# Solid State Relay, 3PST-NO, 55 A, 600 VAC, Panel, Screw, Zero Crossing

![Product image](https://novapart.co/image/farnell:3455121/)

**URL**: https://novapart.co/products/3RF2255-1AC35/solid-state-relay-3pst-no-55-a-600-vac-panel-screw
**SKU**: 3RF2255-1AC35
**Manufacturer**: SIEMENS
**Price**: €227.0700
**Stock**: 10+

## Specifications

| Parameter | Value |
|---|---|
| Product Range | SIRIUS 3RF22 Series |

## Datasheet

📄 [Download PDF](https://novapart.co/datasheet/farnell:3455121/)

**3RF2255-1AC35** 

**Data sheet** 

***phase-out type*** semiconductor relay, 3-phase 3RF2 55 A / 40 °C 48-600 V / 110 V AC 3-phase controlled screw terminal blocking voltage 1200 V for mounting on available cooling surfaces 

|Att<br>a) °<br>|~<br>~2.¢|***phase-out type*** semiconductor relay, 3-phase 3RF2 55 A / 40 °C 48-600 V /<br>110 V AC 3-phase controlled screw terminal blocking voltage 1200 V for mounting<br>on available cooling surfaces|
|---|---|
|**product brand name**|SIRIUS|
|**product designation**|solid-state relay|
|**design of theproduct**|3-pole controlled|
|**product type designation**|3RF22|
|**General technical data**<br>~~ee~~||
|**product function**<br>~~ee~~|zero-point switching<br>~~ee~~|
|**power loss[W] for rated value of the current**||
|● at AC in hot operatingstate|226 W|
|● at AC in hot operatingstateperpole|226 W|
|● without load current share typical|1.8 W|
|**insulation voltage rated value**|600 V|
|surge voltage resistance of main circuit rated value|6 kV|
|**protection class IP**|IP20|
|protection class IP on the front accordingto IEC 60529|IP20|
|**shock resistance according to IEC 60068-2-27**|15g/ 11 ms|
|**vibration resistance according to IEC 60068-2-6**|2g|
|**reference code according to IEC 81346-2**|Q|
|**Substance Prohibitance(day/month/year)**|07/01/2006|
|**SVHC substance name**|Lead CAS-No. 7439-92-1<br>Lead monoxide(lead oxide)CAS-No. 1317-36-8|
|**Net Weight**|0.14 kg|
|**Main circuit**<br>~~a~~||
|**number ofpoles for main current circuit**<br>~~a~~|3<br>~~a~~|
|**number of NO contacts for main contacts**|3|
|**number of NC contacts for main contacts**|0|
|**type of voltage of the operating voltage**|AC|
|**operating voltage**||
|● at AC||
|— at 50 Hz rated value|48 ... 600 V|
|— at 60 Hz rated value|48 ... 600 V|
|**operating frequency rated value**|50 ... 60 Hz|
|**relative symmetrical tolerance of the operating frequency**|10 %|
|**operating range relative to the operating voltage at AC**||
|● at 50 Hz|40 ... 660 V|
|● at 60 Hz|40 ... 660 V|
|**operational current rated value maximum**|55 A|
|**operational current**||
|● at AC-1 at 400 V rated value|55 A|
|● at AC-51 rated value|50 A|



