3UG4651-2AW30

**3UG4651-2AW30** 

**Data sheet** 

!!! product phase-out !!! the preferred successor is 3UG5651-2CW30 digital monitoring relay speed monitoring from 0.1 to 2200 r/min overshoot and undershoot 24 to 240 V AC/DC 50 to 60 Hz DC and AC ON-delay 1 to 900 s tripping delay 0.1 to 99.9 s hysteresis 0.1 to 99 r/min 1 changeover contact with or without fault buffer spring-loaded connection system 

|**product brand name**|SIRIUS|
|---|---|
|**product designation**|Speed monitoringrelaywith digital setting|
|**product type designation**|3UG4|
|**General technical data**<br>~~|~~||
|**product function**|RPM monitoringrelay|
|**design of the display**|LCD|
|||
|● apparentpower consumption at AC||
|— at 24 V maximum|4 VA|
|— at 240 V maximum|9 VA|
|**insulation voltage**||
|**● for overvoltage category III according to IEC 60664**||
|— with degree ofpollution 3 rated value|300 V|
|**degree ofpollution**|3|
|type of voltage of the control supplyvoltage|AC/DC|
|**surge voltage resistance rated value**|4 kV|
|**shock resistance according to IEC 60068-2-27**|sinusoidal half-wave 15g/ 11 ms|
|**mechanical service life(operating cycles) typical**|10 000 000|
|electrical endurance(operatingcycles)at AC-15 at 230 V typical|100 000|
|**reference code according to IEC 81346-2**|K|
|**relative repeat accuracy**|1 %|
|**Substance Prohibitance(day/month/year)**|05/01/2012|
|**SVHC substance name**|Lead CAS-No. 7439-92-1|
||Lead monoxide (lead oxide) CAS-No. 1317-36-8|
||2-methyl-1-(4-methylthiophenyl)-2-morpholinopropan-1-one CAS-No. 71868-|
||10-5|
||Melamine CAS-No. 108-78-1|
||6,6'-di-tert-butyl-2,2'-methylenedi-p-cresol CAS-No. 119-47-1|



|||Lead monoxide (lead oxide) CAS-No. 1317-36-8<br>2-methyl-1-(4-methylthiophenyl)-2-morpholinopropan-1-one CAS-No. 71868-<br>10-5<br>Melamine CAS-No. 108-78-1<br>6,6'-di-tert-butyl-2,2'-methylenedi-p-cresol CAS-No. 119-47-1|
|---|---|---|
||**Net Weight**|0.154g|
|**Product Function**<br>~~|~~|||
||**product function**||
||● standstill monitoring|No|
||● rotation speed monitoring|Yes|
||● error memory|Yes|
||● adjustable open/closed-circuit currentprinciple|Yes|
||● external reset|Yes|
||● auto-RESET|Yes|
||● manual RESET|Yes|
||suitabilityfor use safety-related circuits|No|
|**Control circuit/ Control**<br>~~OO~~<br>~~—CtrsSCSC“‘CCNC;CCéC~~|||



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|**control supply voltage at AC**||
|---|---|
|● at 50 Hz rated value|24 ... 240 V|
|● at 60 Hz rated value|24 ... 240 V|
|**control supply voltage at DC rated value**|24 ... 240 V|
|**operating range factor control supply voltage rated value at**<br>**DC**||
|● initial value|0.8|
|● full-scale value|1.1|
|**operating range factor control supply voltage rated value at**<br>**AC at 50 Hz**||
|● initial value|1.1|
|● full-scale value|0.8|
|**operating range factor control supply voltage rated value at**<br>**AC at 60 Hz**||
|● initial value|1.1|
|● full-scale value|0.8|
|**Measuring circuit**||
|**measurable line frequency**|50 ... 60 Hz|
|**adjustable response delay time**||
|● when starting|1 ... 900 s|
|● with lower or upper limit violation|0.1 ... 99.9 s|
|**buffering time in the event ofpower failure minimum**|10 ms|
|**accuracy of digital display**|+/- 1 Digit|
|**Precision**||
|**relative metering precision**|10 %|
|**Communication/ Protocol**||
|protocol is supported IO-Link protocol|No|
|**Auxiliary circuit**||
|number of NC contacts delayed switching|0|
|number of NO contacts delayed switching|0|
|number of CO contacts delayed switching|1|
|**operating frequency with 3RT2 contactor maximum**|5 000 1/h|
|**Inputs/ Outputs**||
|design of input feedback input|No|
|**number of outputs as contact-affected switching element**||
|● for signalingfunction||
|— instantaneous contact|0|
|— delayed switching|1|
|● safety-related||
|— delayed switching|0|
|— instantaneous contact|0|
|**number of outputs as contact-less semiconductor**<br>**switching element**||
|● for signalingfunction||
|— delayed switching|0|
|— instantaneous contact|0|
|● safety-related||
|— delayed switching|0|
|— instantaneous contact|0|
|**ampacity of the output relay at AC-15**||
|● at 250 V at 50/60 Hz|3 A|
|**ampacity of the output relay at DC-13**||
|● at 24 V|1 A|
|● at 125 V|0.2 A|
|● at 250 V|0.1 A|
|**operational current at 17 V minimum**|5 mA|
|**continuous current of the DIAZED fuse link of the output**<br>**relay**|4 A|
|**Electromagnetic compatibility**||
|**conducted interference**||



