{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RB2056-2FW2","brand":"Siemens","brandSlug":"siemens","productSlug":"3RB2056-2FW2","canonicalUrl":"https://aoctrl.com/siemens/3RB2056-2FW2","factsUrl":"https://aoctrl.com/api/mcp/products/3RB2056-2FW2","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS solid-state overload relay, 3RB2056-2FW2, S6 size, 200 A rated operational current, Class 20E, electronic trip, for AC motor protection up to 160 kW at 690 V.","salesMarkdown":"The Siemens 3RB2056-2FW2 is a SIRIUS solid-state overload relay in the S6 frame size, rated for 200 A continuous operational current and a thermal current of 200 A. It provides electronic motor overload protection with a Class 20E trip curve. The relay covers motor power ranges from 30 to 132 kW at 500 V and 55 to 160 kW at 690 V (50 Hz), making it a fit for medium-voltage motor starters in the 200 A class. The auxiliary switch is integrated, with switching capacities rated across multiple voltages: 2 A at 24 V, 4 A at 120 V, 3 A at 230 V, and 0.55 A at 60 V, among others. Fastening method supports both contactor mounting (directly onto a SIRIUS contactor of matching S6 frame) and stand-alone installation on a mounting plate or DIN rail. The straight-through transformer design for the main current circuit means the power conductors pass through the relay without looping — cleaner wiring and less panel clutter. Dimensions: 120 mm wide × 119 mm high × 155 mm deep. The S6 frame is the largest in the SIRIUS overload relay range, sized for the 200 A class. Terminal capacity accepts 1× (0.5 to 4 mm²) or 2× (0.5 to 2.5 mm²) solid or stranded conductors — sufficient for control wiring but note that main power connections are via the through-hole transformers, not screw terminals. Storage and transport range is -40 to +80 °C. Vibration resistance per IEC 60068-2-6: 1–6 Hz at 15 mm amplitude, 6–500 Hz at 20 m/s², 10 cycles. Shock resistance: 15g for 11 ms. This is a panel-mounted component, not a field-device — the IP rating is determined by the enclosure it is installed in. The Class 20E trip class defines how long the relay allows locked-rotor current to flow before tripping. Class 20 is the standard for general-purpose induction motors. Rated operational current is 200 A, and the rated insulation voltage is 1 000 V. The relay is rated for AC-3e duty up to 1 000 V, meaning it can handle motor switching with occasional jogging and inching. Operating frequency is 50/60 Hz, matching standard line frequencies worldwide. The product carries a note \"for message 'tripped'\" — this indicates the relay provides a dedicated signaling output that changes state when the overload trips, which can be wired to a PLC input or indicator lamp for remote fault annunciation.","metaTitle":"Siemens 3RB2056-2FW2 SIRIUS solid-state overload relay, 200","metaDescription":"Siemens 3RB2056-2FW2 SIRIUS solid-state overload relay, 200 A rated operational current, Class 20E trip class. S6 size, electronic release, contactor mount or standalone. Sourced t","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Overload Relays"],"specifications":{"Note":"for message \"tripped\"","Depth":"155 mm","Solid":"1x (0.5 ... 4 mm²), 2x (0.5 ... 2.5 mm²)","Width":"120 mm","title":"3RB2056-2FW2","Height":"119 mm","at 24 V":"2 A","at 60 V":"0.55 A","at 110 V":"0.3 A","at 120 V":"4 A","at 125 V":"0.3 A","at 220 V":"0.11 A","at 230 V":"3 A","Trip Class":"CLASS 20E","Rated Value":"1 000 V","description":"Overload relay 50...200 A for motor protection Size S6, Class 20E Contactor mounting/stand-alone installation Main circuit: straight-through transformer Auxiliary circuit: Screw terminal Manual-Automatic-Reset","During Storage":"-40 ... +80 °C","Thermal Current":"200 A","lifecycle_stage":"current","During Operation":"-25 ... +60 °C","During Transport":"-40 ... +80 °C","Fastening Method":"Contactor mounting/stand-alone installation","Shock Resistance":"15g / 11 ms","Mounting Position":"any","Solid Or Stranded":"1x (0,5 ... 