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3RV2742-5HD10
Thermal Magnetic Circuit Breaker, System Protection, 3RV2, 3P, 100 kA, 400 V, 45 A
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- Manufacturer: SIEMENS
- Product type: Thermal Magnetic Circuit Breakers
- Product Range: SIRIUS 3RV2 Series
| Delivery and price | |
|---|---|
| Units per pack | 1 |
| Price | 508.08 € |
| Current stock | 10+ |
| Lead time | 30 days |
**3RV2742-5HD10** **Data sheet** circuit breaker size S3 for system protection with approval circuit breaker UL 489, CSA C22.2 no. 5-02 thermal release 45 A short-circuit release 585 A screw terminal |**product brand name**|SIRIUS| |---|---| |**product designation**|Circuit breaker| |**design of theproduct**|For systemprotection accordingto UL 489/CSA C22.2 No. 5| |**product type designation**|3RV2| |**General technical data**|| |**Product equipment of circuit breaker for motor protection**|Yes| |**complete unit withprotection device**|| |**size of the circuit-breaker**|S3| |product function disconnector functionality|Yes| |product extension auxiliaryswitch|Yes| |**power loss[W] for rated value of the current**|| |● at AC in hot operatingstate|18 W| |● at AC in hot operatingstateperpole|6 W| |**type of calculation ofpower loss current-dependent**|quadratic| |insulation voltage with degree ofpollution 3 at AC rated value|1 000 V| |**surge voltage resistance rated value**|8 kV| |**maximumpermissible voltage forprotective separation**|| |● in networks with ungrounded star point between main and|400 V| |auxiliarycircuit|| |● in networks with grounded star point between main and|400 V| |auxiliarycircuit|| |**protection class IP**|| |● on the front accordingto IEC 60529|IP20| |● on the front|IP20| |● of the terminal|IP00| |**shock resistance according to IEC 60068-2-27**|25g/ 11 ms(rectangular impulse and sinepulse)| |**mechanical service life(operating cycles)**|| |● of the main contacts typical|25 000| |● of auxiliarycontacts typical|25 000| |electrical endurance(operatingcycles)typical|25 000| |**reference code according to IEC 81346-2**|Q| |**continuous current rated value**|45 A| |**Substance Prohibitance(day/month/year)**|03/01/2017| |**SVHC substance name**|Lead CAS-No. 7439-92-1| |**Net Weight**|2.262 kg| |**Ambient conditions**|| |installation altitude at height above sea level maximum|2 000 m| Subject to change without notice © Copyright Siemens 3RV27425HD10 Page 1/5 5/29/2026 |**ambient temperature**|| |---|---| |● duringoperation|-20 ... +60 °C| |● duringstorage|-50 ... +80 °C| |● duringtransport|-50 ... +80 °C| |**temperature compensation**|-20 ... +60 °C| |relative humidityduringoperation|10 ... 95 %| |**Main circuit**|| |**number ofpoles for main current circuit**|3| |**type of voltage for main current circuit**|AC| |**operating voltage**|| |● rated value|600 V| |● rated value|20 ... 600 V| |**operating frequency rated value**|50 ... 60 Hz| |**operational current rated value**|45 A| |**Auxiliary circuit**|| |**type of voltage for auxiliary and control circuit**|AC/DC| |**number of NC contacts for auxiliary contacts**|0| |**number of NO contacts for auxiliary contacts**|0| |number of CO contacts for auxiliarycontacts|0| |**Protective and monitoring functions**|| |**product function**|| |●ground fault detection|No| |●phase failure detection|No| |**design of the overload release**|thermal| |**protection function thermal overloadprotection(ANSI 49)**|Yes| |**maximum short-circuit current breaking capacity (Icu)**|| |● at AC at 240 V rated value|100 kA| |● at AC at 400 V rated value|100 kA| |● at 480 AC Y/277 V accordingto UL 489 rated value|65 kA| |**operating short-circuit current breaking capacity (Ics) at AC**|| |● at 240 V rated value|100 kA| |● at 400 V rated value|50 kA| |response value current of instantaneous short-circuit trip unit|585 A| |**Short-circuit protection**|| |**product function short circuitprotection**|Yes| |**design of the short-circuit trip**|magnetic| |**Installation/ mounting/ dimensions**|| |**mounting position**|any| |**fastening method**|screw and snap-on mountingonto 35 mm DIN rail accordingto DIN EN 60715| |**Mounting method of circuit breaker for Transformer**<br>**protection, Generator protection and system protection**<br>**optional standard bar mounting**|Yes| |**height**|170 mm| |**width**|70 mm| |**depth**|176 mm| |**required spacing**|| |● forgroundedparts at 400 V|| |— downwards|90 mm| |— upwards|90 mm| |— at the side|10 mm| |● for liveparts at 400 V|| |— downwards|90 mm| |— upwards|90 mm| |— at the side|10 mm| |**Connections/ Terminals**|| |**product component removable terminal for auxiliary and**<br>**control circuit**|No| |**type of electrical connection**|| |● for main current circuit|screw-type terminals| Subject to change without notice © Copyright Siemens 3RV27425HD10 Page 2/5 5/29/2026 **==> picture [509 x 564] intentionally omitted <==** **----- Start of picture text -----**<br> |||||| |---|---|---|---|---| |arrangement of electrical connectors for main current|Top and bottom| |circuit| |type of connectable conductor cross-sections| |● for main contacts| |— solid|2x (2.5 ... 