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||● due to burst accordingto IEC 61000-4-4|2 kV||
|---|---|---|---|
||● due to conductor-earth surge accordingto IEC 61000-4-5|2 kV||
||● due to conductor-conductor surge according to IEC<br>61000-4-5|1 kV||
||**field-based interference according to IEC 61000-4-3**|10 V/m||
||**electrostatic discharge according to IEC 61000-4-2**|6 kV contact discharge / 8 kV air discharge||
||**Galvanic isolation**|||
||**galvanic isolation**|||
||● between input and output|Yes||
||● between the outputs|No||
||IEC 61508|||
||SafetyIntegrityLevel(SIL)accordingto IEC 61508|without||
||Electrical Safety|||
||**protection class IP on the front according to IEC 60529**|IP20||
||**Connections/ Terminals**|||
||**product component removable terminal for auxiliary and**<br>**control circuit**|Yes||
||**type of electrical connection**|spring-loaded terminals||
||**type of connectable conductor cross-sections**|||
||● solid|2x(0.25 ... 1.5 mm²)||
||● finelystranded with core endprocessing|2 x(0.25 ... 1.5 mm²)||
||● finelystranded without core endprocessing|2x(0.25 ... 1.5 mm²)||
||● for AWG cables solid|2x(24 ... 16)||
||● for AWG cables stranded|2x(24 ... 16)||
||**connectable conductor cross-section**|||
||● solid|0.25 ... 1.5 mm²||
||● finelystranded with core endprocessing|0.25 ... 1.5 mm²||
||● finelystranded without core endprocessing|0.25 ... 1.5 mm²||
||**AWG number as coded connectable conductor cross**<br>**section**|||
||● solid|24 ... 16||
||● stranded|24 ... 16||
||**Installation/ mounting/ dimensions**|||
||**mounting position**|any||
||**fastening method**|screw and snap-on mounting||
||**height**|86 mm||
||**width**|22.5 mm||
||**depth**|103 mm||
||**required spacing**|||
||● with side-by-side mounting|||
||— forwards|0 mm||
||— backwards|0 mm||
||— upwards|0 mm||
||— downwards|0 mm||
||— at the side|0 mm||
||● forgroundedparts|||
||— forwards|0 mm||
||— backwards|0 mm||
||— upwards|0 mm||
||— at the side|0 mm||
||— downwards|0 mm||
||● for liveparts|||
||— forwards|0 mm||
||— backwards|0 mm||
||— upwards|0 mm||
||— downwards|0 mm||
||— at the side|0 mm||
||**Ambient conditions**|||
||installation altitude at height above sea level maximum|2 000 m||
||**ambient temperature**|||



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● during operation -25 ... +60 °C ● during storage -40 ... +80 °C ● during transport -40 ... +80 °C **Approvals Certificates** ~~ee~~ Environmental Product Declaration ● global warming potential [CO2 eq] / during manufacturing 4.44 kg ● global warming potential [CO2 eq] / during sales 0.0341 kg ● global warming potential [CO2 eq] / during operation 13.7 kg ● global warming potential [CO2 eq] / after end of life -1.06 kg ● global warming potential [CO2 eq] / total 17.1 kg **Environment General Product Approval** Environmental Confirmations **General Product ApEMV Test Certificates Maritime application proval** - - Type Test Certific Special Test Certific ates/Test Report ate **Maritime application other Railway** Confirmation Confirmation Special Test Certificate me ce ~~s) i~~ **Further information** ~~(iss~~ **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=3UG4651-2AW30 **Cax online generator** https://support.automation.siemens.com/WW/CAXorder/default.aspx?lang=en&mlfb=3UG4651-2AW30 **Service&Support (Manuals, Certificates, Characteristics, FAQs,...)** https://support.industry.siemens.com/cs/ww/en/ps/3UG4651-2AW30 **Image database (product images, 2D dimension drawings, 3D models, device circuit diagrams, EPLAN macros, ...)** https://www.automation.siemens.com/bilddb/cax_de.aspx?mlfb=3UG4651-2AW30&lang=en 

**last modified:** 4/4/2026 

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