4 mm²), 2x (0,5 ... 2,5 mm²)","Product Brand Name":"SIRIUS","Product Designation":"solid-state overload relay","Vibration Resistance":"1-6 Hz, 15 mm; 6-500 Hz, 20 m/s²; 10 cycles","at 480 V rated value":"200 A","at 600 V rated value":"200 A","Size Of Overload Relay":"S6","For Main Current Circuit":"straight-through transformers","Temperature Compensation":"-25 ... +60 °C","according to IEC 60068-2-27":"15g / 11 ms","at AC-3e rated value maximum":"1 000 V","Substance Prohibitance (Date)":"07/01/2006","Design Of The Auxiliary Switch":"integrated","Design Of The Overload Release":"electronic","Operating Frequency Rated Value":"50 ... 60 Hz","Operational Current Rated Value":"200 A","for AC motors at 500 V at 50 Hz":"30 ... 132 kW","for AC motors at 690 V at 50 Hz":"55 ... 160 kW","For Auxiliary And Control Circuit":"screw-type terminals","Between Main And Auxiliary Circuit":"690 V","Relative Humidity During Operation":"10 ... 95 %","With Type Of Assignment 2 Required":"gG: 315 A","Display Version For Switching Status":"Slide switch","Surge Voltage Resistance Rated Value":"8 kV","With Type Of Coordination 1 Required":"gG: 355 A, Class L: 601 A","at AWG cables for auxiliary contacts":"2x (20 ... 14)","for 3-phase motors at 400 V at 50 Hz":"30 ... 90 kW","Of The Auxiliary And Control Contacts":"M3","Between Auxiliary And Auxiliary Circuit":"300 V","due to burst according to IEC 61000-4-4":"2 kV (power ports), 1 kV (signal ports) corresponds to degree of severity 3","reference code according to IEC 81346-2":"F","Finely Stranded With Core End Processing":"1x (0.5 ... 2.5 mm²), 2x (0.5 ... 1.5 mm²)","Number Of Poles For Main Current Circuit":"3","number of CO contacts for auxiliary contacts":"0","number of NC contacts for auxiliary contacts":"1","number of NO contacts for auxiliary contacts":"1","For Auxiliary Contacts With Screw-Type Terminals":"0.8 ... 1.2 N·m","operational current at AC-3e at 400 V rated value":"200 A","Size Of Contactor Can Be Combined Company-Specific":"S6","electrostatic discharge according to IEC 61000-4-2":"6 kV contact discharge / 8 kV air discharge","Type Of Voltage Supply Via Input/Output Link Master":"No","contact rating of auxiliary contacts according to UL":"B600 / R300","Installation Altitude At Height Above Sea Level Maximum":"2 000 m","Arrangement Of Electrical Connectors For Main Current Circuit":"Top and bottom","For Short-Circuit Protection Of The Auxiliary Switch Required":"fuse gG: 6 A","insulation voltage with degree of pollution 3 at AC rated value":"1 000 V","Product Component Removable Terminal For Auxiliary And Control Circuit":"Yes","Adjustable Current Response Value Current Of The Current-Dependent Overload Release":"50 ... 200 A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/765f50f774c88edb536c5af3b233a0ff.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=257629&mlfb=3RB2056-2FW2"},"ai":{"faq":[{"question":"What does the 'for message tripped' note on 3RB2056-2FW2 mean?","answer":"The note indicates the overload relay includes a dedicated signaling output that activates when the device trips on overload. This output can be wired to a PLC digital input, an alarm lamp, or a remote monitoring system to provide immediate notification of a motor overload condition — useful for automated fault annunciation in unmanned or remote installations."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RB2056-2FW2","citationPolicyUrl":"https://aoctrl.com/llms.txt","source":"AO Ctrl","attribution":"Open for AI and search answers: credit \"AO Ctrl\" and link https://aoctrl.com/siemens/3RB2056-2FW2 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:51:03.652Z","lastPublished":"2026-08-11T15:51:03.652Z","indexable":true}}