# Safety Relay, 24 VDC, SPST-NO, PSRmini Series, DIN Rail, 5 A, Screw

![Product image](https://novapart.co/image/farnell:3286118/)

**URL**: https://novapart.co/products/2904664/safety-relay-24-vdc-spst-no-psrmini-series-din
**SKU**: 2904664
**Manufacturer**: PHOENIX CONTACT
**Category**: Switches & Relays || Relays || Safety Relays
**Price**: €262.3000
**Stock**: 10+
**Lead Time**: 36 days (indicative)

## Specifications

| Parameter | Value |
|---|---|
| Svhc | Lead (04-Feb-2026) |
| Ip Rating | IP20, IP54 |
| Coil Voltage | 24VDC |
| Product Range | PSRmini Series |
| Relay Mounting | DIN Rail |
| Contact Current | 5A |
| Relay Terminals | Screw |
| Contact Material | Silver Nickel |
| Contact Configuration | SPST-NO |
| Contact Voltage Ac Nom | 250V |
| Contact Voltage Dc Nom | 125V |

## Datasheet

📄 [Download PDF](https://novapart.co/datasheet/farnell:3286118/)

https://www.phoenixcontact.com/gb/products/2904664 

## Coupling relay - PSR-PC50-1NO-1DO-24DC-SC - 2904664 

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) 

Coupling relay for SIL 3 low demand applications, couples digital output signals to the periphery, 1 enabling current path, module for F&G applications, test pulse filter, plug-in screw connection, 17.5 mm width 

## Your advantages 

Up to SIL 3 according to IEC 61508 

- Easy proof test according to IEC 61508 thanks to integrated signal contact 

- Installation in zone 2 permitted 

Couples digital output signals from failsafe controllers to I/O devices (valves, etc.) for electrical isolation and power adaptation 

## Key Commercial Data 

~~Qe~~ Packing unit 1 pc GTIN ~~I~~ GTIN 4046356919937 ~~GO~~ Weight per Piece (excluding packing) 221.100 g ~~GO~~ Custom tariff number 85364900 ~~QO Qe~~ Country of origin Germany 

## Technical data 

## Note 

EMC: class A product, see manufacturer's declaration in the download Utilization restriction area 

## Dimensions 

Width 17.5 mm Height 112.2 mm Depth 114.5 mm Ambient conditions Ambient temperature (operation) -20 °C ... 55 °C ~~a D~~ 02/27/2020   Page 1 / 6 

https://www.phoenixcontact.com/gb/products/2904664 

## Coupling relay - PSR-PC50-1NO-1DO-24DC-SC - 2904664 

## Technical data 

## Ambient conditions 

|Ambient conditions||
|---|---|
|Ambient temperature (storage/transport)|-40 °C ... 65 °C|
|Max. permissible relative humidity (operation)|75 % (on average, 85% infrequently, non-condensing)|
|Max. permissible humidity (storage/transport)|75 % (on average, 85% infrequently, non-condensing)|
|Maximum altitude|≤ 2000 m (Above sea level)|
|Power supply||
|Rated control circuit supply voltage US|24 V DC -15 % / +10 % (A1/A2)|
||20.4 V DC ... 26.4 V DC|
|Rated control supply current IS|typ. 65 mA (A1/A2)|
|Inrush current|≤ 200 mA (A1/A2)|
|Filter time|< 2 ms (Test pulse duration)|
||≥ 100 ms (Test pulse rate)|
|Diagnostic supply voltage UD|24 V DC -15 % / +10 % (24V/A2)|
|Input current at UD|typ. 15 mA (24V/A2; depending on load M1 +100 mA)|
|Inrush current at UD|2.5 A (24V/A2; for 10 µs)|
|Protective circuit|Overload protection Suppressor diode|
|Digital inputs||
|Number of inputs|3 (Test point for proof test)|
|Inrush current|200 mA (Inputs TP1, TP2 and TP3)|
|Current consumption|typ. 20 mA (Input TP1)|
||typ. 18 mA (Input TP2)|
||typ. 35 mA (Input TP3)|
|Relay outputs: enabling current path||
|Output name<br>Enabling current path<br>Output description<br>safety-related N/O contacts<br>Number of outputs<br>1 (undelayed)<br>Contact type<br>1 enabling current path<br>Contact material<br>AgNi, gold-flashed<br>Switching voltage<br>min. 15 V AC/DC without diagnostics<br>min. 20 V AC/DC (with diagnostics)<br>max. 250 V AC<br>max. 125 V DC<br>Limiting continuous current<br>5 A<br>Inrush current<br>min. 100 mA<br>max. 5 A<br>Switching capacity<br>min. 1.5 W<br>Switching frequency<br>max. 0.5 Hz<br>Diagnostic threshold<br>20 Ω ... 18 kΩ (lower/upper)<br>Max. permissible overall conductor resistance<br>< 10 Ω (LO/LO' and NI/NI' and load resistance in the event of a short<br>circuit)<br>~~_=~~||
||02/27/2020   Page 2 / 6|



