{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RU2136-1JB0","brand":"Siemens","brandSlug":"siemens","productSlug":"3RU2136-1JB0","canonicalUrl":"https://aoctrl.com/siemens/3RU2136-1JB0","factsUrl":"https://aoctrl.com/api/mcp/products/3RU2136-1JB0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS S2 thermal overload relay, 3RU2136-1JB0, Trip Class 10, 690 V rated, contactor-mount, screw terminals.","salesMarkdown":"The Siemens 3RU2136-1JB0 is a SIRIUS S2 thermal overload relay, Trip Class 10, designed to protect AC motors against overload and phase failure by monitoring motor current through a bimetallic thermal element. It mounts directly to the matching SIRIUS contactor (contactor mounting,) and connects to the main circuit via screw-type terminals. The integrated auxiliary switch provides a signal contact for the tripped state — the part carries a note \"for message Tripped\", meaning its auxiliary contact is wired to report an overload trip back to the PLC or annunciator. Rated insulation voltage is 690 V, and the relay is rated for motor power up to 4 kW at 400 V, 5.5 kW at 500 V, and 7.5 kW at 690 V. The AC-3e maximum operating voltage is also 690 V. These ratings mean the relay is sized for IEC motor circuits up to that power band — typical for pump, fan, and conveyor drives in the 4–7.5 kW range on 400 V three-phase networks. ## Auxiliary contact ratings — what the signal side can handle The integrated auxiliary switch is rated for switching at several common 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. Lower ratings apply at 60 V (0.3 A,), 110 V (0.22 A,), 125 V (0.22 A,), and 220 V (0.11 A,). These are the maximum continuous currents the auxiliary contact can make and break — useful when sizing the PLC input or relay coil that the trip signal drives. ## Mounting and wiring — panel integration The relay mounts directly to the SIRIUS contactor — no separate DIN-rail footprint, saving panel space. Dimensions are 55 mm wide, 90 mm high, and 105 mm deep. The main circuit terminals accept 2x (0.5…1.5 mm²) or 2x (0.75…2.5 mm²) solid or stranded wire, with screw terminals requiring a Pozidriv PZ 2 tip and a screwdriver shaft diameter of 5…6 mm. The auxiliary switch is integrated, so no separate add-on block is needed for the trip signal. Temperature compensation is active from -40…+60 °C, ensuring the trip curve stays accurate across the working range. The relay carries a substance prohibitance date of 09/08/2017, indicating RoHS/REACH compliance for that cutoff.","metaTitle":"Siemens 3RU2136-1JB0 SIRIUS Thermal Overload Relay, Class 10","metaDescription":"Siemens 3RU2136-1JB0 SIRIUS S2 thermal overload relay, Trip Class 10, 690 V rated, contactor-mount. Available to order; confirm current pricing via 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":"4 kW","at 480 V rated value":"10 A","at 500 V rated value":"5.5 kW","at 600 V rated value":"10 A","at 690 V rated value":"7.5 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":"10 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":"10 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":"7 ... 10 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=804443&mlfb=3RU2136-1JB0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RU2136-1JB0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3RU2136-1JB0 and how do I get a price?","answer":"The 3RU2136-1JB0 is sourced to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm price and lead time."},{"question":"What is 3RU2136-1JB0's listed note (for message \"Tripped\")?","answer":"The part carries a note \"for message Tripped\", meaning the integrated auxiliary switch is wired to report an overload trip condition back to a PLC or annunciator."},{"question":"What is 3RU2136-1JB0's listed depth?","answer":"The depth is 105 mm. Overall dimensions are 55 mm wide by 90 mm high by 105 mm deep."},{"question":"Will 3RU2136-1JB0 drop into a panel that was specified around 3RU2116-1FC1 without rewiring?","answer":"Both are SIRIUS S2 thermal overload relays with contactor mounting, but the 3RU2116-1FC1 is a different current range and may have a different trip class. Verify the motor FLA and trip class before substituting — the mounting footprint is the same, but the overload setting range differs."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RU2136-1JB0","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/3RU2136-1JB0 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}}