{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RB2163-4GC2","brand":"Siemens","brandSlug":"siemens","productSlug":"3RB2163-4GC2","canonicalUrl":"https://aoctrl.com/siemens/3RB2163-4GC2","factsUrl":"https://aoctrl.com/api/mcp/products/3RB2163-4GC2","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS solid-state overload relay, 3RB2163-4GC2, 250 A thermal current, adjustable trip classes 5E / 10E / 20E / 30E, 120 mm width, for contactor mounting or standalone installation.","salesMarkdown":"The Siemens SIRIUS 3RB2163-4GC2 is a solid-state overload relay — an electronic motor protection device that monitors current and trips on overload, phase imbalance, or phase loss. It replaces the bimetal strip with a microprocessor-based trip curve, giving you repeatable, temperature-compensated protection shot after shot. Rated thermal current is 250 A, and the trip class is field-adjustable among CLASS 5E, 10E, 20E, and 30E — so you can match the relay to the motor's starting profile: fast trip for pumps, slower for high-inertia loads like fans or centrifuges. The operating frequency is 50 to 60 Hz, covering standard line frequencies worldwide. Mounting is flexible: the relay snaps onto a SIRIUS contactor (sizes S10, S12) or can be installed standalone on a panel or DIN rail. The 120 mm width and 119 mm height fit standard SIRIUS panel layouts — no surprises when you're laying out a control cabinet. ## Trip logic and signaling The relay trips when motor current exceeds the upper setting value by a factor of 3.5, and resets when current drops below the lower setting value. The auxiliary switch is integrated and provides a dedicated \"tripped\" signal contact — useful for feeding a PLC input or a panel indicator so the line operator knows exactly why the motor stopped. Switching capacity of the auxiliary contact varies by voltage: 4 A at 120 V, 3 A at 230 V, 2 A at 24 V, and lower ratings at 60 V, 110 V, 125 V, and 220 V. That covers most control-circuit voltages you'll find in a panel — just verify the contact rating against your PLC input or relay coil draw. The relay is temperature-compensated across the operating range, so the trip curve doesn't drift when the panel heats up in summer. Vibration resistance is 1-6 Hz at 15 mm amplitude, then 6-500 Hz at 20 m/s² for 10 cycles; shock resistance is 15g for 11 ms. That's enough for most industrial environments — conveyors, pumps, compressors, machine tools. Wiring: main circuit connections accept busbar connection or solid/stranded wire — 1x (0.5 to 4 mm²) or 2x (0.5 to 2.5 mm²) per terminal. The main contact tightening torque is M10.","metaTitle":"Siemens 3RB2163-4GC2 SIRIUS Solid-State Overload Relay, 250","metaDescription":"Siemens SIRIUS 3RB2163-4GC2 solid-state overload relay, 250 A thermal current, adjustable trip classes 5E-30E, 120 mm wide, current production. Sourced to order against RFQ.","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":"3RB2163-4GC2","Height":"119 mm","Maximum":"IMotor < upper current setting value x 3.5","Minimum":"IMotor > lower current setting value","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 5E, 10E, 20E and 30E adjustable","Rated Value":"1 000 V","description":"Overload relay 55...250 A for motor protection Size S10/S12, CLASS 5...30E Contactor mounting/stand-alone installation Main circuit: busbar connection Auxiliary circuit: Screw terminal Manual-Automatic-Reset Internal ground fault detection","During Storage":"-40 ... +80 °C","Thermal Current":"250 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":"M10","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":"250 A","at 600 V rated value":"250 A","Size Of Overload Relay":"S10, S12","For Main Current Circuit":"busbar connection","Temperature Compensation":"-25 ... +60 °C","according to IEC 60068-2-27":"15g / 11 ms; Signaling contact 97 / 98 in position \"Tripped\": 8g / 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":"250 A","for AC motors at 500 V at 50 Hz":"45 ... 160 kW","for AC motors at 690 V at 50 Hz":"55 ... 250 kW","for remote-reset function at DC":"24 V","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: 500 A","Display Version For Switching Status":"Slide switch","Surge Voltage Resistance Rated Value":"8 kV","With Type Of Coordination 1 Required":"gG: 500 A, Class L: 700 A","for 3-phase motors at 400 V at 50 Hz":"30 ... 132 kW","Of The Auxiliary And Control Contacts":"M3","for AWG cables for auxiliary contacts":"2x (20 ... 14)","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":"20 ... 22 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":"250 A","Size Of Contactor Can Be Combined Company-Specific":"S10, S12","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","Response Time Of The Grounding Protection In Settled State":"1 000 ms","Response Value Current Of The Grounding Protection Minimum":"0.75 x IMotor","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":"55 ... 250 A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$198.12","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/bdca318c27be9e4fdee9b8c244c4725f.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=343743&mlfb=3RB2163-4GC2"},"ai":{"faq":[{"question":"Where can I buy 3RB2163-4GC2 and how do I get a price?","answer":"The 3RB2163-4GC2 is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ to receive a firm price and lead time."},{"question":"What is the \"tripped\" message on the 3RB2163-4GC2?","answer":"The relay is designed to output a \"tripped\" signal via its integrated auxiliary switch when an overload condition is detected. This signal can be wired to a PLC input or panel indicator for immediate fault identification."},{"question":"What is the depth of the 3RB2163-4GC2?","answer":"The depth is 155 mm. Combined with the 120 mm width and 119 mm height, it fits standard SIRIUS S10/S12 panel layouts."},{"question":"What compliance documentation does the 3RB2163-4GC2 carry?","answer":"The relay is RoHS-compliant per the substance prohibition date of 07/01/2006. It is designed to IEC standards for solid-state overload relays."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RB2163-4GC2","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/3RB2163-4GC2 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}}