{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RB2056-1FC2","brand":"Siemens","brandSlug":"siemens","productSlug":"3RB2056-1FC2","canonicalUrl":"https://aoctrl.com/siemens/3RB2056-1FC2","factsUrl":"https://aoctrl.com/api/mcp/products/3RB2056-1FC2","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RB2056-1FC2 solid-state overload relay, S6 size, 200 A rated operational current, Class 10E trip class, electronic overload release, busbar connection for main current circuit.","salesMarkdown":"The 3RB2056-1FC2 is a SIRIUS solid-state overload relay, size S6, with a rated operational current of 200 A and a Class 10E trip characteristic. Rated for main circuits up to 1000 V (AC-3e) and a thermal current (Ith) of 200 A, it handles the full motor branch current without external bypassing. The busbar connection for the main current circuit keeps voltage drop low in high-current panels. ## Panel fit and mounting flexibility Dimensions are 120 mm wide × 119 mm high × 155 mm deep — the S6 footprint fits standard motor control centre buckets and larger panel enclosures. Fastening method allows either direct contactor mounting (mates with S6 contactors) or stand-alone installation on a mounting plate. The auxiliary switch is integrated — no separate add-on block needed for the trip signal. Main circuit connection uses M8 busbar hardware. ## Auxiliary contact ratings and tripped indication The integrated auxiliary contact provides the tripped signal — the note on the part is for message \"tripped\". These are the make/break capacities for the signalling circuit feeding the PLC or alarm annunciator. ## Environmental tolerance and compliance Operating temperature range is -25…+60 °C with full temperature compensation, meaning the trip curve stays accurate across the panel's internal ambient. Storage and transport range is -40…+80 °C. Shock resistance is 15 g for 11 ms per IEC 60068-2-27; vibration resistance covers 1–6 Hz at 15 mm amplitude and 6–500 Hz at 20 m/s² for 10 cycles. These ratings suit installations on machinery or conveyors with moderate vibration. Rated frequency is 50…60 Hz, covering standard line supplies worldwide. Substance prohibition date of 07/01/2006 aligns with RoHS compliance scope.","metaTitle":"Siemens 3RB2056-1FC2 SIRIUS Solid-State Overload Relay","metaDescription":"Siemens 3RB2056-1FC2 SIRIUS solid-state overload relay, 200 A rated operational current, Class 10E trip, S6 size. Active production, sourced to order.","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":"3RB2056-1FC2","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 10E","Rated Value":"1 000 V","description":"Overload relay 50...200 A for motor protection Size S6, Class 10E Contactor mounting/stand-alone installation Main circuit: busbar connection 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","For Main Contacts":"M8","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":"busbar connection","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","For Main Contacts With Screw-Type Terminals":"10 ... 12 N·m","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":"$142.24 – $387.07","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/edc5c5aaeaea68313fbdf316fbfa20dd.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=484443&mlfb=3RB2056-1FC2"},"ai":{"faq":[{"question":"What does the Class 10E trip class mean for motor protection?","answer":"This matches the starting profile of standard induction motors — enough time for the motor to accelerate under load, but fast enough to prevent thermal damage during a stalled-rotor or jam condition."},{"question":"What is the 3RB2056-1FC2's auxiliary contact rated for at 24 VDC?","answer":"The integrated auxiliary contact is rated 2 A at 24 V for the tripped signal. At 120 V it handles 4 A; at 230 V it drops to 3 A. These are the make/break capacities for the signalling circuit — confirm the connected PLC input or relay coil draw stays within these limits."},{"question":"What compliance documentation does Siemens provide for the 3RB2056-1FC2?","answer":"The part carries a substance prohibition date of 07/01/2006, aligning with RoHS compliance. Standard Siemens documentation includes the declaration of conformity and product certificate — these are available on request with the order."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RB2056-1FC2","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/3RB2056-1FC2 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}}