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

![Product image](https://novapart.co/image/farnell:3252367/)

**URL**: https://novapart.co/products/2700577/safety-relay-24-vdc-spst-no-nc-psrmini-series-din
**SKU**: 2700577
**Manufacturer**: PHOENIX CONTACT
**Category**: Switches & Relays || Relays || Safety Relays
**Price**: €159.6700
**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 Tin Oxide, Silver Copper Nickel |
| Contact Configuration | SPST-NO, SPST-NC |
| Contact Voltage Ac Nom | 250V |
| Contact Voltage Dc Nom | 250V |

## Datasheet

📄 [Download PDF](https://novapart.co/datasheet/farnell:3252367/)

https://www.phoenixcontact.com/gb/products/2700577 

## Coupling relay - PSR-PC20-1NO-1NC-24DC-SC - 2700577 

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 high- and low-demand applications, couples digital output signals to the periphery, 1 enabling current path, 1 confirmation current path, 1 digital signal output, safe state off applications, test pulse filter, TBUS connection, plug-in screw terminal block 

## Your advantages 

Up to SIL 3 according to IEC 61508 

Forcibly guided contacts according to EN 50205 

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

- Approved for Class I, Zone 2 applications 

Low housing width of just 12.5 mm 

Enabling current path protected via internal fuse as an option 

Long service life thanks to filtering of controller test pulses 

1 enabling current path, 1 digital signal output, 1 diagnostic current path 

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

## Key Commercial Data 

|Key Commercial Data||
|---|---|
|Packing unit|1 pc|
|GTIN||
|GTIN|4046356916417|
|Weight per Piece (excluding packing)|189.100 g|
|Custom tariff number|85364900|
|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<br>area|
|---|---|



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https://www.phoenixcontact.com/gb/products/2700577 

## Coupling relay - PSR-PC20-1NO-1NC-24DC-SC - 2700577 

## Technical data 

## Dimensions 

|Width|12.5 mm||
|---|---|---|
|Height|112.2 mm||
|Depth|114.5 mm||
|Ambient conditions|||
|Ambient temperature (operation)|-40 °C ... 70 °C (observe derating)||
|Ambient temperature (storage/transport)|-40 °C ... 85 °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. 50 mA||
|Power consumption at US|typ. 1.2 W||
|Inrush current|typ. 400 mA (Δt < 10 µs at Us)||
|Filter time|max. 2 ms (at A1-A2; test pulse width)||
||≥ 100 ms (at A1-A2; test pulse rate)||
|Diagnostic supply voltage UD|24 V DC -15 % / +10 % (31/A2, TBUS)||
|Input current at UD|6 mA (at 31-A2 for UD; depending on load + 100 mA at M1 and 32)|; depending on load + 100 mA at M1 and 32)|
|Inrush current at UD|typ. 2.5 A (Δt < 20 µs at UD)||
|Protective circuit|Serial protection against polarity reversal 33 V suppressor diode (A1/<br>A2)33 V suppressor diode (31/A2)||
|Relay outputs: enabling current path|||
|Output name<br>Enabling current path<br>Output description<br>2 N/O contacts in series, without delay, floating<br>Number of outputs<br>1 (safety-related N/O contacts: 13/14 (13F/14))<br>Contact type<br>1 enabling current path<br>Contact material<br>AgSnO2<br>Switching voltage<br>min. 12 V AC/DC<br>max. 250 V AC/DC (Observe the load curve)<br>Limiting continuous current<br>6 A (13/14 for high-demand)<br>4 A (13F/14 with high/low demand, 13/14 with low demand)<br>Inrush current<br>min. 3 mA<br>max. 6 A (N/O contact 13/14)<br>4 A (N/O contact 13F/14)<br>Sq. Total current<br>36 A<br>2(13/14, see to derating)<br>16 A<br>2(13F/14, see to derating)<br>Switching capacity<br>min. 60 mW<br>Switching frequency<br>max. 0.5 Hz~~=~~|||
|||12/30/2019   Page 2 / 8|



https://www.phoenixcontact.com/gb/products/2700577 

## Coupling relay - PSR-PC20-1NO-1NC-24DC-SC - 2700577 

## Technical data 

Relay outputs: enabling current path 

Mechanical service life 10x 106 cycles Switching capacity according to IEC 60947-5-1 4 A (24 V (DC13); N/O contact 13/14) 5 A (250 V (AC15); N/O contact 13/14) 4 A (250 V (AC15); N/O contact 13F/14) Output fuse 6 A gL/gG (N/O contact 13/14) 4 A gL/gG (for low-demand applications) Relay outputs: return current/signaling current path Output name Confirmation current path 2 N/C contacts in series, without delay, not floating (reference ground: Output description A2) Number of outputs 1 (safety-related N/C contacts: 31/32) Contact type 1 confirmation current path Contact material AgCuNi, + Au Switching voltage min. 20.4 V DC max. 26.4 V DC Limiting continuous current 100 mA Inrush current min. 1 mA max. 100 mA Switching capacity min. 20 mW Switching frequency max. 0.5 Hz Mechanical service life 10x 106 cycles Output fuse 150 mA Fast-blow Alarm outputs Designation M1 Output description PNP Number of outputs 1 (non-safety-related) Voltage approx. 22 V DC (UD - 2 V) Current max. 100 mA Maximum inrush current 500 mA (Δt = 1 ms at Us) Short-circuit protection no Output fuse 150 mA fast blow ~~=>~~ Times Typical pickup time at US < 100 ms (with Us when controlled via A1) Typical release time at US < 35 ms (when controlled via A1) Recovery time 500 ms General Electromechanical relay with forcibly guided contacts in accordance with Relay type IEC/EN 61810-3 (EN 50205) ~~[=]~~ Nominal operating mode 100% operating factor ~~——~~ 12/30/2019   Page 3 / 8 

