{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RU2136-1HB0","brand":"Siemens","brandSlug":"siemens","productSlug":"3RU2136-1HB0","canonicalUrl":"https://aoctrl.com/siemens/3RU2136-1HB0","factsUrl":"https://aoctrl.com/api/mcp/products/3RU2136-1HB0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RU2136-1HB0 thermal overload relay, Size S2, Trip Class 10, rated 690 V, contactor mounting.","salesMarkdown":"## SIRIUS 3RU2136-1HB0 — Thermal Overload Relay, Size S2, Class 10 The Siemens 3RU2136-1HB0 is a SIRIUS thermal overload relay, Size S2, designed for motor protection with Trip Class 10 tripping characteristic. It mounts directly onto a contactor and provides bimetallic thermal overload protection for three-phase motors up to 690 V rated voltage. The integrated auxiliary switch provides status signalling: the 'Tripped' message contact changes state when the relay has operated, giving the PLC or HMI a direct fault indication without needing an external limit switch. The integrated auxiliary switch is rated for multiple control voltages: 2 A at 24 V, 3 A at 120 V, 2 A at 230 V, 1 A at 400 V, and 0.75 A at 690 V. These are the maximum continuous currents the auxiliary contacts can switch at each voltage level — use the 690 V row when the control circuit is line-fed rather than transformer-isolated. At lower control voltages (24 V, 60 V, 110 V, 125 V, 220 V) the ratings are 2 A, 0.3 A, 0.22 A, 0.22 A, and 0.11 A respectively — the 60 V and 125 V entries cover non-standard control supplies sometimes found in marine or legacy installations. ## Motor Power Ratings — Sizing to the Load At 400 V rated value the relay handles 3 kW; at 500 V it handles 4 kW; at 690 V it handles 5.5 kW. These correspond to the motor full-load current the relay can protect when set correctly. The 480 V and 600 V entries (8 A each) cover North American 60 Hz installations where the relay is applied at those voltages. ## Mounting & Integration — What Fits Where Fastening method is contactor mounting — the relay clips directly onto the matching SIRIUS contactor, no DIN rail required. Dimensions: 55 mm wide, 90 mm high, 105 mm deep. Main circuit terminals accept screw-type connections: 2× (0.5…1.5 mm²) or 2× (0.75…2.5 mm²) solid or stranded. Use a Pozidriv PZ2 screwdriver with 5–6 mm shaft diameter. Temperature compensation is active from -40 to +60 °C, meaning the relay's trip characteristic stays accurate across that span without manual adjustment. Substance prohibitance date of 09/08/2017 aligns with RoHS and REACH compliance documentation available from Siemens for this part.","metaTitle":"Siemens 3RU2136-1HB0 SIRIUS Thermal Overload Relay, Class 10","metaDescription":"Siemens 3RU2136-1HB0 SIRIUS thermal overload relay, Size S2, Trip Class 10, rated 690 V. Current lifecycle. 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":"105 mm","Width":"55 mm","Height":"90 mm","at 24 V":"2 A","at 60 V":"0.3 A","Per Pole":"2.5 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":"3 kW","at 480 V rated value":"8 A","at 500 V rated value":"4 kW","at 600 V rated value":"8 A","at 690 V rated value":"5.5 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)":"09/08/2017","Design Of The Auxiliary Switch":"integrated","Design Of The Overload Release":"thermal","Operating Frequency Rated Value":"50 ... 60 Hz","Operational Current Rated Value":"8 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":"8 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":"7.5 W","Adjustable Current Response Value Current Of The Current-Dependent Overload Release":"5.5 ... 8 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":null,"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=804441&mlfb=3RU2136-1HB0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RU2136-1HB0/alternatives.json"},"ai":{"faq":[{"question":"What is the 'Tripped' message note on 3RU2136-1HB0?","answer":"The note 'for message Tripped' refers to the integrated auxiliary switch contact that changes state when the overload relay has tripped, providing a direct fault signal to a PLC or indicator."},{"question":"What are the key ratings of 3RU2136-1HB0?","answer":"Trip Class 10, rated voltage 690 V, Size S2. Motor power ratings: 3 kW at 400 V, 4 kW at 500 V, 5.5 kW at 690 V. Auxiliary contact: 2 A at 24 V, 3 A at 120 V, 2 A at 230 V, 1 A at 400 V, 0.75 A at 690 V."},{"question":"Where can I buy 3RU2136-1HB0 and how is it quoted?","answer":"This part is sourced to order against an RFQ through independent distribution channels. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm price and lead time."},{"question":"What compliance documentation does Siemens provide for 3RU2136-1HB0?","answer":"The part carries a substance prohibitance date of 09/08/2017, consistent with RoHS and REACH compliance. Standard Siemens documentation includes the CE declaration and, where applicable, UL/CSA certification for the SIRIUS family."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RU2136-1HB0","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/3RU2136-1HB0 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}}