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|● accordingto UL 508 rated value|50 A|
|---|---|
|**ampacity maximum**|55 A|
|**operational current minimum**|500 mA|
|**rate of voltage rise at the thyristor for main contacts**<br>**maximumpermissible**|100 V/µs|
|**blocking voltage at the thyristor for main contacts**<br>**maximumpermissible**|1 200 V|
|**reverse current of the thyristor**|10 mA|
|**derating temperature**|40 °C|
|**surge current resistance rated value**|600 A|
|**I2t value maximum**|1 800 A²·s|
|**Control circuit/ Control**||
|**type of voltage of the control supply voltage**|AC|
|**control supply voltage 1 at AC**||
|● at 50 Hz|88 ... 121 V|
|● at 60 Hz|88 ... 121 V|
|**control supply voltage at AC**||
|● at 50 Hz full-scale value for signal<0> recognition|40 V|
|● at 60 Hz full-scale value for signal<0> recognition|40 V|
|● initial value for signal <1> detection|90 V|
|**control supply voltage frequency**||
|**● 1 rated value**|50 Hz|
|**● 2 rated value**|60 Hz|
|**control current at minimum control supply voltage**||
|● at AC|2 mA|
|control current at AC rated value|15 mA|
|**ON-delay time**|40 ms|
|**OFF-delay time**|40 ms; additionallymax. one half-wave|
|**Installation/ mounting/ dimensions**||
|fasteningmethod side-by-side mounting|Yes|
|**fastening method**|screw fixing|
|**design of the thread of the screw for securing the**<br>**equipment**|M4|
|**tightening torque of fixing screw maximum**|1.5 N·m|
|**tightening torque[lbf·in] of fixing screw maximum**|13 lbf·in|
|**height**|95 mm|
|**width**|45 mm|
|**depth**|47 mm|
|**Connections/ Terminals**||
|**product component removable terminal for auxiliary and**<br>**control circuit**|Yes|
|**type of electrical connection**||
|● for main current circuit|screw-type terminals|
|● for auxiliaryand control circuit|screw-type terminals|
|**type of connectable conductor cross-sections**||
|● for main contacts||
|— solid|2x(1.5 ... 2.5 mm²), 2x(2.5 ... 6 mm²)|
|— finelystranded with core endprocessing|2x(1 ... 2.5 mm²), 2x(2.5 ... 6 mm²), 1x 10 mm²|
|● for AWG cables for main contacts|2x(14 ... 10)|
|**connectable conductor cross-section for main contacts**||
|● solid or stranded|1.5 ... 6 mm²|
|● finelystranded with core endprocessing|1 ... 10 mm²|
|**type of connectable conductor cross-sections**||
|● for auxiliaryand control contacts||
|— solid|1x(0.5 ... 2.5 mm²), 2x(0.5 ... 1 mm²)|
|— finelystranded with core endprocessing|1x(0.5 ... 2.5 mm²), 2x(0.5 ... 1 mm²)|
|— finelystranded without core endprocessing|1x(0.5 ... 2.5 mm²), 2x(0.5 ... 1 mm²)|
|● for AWG cables for auxiliaryand control contacts|1x(20 ... 12)|
|**AWG number as coded connectable conductor cross**<br>**section for main contacts**|10 ... 14|