https://www.phoenixcontact.com/gb/products/2700577 

## Coupling relay - PSR-PC20-1NO-1NC-24DC-SC - 2700577 

## Technical data 

## General 

||Net weight|189.1 g|
|---|---|---|
||Mounting position|vertical, horizontal, with front of module upward|
||Mounting type|DIN rail mounting|
||Assembly instructions|See derating curve|
||Degree of protection|IP20|
||Min. degree of protection of inst. location|IP54|
||Housing material|PBT|
||Housing color|yellow|
||Operating voltage display|1 x yellow LED|
||Status display|1 x green LED|
||Indication|1 x red LED|
|Connection data|||
|Connection method<br>Screw connection<br>pluggable<br>Yes<br>Conductor cross section solid min.<br>0.2 mm²<br>Conductor cross section solid max.<br>2.5 mm²<br>Conductor cross section flexible min.<br>0.2 mm²<br>Conductor cross section flexible max.<br>2.5 mm²<br>Conductor cross section AWG min.<br>24<br>Conductor cross section AWG max.<br>12<br>Stripping length<br>7 mm<br>Screw thread<br>M3<br>Torque<br>0.5 Nm ... 0.6 Nm<br>Safety-related characteristic data<br>Stop category<br>0<br>Designation<br>IEC 61508 - High demand<br>Safety Integrity Level (SIL)<br>3<br>Designation<br>IEC 61508 - Low demand<br>Safety Integrity Level (SIL)<br>3<br>Designation<br>EN 50156<br>Safety Integrity Level (SIL)<br>3<br>Standards and Regulations<br>Designation<br>Air clearances and creepage distances between the power circuits<br>Standards/regulations<br>DIN EN 50178, EN 60079-15<br>Rated insulation voltage<br>250 V AC<br>Rated surge voltage/insulation<br>Safe isolation, 6 kV reinforced insulation from control circuit, start circuit,<br>confirmation current path, signal output to the enabling current path; 4<br>kV/basic insulation between all current paths and housing<br>Degree of pollution<br>2<br>Overvoltage category<br>III<br>~~a=~~<br>~~SS =~~<br>~~——_~~|||
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https://www.phoenixcontact.com/gb/products/2700577 

## Coupling relay - PSR-PC20-1NO-1NC-24DC-SC - 2700577 

## Technical data 

## Standards and Regulations 

|Standards and Regulations||
|---|---|
|Shock|15g|
|Vibration (operation)|10 Hz ... 150 Hz, 2g|
|Conformance|CE-compliant|
|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)|



## 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 

## Block diagram 

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https://www.phoenixcontact.com/gb/products/2700577 

## Coupling relay - PSR-PC20-1NO-1NC-24DC-SC - 2700577 

Circuit 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 5.0|ETIM 5.0|EC001449|
|---|---|---|
|ETIM 6.0|ETIM 6.0|EC001449|
|ETIM 7.0|ETIM 7.0|EC001449|



## Approvals 

Approvals 

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https://www.phoenixcontact.com/gb/products/2700577 

## Coupling relay - PSR-PC20-1NO-1NC-24DC-SC - 2700577 

## Approvals 

Approvals 

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

Ex Approvals 

## Approval details 

GL https://approvalfinder.dnvgl.com/ 11253-14 HH  UL Listed http://database.ul.com/cgi-bin/XYV/template/LISEXT/1FRAME/index.htm FILE E 140324  ~~oe~~ cUL Listed http://database.ul.com/cgi-bin/XYV/template/LISEXT/1FRAME/index.htm FILE E 140324  Functional Safety 44-780-13755202  RU C- EAC DE.A*30.B.01082  ~~oe~~ cULus Listed  ~~oo~~ Accessories Accessories DIN rail connector DIN rail bus connectors - ME 6,2 TBUS-2 1,5/5-ST-3,81 GN - 2869728 

DIN rail connector for DIN rail mounting. Universal for TBUS housing. Gold-plated contacts, 5-pos. 

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https://www.phoenixcontact.com/gb/products/2700577 

## Coupling relay - PSR-PC20-1NO-1NC-24DC-SC - 2700577 

## Accessories 

Phoenix Contact 2019 © - all rights reserved http://www.phoenixcontact.com 

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## Links

- [View this product on Novapart](https://novapart.co/products/2700577/safety-relay-24-vdc-spst-no-nc-psrmini-series-din)
- [Request a quote for this part](https://novapart.co/quote/)
- [Supplier page](https://es.farnell.com/phoenix-contact/psr-pc20-1no-1nc-24dc-sc/coupling-relay-spst-no-spst-nc/dp/3252367)
---

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