{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RU2136-4QB0","brand":"Siemens","brandSlug":"siemens","productSlug":"3RU2136-4QB0","canonicalUrl":"https://aoctrl.com/siemens/3RU2136-4QB0","factsUrl":"https://aoctrl.com/api/mcp/products/3RU2136-4QB0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS thermal overload relay, 3RU2136-4QB0, CLASS 10, size S2, contactor-mount, 30 kW at 400 V, 57 A at 480/600 V, screw terminals.","salesMarkdown":"## SIRIUS 3RU2136-4QB0 — CLASS 10 thermal overload relay, size S2 The Siemens 3RU2136-4QB0 is a SIRIUS-brand thermal overload relay, size S2, designed for contactor mounting. Rated for motor loads up to 30 kW at 400 V, 37 kW at 500 V, and 55 kW at 690 V, with a maximum current rating of 57 A at both 480 V and 600 V. The auxiliary contacts handle 2 A at 24 V and 230 V, 3 A at 120 V, 1 A at 400 V, and 0.75 A at 690 V — enough for signaling back to a PLC or contactor coil. ## Integration — contactor-mount, size S2, any position Mounts directly onto the matching SIRIUS contactor (size S2) without additional hardware — no DIN rail required, though it can be panel-mounted if needed. Fastening method is contactor mounting; the relay snaps onto the contactor's frame and connects electrically through the power terminals. Acceptable in any mounting position. Screw terminals on the main circuit accept 2× (0.5 to 1.5 mm²) or 2× (0.75 to 2.5 mm²) solid or stranded wire. A Pozidriv PZ2 screwdriver tip (shaft diameter 5–6 mm) is specified for termination. Dimensions: 90 mm high, 55 mm wide, 105 mm deep — fits standard S2 panel cutouts. The integrated auxiliary switch provides the trip-signal output (the \"for message 'Tripped'\" note on the label). Temperature compensation is active over -40 to +60 °C, ensuring the trip curve stays accurate across the operating range.","metaTitle":"Siemens 3RU2136-4QB0 SIRIUS Thermal Overload Relay, CLASS 10","metaDescription":"Siemens 3RU2136-4QB0 SIRIUS thermal overload relay, CLASS 10 trip, size S2, contactor-mount. Rated 30 kW at 400 V, 57 A at 480/600 V. Sourced to order against RFQ. RoHS compliant.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Overload Relays"],"specifications":{"Note":"for message \"Tripped\"","Depth":"105 mm","Width":"55 mm","Height":"90 mm","at 24 V":"2 A","at 60 V":"0.3 A","Per Pole":"5.2 W","at 110 V":"0.22 A","at 120 V":"3 A","at 125 V":"0.22 A","at 220 V":"0.11 A","at 230 V":"2 A","at 400 V":"1 A","at 690 V":"0.75 A","Trip Class":"CLASS 10","Rated Value":"690 V","During Storage":"-55 ... +80 °C","lifecycle_stage":"current","During Operation":"-40 ... +70 °C","During Transport":"-55 ... +80 °C","Fastening Method":"Contactor mounting","For Main Contacts":"M6","Mounting Position":"any","Solid Or Stranded":"2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²)","Product Brand Name":"SIRIUS","Product Designation":"thermal overload relay","at 400 V rated value":"30 kW","at 480 V rated value":"57 A","at 500 V rated value":"37 kW","at 600 V rated value":"57 A","at 690 V rated value":"55 kW","Size Of Overload Relay":"S2","For Main Current Circuit":"screw-type terminals","Temperature Compensation":"-40 ... +60 °C","Design Of Screwdriver Shaft":"Diameter 5 ... 6 mm","Size Of The Screwdriver Tip":"Pozidriv PZ 2","at AC-3e rated value maximum":"690 V","Substance Prohibitance (Date)":"10/15/2014","Design Of The Auxiliary Switch":"integrated","Design Of The Overload Release":"thermal","Operating Frequency Rated Value":"50 ... 60 Hz","Operational Current Rated Value":"57 A","at AWG cables for main contacts":"2x (18 ... 2), 1x (18 ... 1)","For Auxiliary And Control Circuit":"screw-type terminals","Between Main And Auxiliary Circuit":"690 V","Relative Humidity During Operation":"10 ... 95 %","Display Version For Switching Status":"Slide switch","Surge Voltage Resistance Rated Value":"6 kV","at AWG cables for auxiliary contacts":"2x (20 ... 16), 2x (18 ... 14)","Of The Auxiliary And Control Contacts":"M3","Between Auxiliary And Auxiliary Circuit":"415 V","reference code according to IEC 81346-2":"F","Finely Stranded With Core End Processing":"2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²)","Number Of Poles For Main Current Circuit":"3","For Main Contacts With Screw-Type Terminals":"3 ... 4.5 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","shock resistance according to IEC 60068-2-27":"8g / 11 ms","For Auxiliary Contacts With Screw-Type Terminals":"0.8 ... 1.2 N·m","operational current at AC-3e at 400 V rated value":"57 A","Size Of Contactor Can Be Combined Company-Specific":"S2","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, quick: 10 A","insulation voltage with degree of pollution 3 at AC rated value":"690 V","Product Component Removable Terminal For Auxiliary And Control Circuit":"No","power loss [W] for rated value of the current at AC in hot operating state":"15.6 W","Adjustable Current Response Value Current Of The Current-Dependent Overload Release":"47 ... 57 A","Design Of The Miniature Circuit Breaker For Short-Circuit Protection Of The Auxiliary Switch Required":"6A (SCC less than equal to 0.5 kA; U less than equal to 260V)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$58.29","priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/c063c21d45bb79954523f24f487aef5c.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=234105&mlfb=3RU2136-4QB0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RU2136-4QB0/alternatives.json"},"ai":{"faq":[{"question":"What does the 'for message Tripped' note mean on this relay?","answer":"It indicates that the integrated auxiliary switch changes state when the relay trips, providing a signal (e.g., to a PLC input or indicator lamp) that the overload has operated."},{"question":"What are the mounting dimensions of 3RU2136-4QB0?","answer":"Height 90 mm, width 55 mm, depth 105 mm. It is designed for direct contactor mounting onto an S2-frame contactor."},{"question":"Where can I buy 3RU2136-4QB0 and how is it quoted?","answer":"Sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time."},{"question":"What compliance documentation does Siemens provide for 3RU2136-4QB0?","answer":"RoHS compliance is confirmed with a substance prohibition date of October 15, 2014. The SIRIUS series typically carries UL, CSA, and CE certifications; verify the specific certificate for your jurisdiction at quote time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RU2136-4QB0","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/3RU2136-4QB0 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-09-02T08:15:54.622Z","lastPublished":"2026-09-02T08:15:54.622Z","indexable":true}}