2904664
Safety Relay, 24 VDC, SPST-NO, PSRmini Series, DIN Rail, 5 A, Screw
- Manufacturer: PHOENIX CONTACT
- Product type: Safety Relays
- 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
| Delivery and price | |
|---|---|
| Units per pack | 1 |
| Price | 262.3 € |
| Current stock | 10+ |
| Lead time | 30 days |
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
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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