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|**tightening torque**|**tightening torque**|||
|---|---|---|---|
|● for main contacts with screw-type terminals||2 ... 2.5 N·m||
|● for auxiliary and control contacts with screw-type<br>terminals||0.5 ... 0.6 N·m||
|**tightening torque[lbf·in]**||||
|● for main contacts with screw-type terminals||18 ... 22 lbf·in||
|● for auxiliary and control contacts with screw-type<br>terminals||4.5 ... 5.3 lbf·in||
|**design of the thread of the connection screw**||||
|● for main contacts||M4||
|● of the auxiliaryand control contacts||M3||
|**stripped length of the cable**||||
|● for main contacts||10 mm||
|● for auxiliaryand control contacts||7 mm||
|**UL/CSA ratings**<br>~~a~~||||
|**operational current according to UL 508 rated value**<br>~~a~~<br>~~a~~||50 A<br>~~a~~<br>~~a~~||
|Electrical Safety<br>~~a~~||||
|**touch protection on the front according to IEC 60529**<br>~~a~~||finger-safe, for vertical contact from the front<br>~~a~~||
|**Ambient conditions**<br>~~a~~||||
|installation altitude at height above sea level maximum<br>~~a~~||1 000 m<br>~~a~~||
|**ambient temperature**||||
|● duringoperation||-25 ... +60 °C||
|● duringstorage||-55 ... +80 °C||
|**Electromagnetic compatibility**<br>~~a~~||||
|**conducted interference**<br>~~a~~||~~a~~||
|● due to burst accordingto IEC 61000-4-4||2 kV / 5 kHz, behavior criterion 2||
|● due to conductor-earth surge accordingto IEC 61000-4-5||2 kV, behavior criterion 2||
|● due to conductor-conductor surge according to IEC<br>61000-4-5||1 kV, behavior criterion 2||
|● due to high-frequency radiation according to IEC 61000-<br>4-6||140 dBuV in the frequency range 0.15 ... 80 MHz, behavior criterion 1||
|**electrostatic discharge according to IEC 61000-4-2**||4 kV contact discharging/ 8 kV air discharging, behavior criterion 2||
|**conducted HF interference emissions according to**<br>**CISPR11**<br>~~re~~||Class A for industrial environment<br>~~re~~||
|**field-bound HF interference emission according to CISPR11**<br>~~re~~||Class A for industrial environment<br>~~re~~||
|**Short-circuit protection, design of the fuse link**||||
|manufacturer's article number||||
|● of full range R fuse link for semiconductor protection at<br>NH design usable||3NE1803-0; These fuses have a smaller rated current than the semiconductor<br>relays||
|● of back-up R fuse link for semiconductor protection at NH<br>design usable||3NE8018-1||
|● of back-up R fuse link for semiconductor protection at<br>cylindrical design 14 x 51 mm usable||3NC1450; These fuses have a smaller rated current than the semiconductor<br>relays||
|● of back-up R fuse link for semiconductor protection at<br>cylindrical design 22 x 58 mm usable||3NC2250; These fuses have a smaller rated current than the semiconductor<br>relays||
|manufacturer's article number of the gG fuse at NH design<br>usable||||
|● up to 460 V<br>~~ee~~||3NA3807-6; These fuses have a smaller rated current than the semiconductor<br>relays<br>~~ee~~||
|● up to 600 V<br>~~ee~~||3NA3805-6; These fuses have a smaller rated current than the semiconductor<br>relays<br>~~ee~~||
|**Approvals Certificates**<br>~~ee~~||||
|**Environment**<br>~~ee~~|**General Product Approval**<br>~~ee~~||**EMV**|



- manufacturer's article number of the gG fuse at NH design usable 

● up to 460 V 3NA3807-6; These fuses have a smaller rated current than the semiconductor relays ● up to 600 V 3NA3805-6; These fuses have a smaller rated current than the semiconductor relays 

● up to 600 V **Approvals Certificates** ~~ee~~ **Environment** Environmental Confirmations ~~—_~~ EPD EH [ **Test Certificates other** 

**General Product Approval** 

**EMV** 

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Type Test CertificConfirmation Miscellaneous Confirmation ~~ee~~ ates/Test Report ~~a ———_. ——~~ 

~~i~~ **Further information Information on the packaging** https://support.industry.siemens.com/cs/ww/en/view/109813875 **Information for data generation and storage** https://support.industry.siemens.com/cs/ww/en/view/109995012 

**Information- and Downloadcenter (Catalogs, Brochures,…)** https://www.siemens.com/ic10 

**Industry Mall (Online ordering system)** https://mall.industry.siemens.com/mall/en/en/Catalog/product?mlfb=3RF2255-1AC35 **Cax online generator** https://support.automation.siemens.com/WW/CAXorder/default.aspx?lang=en&mlfb=3RF2255-1AC35 **Service&Support (Manuals, Certificates, Characteristics, FAQs,...)** https://support.industry.siemens.com/cs/ww/en/ps/3RF2255-1AC35 

**Image database (product images, 2D dimension drawings, 3D models, device circuit diagrams, EPLAN macros, ...)** https://www.automation.siemens.com/bilddb/cax_de.aspx?mlfb=3RF2255-1AC35&lang=en 

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- [Supplier page](https://es.farnell.com/siemens/3rf2255-1ac35/solid-state-relays/dp/3455121)
---

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