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3RF2070-1AA26
Solid State Relay, SPST-NO, 70 A, 600 VAC, Panel, Screw, Zero Crossing
⚠️ Reference pricing provided. In case of supply shortages, we will connect you with our trusted procurement partners to ensure your project's continuity.
- Manufacturer: SIEMENS
- Product type:
- Product Range: SIRIUS 3RF20 Series
| Delivery and price | |
|---|---|
| Units per pack | 1 |
| Price | 106.3 € |
| Current stock | 10+ |
| Lead time | 30 days |
**3RF2070-1AA26** ## **Data sheet** ||***phase-out type*** semiconductor relay, 1-phase 3RF2 width 45 mm, 70 A 48-| |---|---| ||600 V / 110-230 V AC screw terminal for mounting on available cooling surfaces| |**product brand name**|SIRIUS| |**product designation**|solid-state relay| |**design of theproduct**|1-pole| |**product type designation**|3RF20| |**General technical data**<br>~~|~~|| |**product function**|zero-point switching| |**power loss[W] for rated value of the current**|| |● at AC in hot operatingstate|94 W| |● at AC in hot operatingstateperpole|94 W| |● without load current share typical|3.5 W| |**insulation voltage rated value**|600 V| |**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)**|05/28/2009| |**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| |**SVHC substance name**|Lead CAS-No. 7439-92-1<br>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| |---|---| |**Net Weight**|0.087 kg| |**Main circuit**<br>~~|~~|| |**number ofpoles for main current circuit**|1| |**number of NO contacts for main contacts**|1| |**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**|70 A| |**operational current**|| |● at AC-1 at 400 V rated value|70 A| |● at AC-51 rated value|50 A| |● accordingto UL 508 rated value|50 A| |**ampacity maximum**|70 A| |**operational current minimum**|500 mA| |**rate of voltage rise at the thyristor for main contacts**|1 000 V/µs| |**maximumpermissible**|| |**blocking voltage at the thyristor for main contacts**|1 600 V| |**maximumpermissible**|| |**reverse current of the thyristor**|10 mA| |**derating temperature**|40 °C| |**surge current resistance rated value**|1 150 A| Subject to change without notice © Copyright Siemens 3RF20701AA26 Page 1/4 5/30/2026 |**I2t value maximum**|6 600 A²·s| |---|---| |**Control circuit/ Control**|| |**type of voltage of the control supply voltage**|AC| |**control supply voltage 1 at AC**|| |● at 50 Hz|110 ... 230 V| |● at 60 Hz|110 ... 230 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| |**symmetrical line frequency tolerance**|5 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; additionallymax. one half-wave| |**OFF-delay time**|40 ms| |**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**|58 mm| |**width**|45 mm| |**depth**|48 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**|14 ... 10| |**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|7 ... 10.3 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**|| Subject to change without notice © Copyright Siemens 3RF20701AA26 Page 2/4 5/30/2026 |● for main contacts|● 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| |**field-based interference according to IEC 61000-4-3**||80 MHz ... 1 GHz 10 V/m, 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 B for the domestic, business and commercial environments<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||3NE1020-2| |● of back-up R fuse link for semiconductor protection at NH<br>design usable||3NE8020-1| |● of back-up R fuse link for semiconductor protection at<br>cylindrical design 22 x 58 mm usable||3NC2280| |manufacturer's article number of thegG fuse||| |● at NH design usable||3NA6812-6; These fuses have a smaller rated current than the semiconductor<br>relays| |● at NH design usable note||These fuses have a smaller rated current than the semiconductor relays| |**Approvals Certificates**<br>~~ee~~||| |**Environment**<br>~~ee~~|**General Product Approval**<br>~~ee~~|| ~~—(isisisisd~~ **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)** Subject to change without notice © Copyright Siemens 3RF20701AA26 Page 3/4 5/30/2026 https://mall.industry.siemens.com/mall/en/en/Catalog/product?mlfb=3RF2070-1AA26 **Cax online generator** https://support.automation.siemens.com/WW/CAXorder/default.aspx?lang=en&mlfb=3RF2070-1AA26 **Service&Support (Manuals, Certificates, Characteristics, FAQs,...)** https://support.industry.siemens.com/cs/ww/en/ps/3RF2070-1AA26 **Image database (product images, 2D dimension drawings, 3D models, device circuit diagrams, EPLAN macros, ...)** https://www.automation.siemens.com/bilddb/cax_de.aspx?mlfb=3RF2070-1AA26&lang=en **last modified:** 4/4/2026 Subject to change without notice © Copyright Siemens 3RF20701AA26 Page 4/4 5/30/2026
Updated at June 10, 2026
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