{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RU2116-0FJ0","brand":"Siemens","brandSlug":"siemens","productSlug":"3RU2116-0FJ0","canonicalUrl":"https://aoctrl.com/siemens/3RU2116-0FJ0","factsUrl":"https://aoctrl.com/api/mcp/products/3RU2116-0FJ0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RU2116-0FJ0 thermal overload relay, size S00, Class 10 trip, 690 V rated, 50-60 Hz, with integrated auxiliary switch, direct contactor mounting.","salesMarkdown":"## SIRIUS 3RU2116-0FJ0 — thermal overload relay for motor protection The Siemens 3RU2116-0FJ0 is a SIRIUS thermal overload relay in the compact size S00 frame, designed to protect motors against overload and phase failure by monitoring the motor current and tripping the associated contactor when the thermal model exceeds the set threshold. ## Trip class and what it means for the motor circuit Class 10 is the standard trip class for IEC motor starters driving pumps, fans, and compressors where the motor reaches full speed within 10 seconds. The thermal bimetallic release tracks the motor's thermal replica — it allows the starting current to pass without nuisance tripping but protects against sustained overloads that would damage the winding insulation. ## Physical fit and contactor integration It mounts directly onto the contactor via the fastening method specified for contactor mounting, so no additional DIN-rail space is consumed; the relay sits on top of the contactor and the main power connections pass through the relay's ring cable lug terminals (M3 screw size). The screwdriver shaft diameter is 5-6 mm with a Pozidriv PZ2 tip for the terminal screws. ## Auxiliary contact ratings and the tripped signal The integrated auxiliary switch provides a 'Tripped' signal contact — this is the N/C or N/O contact that changes state when the relay trips, used to signal the PLC or annunciator that the motor has been disconnected. For DC control circuits at 24 V, the 2 A rating is sufficient for most PLC input modules or relay coils; at 125 V DC the rating drops to 0.22 A, so confirm the load current in the signal loop at the operating voltage. ## Environmental limits and temperature compensation Temperature compensation is active from -40 °C to +60 °C, meaning the trip curve stays accurate across that range — important for outdoor enclosures or unheated plant areas where the ambient temperature swings. Power dissipation per pole is 1.6 W at rated current — three poles total 4.8 W heat inside the enclosure. This is low enough that no forced cooling is needed in a standard IP54 panel, but it should be factored into the enclosure thermal budget when the starter is densely packed. The MTTF figure of 2,280 years with high demand rate reflects the mechanical reliability of the bimetallic mechanism in a safety-related application — this is a statistical figure for the failure rate in the safe state, not a service life guarantee.","metaTitle":"Siemens 3RU2116-0FJ0 SIRIUS Overload Relay, Size S00","metaDescription":"Siemens 3RU2116-0FJ0 SIRIUS thermal overload relay, size S00, Class 10 trip. Rated 690 V, 50-60 Hz, with integrated auxiliary contacts.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Overload Relays"],"specifications":{"Note":"for message \"Tripped\"","Depth":"70 mm","Width":"45 mm","title":"3RU2116-0FJ0","Height":"76 mm","at 24 V":"2 A","at 60 V":"0.3 A","Per Pole":"1.6 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","Trip Class":"CLASS 10","Rated Value":"690 V","description":"Overload relay 0.35...0.50 A Thermal For motor protection Size S00, Class 10 Contactor mounting Main circuit: Ring cable lug Auxiliary circuit: ring cable lug Manual-Automatic-Reset","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":"M3","Mounting Position":"any","Product Brand Name":"SIRIUS","Product Designation":"thermal overload relay","at 400 V rated value":"0.12 kW","at 480 V rated value":"0.5 A","at 500 V rated value":"0.18 kW","at 600 V rated value":"0.5 A","at 690 V rated value":"0.25 kW","Size Of Overload Relay":"S00","For Main Current Circuit":"Ring cable lug connection","Temperature Compensation":"-40 ... +60 °C","MTTF with high demand rate":"2 280 y","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)":"10/01/2009","Design Of The Auxiliary Switch":"integrated","Design Of The Overload Release":"thermal","Operating Frequency Rated Value":"50 ... 60 Hz","Operational Current Rated Value":"0.5 A","For Auxiliary And Control Circuit":"ring terminal lug connection","Between Main And Auxiliary Circuit":"440 V","Relative Humidity During Operation":"10 ... 95 %","Display Version For Switching Status":"Slide switch","For Main Contacts For Ring Cable Lug":"1.2 ... 0.8 N·m","Surge Voltage Resistance Rated Value":"6 kV","Of The Auxiliary And Control Contacts":"M3","Between Auxiliary And Auxiliary Circuit":"440 V","reference code according to IEC 81346-2":"F","Number Of Poles For Main Current Circuit":"3","For Auxiliary Contacts For Ring Cable Lug":"0.8 ... 1.2 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","operational current at AC-3e at 400 V rated value":"0.5 A","Size Of Contactor Can Be Combined Company-Specific":"S00","Outer Diameter Of The Usable Ring Cable Lug Maximum":"7.5 mm","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":"4.8 W","Adjustable Current Response Value Current Of The Current-Dependent Overload Release":"0.35 ... 0.5 A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/70d5eccf478638c395d73efb09083d20.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=207721&mlfb=3RU2116-0FJ0"},"ai":{"faq":[{"question":"What does the 'Tripped' message note on the 3RU2116-0FJ0 mean?","answer":"The note indicates that the integrated auxiliary switch provides a signal contact that changes state when the overload relay trips. This contact is used to send a 'Tripped' status to a PLC, HMI, or alarm panel, confirming the motor has been disconnected due to an overload condition."},{"question":"What is the physical size of the 3RU2116-0FJ0 and how does it mount?","answer":"It mounts directly onto the contactor — no separate DIN-rail space needed — using the contactor mounting fastening method. Main power connections use ring cable lugs with M3 screws."},{"question":"What trip class is the 3RU2116-0FJ0 and what motors does it suit?","answer":"This suits standard AC motors for pumps, fans, and compressors that reach full speed within 10 seconds. For high-inertia loads with longer acceleration times, a Class 20 or Class 30 relay would be needed."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RU2116-0FJ0","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/3RU2116-0FJ0 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-22T19:47:38.189Z","lastPublished":"2026-07-22T19:47:38.189Z","indexable":true}}