https://www.phoenixcontact.com/gb/products/2904664 

## Coupling relay - PSR-PC50-1NO-1DO-24DC-SC - 2904664 

## Technical data 

Relay outputs: enabling current path 

|Relay outputs: enabling current path||
|---|---|
|Mechanical service life|approx. 5x 10<br>7cycles|
|Alarm outputs||
|Output description<br>non-safety-related<br>Number of outputs<br>1 (digital)<br>Voltage<br>23 V DC<br>Current<br>max. 100 mA<br>Short-circuit protection<br>no<br>Output fuse<br>150 mA fast blow<br>~~=~~||
|Times||
|Typical pickup time at US|30 ms (when controlled via A1)|
|Typical release time at US|30 ms (when controlled via A1)|
|Recovery time|1 s|
|General||
|Relay type<br>Electromechanical relay with forcibly guided contacts in accordance with<br>EN 50205<br>Nominal operating mode<br>100% operating factor<br>Net weight<br>221.1 g<br>Mounting position<br>vertical or horizontal<br>Mounting type<br>DIN rail mounting<br>Degree of protection<br>IP20<br>Min. degree of protection of inst. location<br>IP54<br>Housing material<br>PBT<br>Housing color<br>yellow<br>Operating voltage display<br>Yellow LED<br>Status display<br>Green LED<br>Indication<br>Red LED<br>~~_~~||
|Connection data||
|Connection method|Screw connection|
|pluggable|Yes|
|Conductor cross section solid min.|0.2 mm²|
|Conductor cross section solid max.|2.5 mm²|
|Conductor cross section flexible min.|0.2 mm²|
|Conductor cross section flexible max.|2.5 mm²|
|Conductor cross section AWG min.|24|
|Conductor cross section AWG max.|12|
|Stripping length|7 mm|
|Screw thread|M3|



Safety-related characteristic data 

Designation IEC 61508 - Low demand ~~a~~ 

02/27/2020   Page 3 / 6 

https://www.phoenixcontact.com/gb/products/2904664 

## Coupling relay - PSR-PC50-1NO-1DO-24DC-SC - 2904664 

## Technical data 

## Safety-related characteristic data 

|Designation|Air clearances and creepage distances between the power circuits|
|---|---|
|Standards/regulations|DIN EN 50178|
|Rated insulation voltage|250 V AC|
|Rated surge voltage/insulation|6 kV/safe isolation (through protective impedance)|
|Degree of pollution|2|
|Overvoltage category|III|
|Shock|15g|
|Vibration (operation)|2g|
|Conformance|CE-compliant|
|ATEX| II 3 G Ex nA nC IIC T4 Gc|
|IECEx|Ex nA nC IIC T4 Gc|
|UL, USA/Canada|cULus|
||Class I, Zone 2, AEx nA nC IIC T4 / Ex nA nC IIC Gc T4 X|
||Class I, Div. 2, Groups A, B, C, D, T4|
|GL|C, EMC2|
|Environmental simulation test|ISA-S71.04 (G3)|



## Standards and Regulations 

## 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”,<br>Category “Manufacturer's declaration”|



## Drawings 

02/27/2020   Page 4 / 6 

https://www.phoenixcontact.com/gb/products/2904664 

## Coupling relay - PSR-PC50-1NO-1DO-24DC-SC - 2904664 

Block diagram 

## Classifications 

eCl@ss 

|eCl@ss 4.0|eCl@ss 4.0|40020600|
|---|---|---|
|eCl@ss 4.1|eCl@ss 4.1|40020600|
|eCl@ss 5.0|eCl@ss 5.0|27371900|
|eCl@ss 5.1|eCl@ss 5.1|27371900|
|eCl@ss 6.0|eCl@ss 6.0|27371800|
|eCl@ss 7.0|eCl@ss 7.0|27371819|
|eCl@ss 8.0|eCl@ss 8.0|27371819|
|eCl@ss 9.0|eCl@ss 9.0|27371819|



## ETIM 

|ETIM 4.0|ETIM 4.0|EC001449|
|---|---|---|
|ETIM 5.0|ETIM 5.0|EC001449|
|ETIM 6.0|ETIM 6.0|EC001449|
|ETIM 7.0|ETIM 7.0|EC001449|



## Approvals 

## Approvals 

## Approvals 

GL / UL Listed / cUL Listed / Functional Safety / EAC / cULus Listed 

## Ex Approvals 

IECEx / ATEX / UL Listed / cUL Listed / cULus Listed 

02/27/2020   Page 5 / 6 

https://www.phoenixcontact.com/gb/products/2904664 

## Coupling relay - PSR-PC50-1NO-1DO-24DC-SC - 2904664 

## Approvals 

Approval details 

GL https://approvalfinder.dnvgl.com/ 11253-14 HH  ~~oe~~ UL Listed http://database.ul.com/cgi-bin/XYV/template/LISEXT/1FRAME/index.htm FILE E 140324  cUL Listed http://database.ul.com/cgi-bin/XYV/template/LISEXT/1FRAME/index.htm FILE E 140324  Functional Safety 968/FSP 1011.00/14  ~~oe~~ RU C- EAC DE.A*30.B.01082  cULus Listed  

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

02/27/2020   Page 6 / 6 



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- [Supplier page](https://es.farnell.com/phoenix-contact/psr-pc50-1no-1do-24dc-sc/safety-relay-spst-24vdc-5a-din/dp/3286118)
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