2904951

Safety Relay, 24 VDC, PSRmini Series, DIN Rail, 6 A, Screw

⚠️ 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: Safety Relays
Coil Voltage:24VDC; Contact Configuration:-; Product Range:PSR-MS25 Series; Relay Mounting:DIN Rail; Contact Current:6A; Relay Terminals:Screw; Contact Voltage AC Nom:250V; Contact Vol
SVHC: Lead (04-Feb-2026)
IP Rating: IP20, IP54
Coil Voltage: 24VDC
Product Range: PSRmini Series
Relay Mounting: DIN Rail
Contact Current: 6A
Relay Terminals: Screw
Contact Material: Silver Tin Oxide
Approvals & Standards: CE, UL
Contact Configuration: -
Contact Voltage AC Nom: 250V
Contact Voltage DC Nom: 250V

Delivery and price
Units per pack	1
Price	150.45 €
Current stock	10+
Lead time	30 days

Datasheet

https://www.phoenixcontact.com/gb/products/2904951 

## Safety relays - PSR-MS25-1NO-1DO-24DC-SC - 2904951 

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) 

Safety relay for emergency stop and safety doors up to SILCL 1, Cat. 1, PL c, depending on the application up to SILCL 3, Cat. 4, PL e, 1-channel operation, manual, monitored start, 1 enabling current path, US = 24 V DC, fixed screw terminal block 

## Why buy this product 

- Up to Cat. 1/PL c according to ISO 13849-1, SILCL 1 according to IEC 62061 

- Depending on the application, up to Cat. 4/PL e according to ISO 13849-1, SILCL 3 according to IEC 62061 

- Low housing width of just 6.8 mm 

- Single-channel control 

- 1 enabling current path, 1 digital signal output 

- Manual and monitored activation 

## Key Commercial Data 

> Packing unit ~~ee~~ 1 STK GTIN 4046356904995 ~~PTE~~ GTIN 4046356904995 ~~ee~~ Weight per Piece (excluding packing) 69.000 g ~~[LO~~ Custom tariff number 85371099 ~~[ |~~ Country of origin Germany ~~Do~~ Note Made to Order (non-returnable) ~~DO |~~ 

## Technical data 

## Note 

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

## Dimensions 

|Width|6.8 mm|
|---|---|
|Height|93.1 mm|



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https://www.phoenixcontact.com/gb/products/2904951 

## Safety relays - PSR-MS25-1NO-1DO-24DC-SC - 2904951 

## Technical data 

## Dimensions 

||Depth|102.5 mm|
|---|---|---|
|Ambient conditions|||
||Ambient temperature (operation)|-40 °C ... 60 °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)|
||Shock|15g|
||Vibration (operation)|10 Hz ...150 Hz, 2g|
||Maximum altitude|≤ 2000 m (Above sea level)|
|Input data|||
||Rated control circuit supply voltage US|24 V DC -15 % / +10 %|
||Power consumption at US|typ. 1 W|
||Rated control supply current IS|typ. 42 mA|
||Inrush current|4.5 A (Δt = 120 µs at Us)|
||Current consumption|< 5 mA (with Us/Ixto S12)|
|||< 10 mA (with Us/Ixat the start circuit)|
||Voltage at input/start and feedback circuit|24 V DC -15 % / +10 %|
||Typical response time|< 175 ms|
||Typical release time|< 20 ms (when controlled via A1 or S12)|
||Recovery time|< 500 ms|
||Status display|2 x green LEDs|
||Maximum switching frequency|0.5 Hz|
||Max. permissible overall conductor resistance|150 Ω|
||Filter time|1 ms (at A1 in the event of voltage dips at Us)|
|||max. 1.5 ms (at S12; test pulse width)|
|||min. 7.5 ms (at S12; test pulse rate)|
|||Test pulse rate = 5 x Test pulse width|
|Output data|||
|12/28/2016   Page 2 / 6<br>Contact type<br>1 enabling current path<br>Contact material<br>AgSnO2<br>Minimum switching voltage<br>12 V AC/DC<br>Maximum switching voltage<br>250 V AC/DC (Observe the load curve)<br>Limiting continuous current<br>6 A (observe derating)<br>Inrush current, minimum<br>3 mA<br>Maximum inrush current<br>6 A<br>Sq. Total current<br>36 A<br>2(observe derating)<br>Switching capacity<br>min. 60 mW<br>Output fuse<br>6 A gL/gG (N/O contact)<br>4 A gL/gG (for low-demand applications)<br>~~__=~~|||



https://www.phoenixcontact.com/gb/products/2904951 

## Safety relays - PSR-MS25-1NO-1DO-24DC-SC - 2904951 

## Technical data 

## Alarm outputs 

|Alarm outputs||
|---|---|
|Number of outputs|1 (digital, PNP)|
|Voltage|22 V DC (Us- 2 V)|
|Current|max. 100 mA|
|Maximum inrush current|500 mA (Δt = 1 ms at Us)|
|Short-circuit protection|no|