16 mm²)| |— solid or stranded|2x (2,5 ... 50 mm²), 1x (10 ... 70 mm²)| |— finely stranded with core end processing|2x (2.5 ... 35 mm²), 1x (2.5 ... 50 mm²)| |— finely stranded without core end processing|2x (10 ... 35 mm²), 1x (10 ... 50 mm²)| |● for AWG cables for main contacts|8| |● for AWG cables for main contacts for box terminal using|8| |the front clamping|point| |connectable conductor cross-section for main contacts| |● finely stranded with core end processing|2.5 ... 50 mm²| |● finely stranded without core end processing|10 ... 50 mm²| |AWG number as coded connectable conductor cross|8| |section for main contacts| |tightening torque| |● for main contacts with screw-type terminals|4.5 ... 6 N·m| |design of screwdriver shaft|Hexagonal socket| |size of the screwdriver tip|4 mm| |design of the thread of the connection screw| |● for main contacts|M8| |Safety related data| |——————|product function suitable for safety function|Yes| |suitability for use| |● safety-related switching on|No| |● safety-related switching OFF|Yes| |service life maximum|10 a| |test wear-related service life necessary|Yes| |proportion of dangerous failures| |● with low demand rate according to SN 31920|40 %| |● with high demand rate according to SN 31920|50 %| |B10 value with high demand rate according to SN 31920|5 000| |failure rate [FIT] with low demand rate according to SN|50 FIT| |31920| |ISO 13849| |device type accordin|EE|g to ISO 13849-1|€,|3| |overdimensioning according to ISO 13849-2 necessary|Yes| |IEC 61508| |es|safety device type according to IEC 61508-2|—————————————|Type A| |T1 value| |● for proof test interval or service life according to IEC|10 a| |61508| |Electrical Safety| |es|protection class IP on the front according to IEC 60529|—————————————|IP20| |touch protection on the front according to IEC 60529|finger-safe, for vertical contact from the front| **----- End of picture text -----**<br> ~~|~~ **Display** display version for switching status Handle **Approvals Certificates** ~~——~~ Environmental Product Declaration ~~————~~ ● global warming potential [CO2 eq] / during manufacturing 18.5 kg ● global warming potential [CO2 eq] / during sales 1.24 kg 18.5 kg 1.24 kg 265 kg - global warming potential [CO2 eq] / during operation ● global warming potential [CO2 eq] / after end of life ● global warming potential [CO2 eq] / total - **Environment** - -1.5 kg 283.24 kg **General Product Approval** **==> picture [156 x 39] intentionally omitted <==** **----- Start of picture text -----**<br> ||| |---|---| |Environmental Con-| |firmations| |e|e| **----- End of picture text -----**<br> Subject to change without notice © Copyright Siemens 3RV27425HD10 Page 3/5 5/29/2026 ## **General Product Approval** |**Test Certificates**|| |---|---| |Special Test Certific-<br>ate|Type Test Certific-<br>ates/Test Report| |**Maritime application**<br>**other**|| |---|---| |Miscellaneous<br>Confirmation|Miscellaneous| ||| |**Further information**<br>~~ee~~|| |**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=3RV2742-5HD10|| |**Service&Support (Manuals, Certificates, Characteristics, FAQs,...)**|| |https://support.industry.siemens.com/cs/ww/en/ps/3RV2742-5HD10|| |**Image database (product images, 2D dimension drawings, 3D models, device circuit diagrams, EPLAN macros, ...)**|**Image database (product images, 2D dimension drawings, 3D models, device circuit diagrams, EPLAN macros, ...)**| |https://www.automation.siemens.com/bilddb/cax_de.aspx?mlfb=3RV2742-5HD10&lang=en|| |**Cax online generator**|| |https://support.automation.siemens.com/WW/CAXorder/default.aspx?lang=en&mlfb=3RV2742-5HD10|| |**Characteristic curves**|| |https://curves.simaris.siemens.com/curves/<mmp_prod_noCOMP="HAUPT"></mmp_prod__no>|| Subject to change without notice © Copyright Siemens 3RV27425HD10 Page 4/5 5/29/2026 **==> picture [343 x 368] intentionally omitted <==** **----- Start of picture text -----**<br> -F<br>||<br>ae<br>I> I> I><br>last modified: 5/5/2026 G<br>1/L1 3/L2 5/L3<br>/T1 /T2 /T3<br>2 4 6<br>**----- End of picture text -----**<br> Subject to change without notice © Copyright Siemens 3RV27425HD10 Page 5/5 5/29/2026
Updated at April 20, 2026
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