2903231
Solid State Relay, 3 A, 280 VAC, Socket, Plug In
- Manufacturer: PHOENIX CONTACT
- Product type:
- SVHC: Hexahydromethylphthalic anhydride [1], Hexahydro-4-methylphthalic anhydride [2], Hexahydro-1-methylphthalic anhydride[3] (04-Feb-2026)
- Load Current: 3A
- Product Range: ST-OV3 Series
- Relay Mounting: Socket
- Switching Mode: -
- Relay Terminals: Plug In
- Control Voltage Max: 28.8VDC
- Control Voltage Min: 19.2VDC
- Contact Configuration: -
- Operating Voltage Max: 280VAC
- Operating Voltage Min: 24VAC
| Delivery and price | |
|---|---|
| Units per pack | 10 |
| Price | 66.74 € |
| Current stock | 10+ |
| Lead time | 30 days |
https://www.phoenixcontact.com/us/products/2903231 ## Solid-state relays - ST-OV3- 24DC/240AC/3 - 2903231 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 power solid-state relay, with LED and protective circuit in input and output circuits, input: 24 V DC, output: 24 - 280 V AC/max. 3 A, can be plugged into basic terminal blocks The illustration shows version ST-OV 3- 5 DC/240 AC/3 Key commercial data Packing unit 1 pc ~~|~~ GTIN ~~I |~~ Weight per Piece (excluding packing) 56.59 GRM ~~QO~~ Custom tariff number 85364190 Country of origin Germany ~~Pe~~ ## Technical data ## Dimensions |Width|20.8 mm| |---|---| |Height|33 mm| |Depth|66.5 mm| |Ambient conditions|| |Ambient temperature (operation)|-20 °C ... 60 °C| |Ambient temperature (storage/transport)|-20 °C ... 70 °C| |Input data|| |Nominal input voltage UN|24 V DC ±20 %| |Switching threshold "0" signal in reference to UN|≤ 0.4| |Switching threshold "1" signal in reference to UN|≥ 0.8| |Typical input current at UN|7 mA| 10/10/2014 Page 1 / 5 https://www.phoenixcontact.com/us/products/2903231 ## Solid-state relays - ST-OV3- 24DC/240AC/3 - 2903231 |Technical data| |---| |Input data| |Typical response time<br>switch-on time: Max. one half cycle - zero-voltage crossing<br>Typical turn-off time<br>switch-off time Max. one half cycle - zero-current crossing<br>Operating voltage display<br>Yellow LED<br>Type of protection<br>Protection against polarity reversal<br>Protective circuit/component<br>Polarity protection diode<br>Transmission frequency<br>25 Hz<br>~~——~~| |Output data| |Output voltage range<br>24 V AC ... 280 V AC<br>Limiting continuous current<br>3 A (see derating curve)<br>Min. load current<br>50 mA<br>Leakage current<br>5 mA (in off state - components with low minimum load and leakage<br>currents on request.)<br>Surge current<br>35 A (t = 10 ms)<br>Max. load value<br>6 A<br>2s (I<br>2x t at t = 8.3 ms)<br>Peak offstate voltage<br>600 V<br>Voltage drop at max. limiting continuous current<br>1.5 V<br>Output circuit<br>2-wire, floating<br>Protective circuit/component<br>RC element<br>General<br>Test voltage input/output<br>2.5 kV AC<br>Mounting position<br>any<br>Standards/regulations<br>DIN VDE 0110<br>~~=~~| |Classifications| |eCl@ss<br>eCl@ss 4.0<br>27371102<br>eCl@ss 4.1<br>27371102<br>eCl@ss 5.0<br>27371001<br>eCl@ss 5.1<br>27371001<br>eCl@ss 6.0<br>27371001<br>eCl@ss 7.0<br>27371001<br>eCl@ss 8.0<br>27371001<br>ETIM<br>ETIM 2.0<br>EC001504<br>ETIM 3.0<br>EC001504<br>~~—e~~| |10/10/2014 Page 2 / 5| https://www.phoenixcontact.com/us/products/2903231 ## Solid-state relays - ST-OV3- 24DC/240AC/3 - 2903231 ## Classifications |Classifications|Classifications| |---|---| |ETIM<br>ETIM 4.0<br>EC001504<br>ETIM 5.0<br>EC001504<br>~~ee~~|| |UNSPSC|| |UNSPSC 6.01|30211916| |UNSPSC 7.0901|39121542| |UNSPSC 11|39121542| |UNSPSC 12.01|39121542| |UNSPSC 13.2|39121542| ## Approvals Approvals Approvals GOST / GOST Ex Approvals Approvals submitted ## Approval details GOST GOST ## Drawings 10/10/2014 Page 3 / 5 https://www.phoenixcontact.com/us/products/2903231 ## Solid-state relays - ST-OV3- 24DC/240AC/3 - 2903231 **==> picture [363 x 112] intentionally omitted <==** **----- Start of picture text -----**<br> Diagram Circuit diagram<br>3 1 is 1 ]<br>2<br>5oO 2 2<br>io<br>3 1 1<br>0<br>20 30 40 50 60<br>Ambient temperature [°C]<br>1 In rows with zero spacing<br>2 stand-alone device<br>**----- End of picture text -----**<br> 10/10/2014 Page 4 / 5 https://www.phoenixcontact.com/us/products/2903231 ## Solid-state relays - ST-OV3- 24DC/240AC/3 - 2903231 **==> picture [62 x 9] intentionally omitted <==** **----- Start of picture text -----**<br> Circuit diagram<br>**----- End of picture text -----**<br> Phoenix Contact 2014 © - all rights reserved http://www.phoenixcontact.com 10/10/2014 Page 5 / 5
Updated at June 5, 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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