General Electromechanical relay with forcibly guided contacts in accordance with Relay type IEC/EN 61810-3 (EN 50205) Mechanical service life 10 x 106 cycles Nominal operating mode 100% operating factor Net weight 69 g Mounting type DIN rail mounting Assembly instructions See derating curve Mounting position vertical or horizontal Degree of protection IP20 Min. degree of protection of inst. location IP54 Control single-channel Housing material PBT Housing color yellow ~~—-_~~ Connection data Connection method Screw connection pluggable no 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. 26 Conductor cross section AWG max. 12 Stripping length 12 mm Screw thread M3 ~~ge~~ Safety-related characteristic data Stop category 0 Designation IEC 61508 - High demand Safety Integrity Level (SIL) 1 (up to SIL 3 depending on the application) Designation IEC 61508 - Low demand Safety Integrity Level (SIL) 1 (up to SIL 3 depending on the application) Designation EN ISO 13849 Performance level (PL) c (up to PL e depending on the application) Category 1 (up to Cat. 4 depending on the application) ~~_—_-_~~ 

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https://www.phoenixcontact.com/gb/products/2904951 

## Safety relays - PSR-MS25-1NO-1DO-24DC-SC - 2904951 

## Technical data 

Safety-related characteristic data 

|Designation<br>Safety Integrity Level Claim Limit (SIL CL)<br>Standards and Regulations<br>~~es~~|EN 62061<br>1 (up to SILCL 3 depending on the application)<br>~~es~~|
|---|---|
|Shock|15g|
|Designation|Air clearances and creepage distances between the power circuits|
|Standards/regulations|DIN EN 50178|
|Rated insulation voltage|250 V AC|
||250 V AC|
|Rated surge voltage/insulation|Safe isolation, reinforced insulation 6 kV between input circuit and<br>enabling current path<br>Basic insulation 4 kV between all current paths and housing|
|Degree of pollution|2|
|Overvoltage category|III|
|Vibration (operation)|10 Hz ...150 Hz, 2g|
|Conformance|CE-compliant|



Environmental Product Compliance 

China RoHS Environmentally Friendly Use Period = 50 For details about hazardous substances go to tab “Downloads”, Category “Manufacturer's declaration” ~~a~~ 

Drawings 

**==> picture [156 x 97] intentionally omitted <==**

**----- Start of picture text -----**<br>
Block diagram<br>A1 S11 S12 S34 13<br>PSR-MS25 IN K1<br>PWR K1/K2<br>K2<br>24V DC<br>A2 M1 14<br>**----- End of picture text -----**<br>


**==> picture [156 x 139] intentionally omitted <==**

**----- Start of picture text -----**<br>
Block diagram<br>PSR-MS25<br>A1 S11 S34 13<br>1 7<br>K1<br>8 K2<br>K1 K2<br>2 3 4 6 5<br>2<br>A2 S12 M1 14<br>**----- End of picture text -----**<br>


Key: 

- 1 = Voltage limitation 

- 2 = Channel 1 

- 3 = Control circuit channel 1 

- 4 = Control circuit signal output 

- 5 = Start channel 1 and 2 

- 6 = Control circuit channel 2 

- 7 = Start circuit 

- 8 = Diagnostics 

- K1, K2 = Force-guided elementary relays 

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https://www.phoenixcontact.com/gb/products/2904951 

## Safety relays - PSR-MS25-1NO-1DO-24DC-SC - 2904951 

Application drawing 

**==> picture [145 x 150] intentionally omitted <==**

**----- Start of picture text -----**<br>
24V DC L<br>S2<br>K1 S1<br>K2<br>ll Ec ll<br>A1 S34(  ) S11(+) S12(  ) 13 K1<br>PSR-MS25<br>A2 M1(  ) 14 K2<br>M<br>K1<br>K2<br>0V N<br>**----- End of picture text -----**<br>


## Classifications 

## eCl@ss 

|eCl@ss 5.1|eCl@ss 5.1|27371901|
|---|---|---|
|eCl@ss 6.0|eCl@ss 6.0|27371819|
|eCl@ss 8.0|eCl@ss 8.0|27371819|
|eCl@ss 9.0|eCl@ss 9.0|27371819|



## ETIM 

ETIM 5.0 EC001449 ETIM 6.0 EC001449 UNSPSC 

UNSPSC 13.2 39121501 ~~a~~ Approvals 

## Approvals 

## Approvals 

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

Ex Approvals 

## Approval details 

UL Listed 

 

http://database.ul.com/cgi-bin/XYV/template/LISEXT/1FRAME/index.htm FILE E 140324 

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## Safety relays - PSR-MS25-1NO-1DO-24DC-SC - 2904951 

Approvals 

**==> picture [525 x 175] intentionally omitted <==**

**----- Start of picture text -----**<br>
cUL Listed   http://database.ul.com/cgi-bin/XYV/template/LISEXT/1FRAME/index.htm  FILE E 140324<br><br>oo<br>Functional Safety  44-205-13755202<br>EAC   7500651.22.01.00244<br><br>oo<br>cULus Listed<br><br>**----- End of picture text -----**<br>


Phoenix Contact 2016 © - all rights reserved http://www.phoenixcontact.com 

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Updated at April 29, 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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