage relay winding/relay contact|2.5 kVrms (50 Hz, 1 min.)|
|Test voltage PDT/PDT|2 kVrms (50 Hz, 1 min.)|
|Operating mode|100% operating factor|
|Degree of protection|RT I|
|Mechanical service life|approx. 2x 107 cycles|
|Mounting position|any|

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


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https://www.phoenixcontact.com/in/products/2903678 

## Single relay - REL-IR4/LDP- 48DC/4X21 - 2903678 

## Technical data 

## Standards and Regulations 

|Connection in acc. with standard|CSA|
|---|---|
|Standards/regulations|IEC 60664|
||IEC 61810|
|Rated insulation voltage|250 V AC|
|Rated surge voltage|2.5 kV|
|Insulation|Basic insulation|
|Degree of pollution|2|
|Overvoltage category|II|



## Environmental Product Compliance 

|China RoHS|Environmentally Friendly Use Period = 50|
|---|---|
||For details about hazardous substances go to tab “Downloads”,<br>Category “Manufacturer's declaration”|



## Drawings 

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


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


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20<br>10 11 14 12<br>6 ft | yd doe) A1<br>4 ————_-=. | 21 24 22 !<br>2 Soree ee r || eta | |<br>1 | 31 34 4 32 |<br>A2<br>0,5 —————— | | Ne@ | 41 eeea ee 44 42<br>0,30,2 eea OOO \f———- === |<br>0,1 Pt EET TE<br>10 20 30 50 70 100 200 300<br>Switching voltage [V] — _<br>° AC, ohmic load<br>e DC, ohmic load<br>Switching current [A]<br>**----- End of picture text -----**<br>


Interrupting rating 

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


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2,42,2 P| | ft [| ft fy<br>2<br>pf | f | f |<br>1,8<br>1,6<br>eos<br>1,4<br>1,2 |). oo SF<br>1<br>FEE PRET<br>0,8<br>———a a<br>0,6<br>0 10 20 30 40 50 60 70 80<br>N<br>**----- End of picture text -----**<br>


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Diagram<br>107 S—$—————————<br>a<br>106 Co<br>_— a<br>———<br>105 CS™<br>0 1 2 3<br>Cycles<br>**----- End of picture text -----**<br>


Operating voltage range 

Electrical service life 

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https://www.phoenixcontact.com/in/products/2903678 

## Single relay - REL-IR4/LDP- 48DC/4X21 - 2903678 

## Diagram 

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**----- 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 / VDE Zeichengenehmigung / EAC / cULus Recognized 

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https://www.phoenixcontact.com/in/products/2903678 

## Single relay - REL-IR4/LDP- 48DC/4X21 - 2903678 

## 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~~ http://www2.vde.com/de/Institut/Online-Service/ VDE Zeichengenehmigung 40040427 VDE-gepruefteProdukte/Seiten/Online-Suche.aspx  RU C- EAC DE.A*30.B.01082  

> cULus Recognized  ~~ee~~ Accessories Accessories 

Relay socket 

Relay base - RIF-2-BPT/4X21 - 2900934 

RIF-2... relay base, for industrial relay with 2 or 4 PDTs, push-in connection, plug-in option for input/suppressor modules, for mounting on NS 35/7,5 

Phoenix Contact 2018 © - all rights reserved http://www.phoenixcontact.com 

12/29/2018   Page 5 / 5 



## Links

- [View this product on Novapart](https://novapart.co/products/2903678/power-relay-4pdt-48-vdc-2-a-rel-ir4-ldp-series)
- [Request a quote for this part](https://novapart.co/quote/)
- [Supplier page](https://es.farnell.com/phoenix-contact/rel-ir4-ldp-48dc-4x21/power-relay-4pdt-2a-250v/dp/3256171)
---

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