{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RU1146-4JB1-ZX95","brand":"Siemens","brandSlug":"siemens","productSlug":"3RU1146-4JB1-ZX95","canonicalUrl":"https://aoctrl.com/siemens/3RU1146-4JB1-ZX95","factsUrl":"https://aoctrl.com/api/mcp/products/3RU1146-4JB1-ZX95","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS thermal overload relay, 3RU1146-4JB1-ZX95, CLASS 10, Size S3, screw terminals, 140 mm depth, IP20 front, ATEX certified.","salesMarkdown":"The relay dissipates 5.7 W per pole, which matters for enclosure thermal budgeting — in a multi-motor panel, summing pole dissipation across several relays can push internal cabinet temperature above the -20 to +70 °C operating range if ventilation is marginal. Auxiliary contact ratings cover both standard control voltages: 1 A at 24 V, 3 A at 120 V, 2 A at 230 V, and 1 A at 400 V. These are the make/break capacities for the PLC digital input or contactor coil circuit the relay feeds — the 400 V 1 A rating confirms it can switch a 400 V contactor coil directly without an interposing relay. With type of coordination 2 requiring a 125 A gG fuse and type 1 requiring 200 A gG, the upstream short-circuit protection device is specified — a panel builder can size the branch circuit fuse without guesswork. The relay itself withstands 8 kV surge voltage, covering transient immunity for industrial mains. Stand-alone installation with a vertical mounting surface; the relay can be rotated ±135° or tilted ±45° front-to-back. Side clearance of 6 mm and zero clearance in other directions means it can be packed tightly against adjacent devices on the DIN rail or panel plate — useful when retrofitting into a crowded enclosure. Dimensions: 70 mm wide, 120 mm high, 140 mm deep. Main circuit terminals accept stranded wire from 10 to 70 mm² or 2x (10 to 50 mm²); auxiliary and control circuit terminals accept 2x (0.5 to 1.5 mm²) solid or 2x (0.75 to 2.5 mm²) stranded. All terminals are screw-type — standard for panel wiring, no special tooling required. Rated for 100 % relative humidity during operation and a storage/transport range of -55 to +80 °C — suitable for unheated warehouses or container shipping. Shock resistance of 8g for 10 ms covers normal transport and panel vibration. ATEX certification DMT 98 ATEX G 001 permits installation in potentially explosive gas atmospheres, provided the associated contactor and enclosure meet the system requirements. Substance prohibition date of 07/01/2006 aligns with RoHS compliance — the relay is free of the six original restricted substances as of that date.","metaTitle":"Siemens 3RU1146-4JB1-ZX95 SIRIUS Thermal Overload Relay, CLA","metaDescription":"Siemens SIRIUS 3RU1146-4JB1-ZX95 thermal overload relay, CLASS 10 trip, S3 size, 140 mm depth, ATEX, IP20 front. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Overload Relays"],"specifications":{"Depth":"140 mm","Solid":"2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²)","Width":"70 mm","Height":"120 mm","Upwards":"0 mm","at 24 V":"1 A","Forwards":"0 mm","Per Pole":"5.7 W","Stranded":"2x (10 ... 50 mm²), 10 ... 70 mm²","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","Backwards":"0 mm","Downwards":"0 mm","Trip Class":"CLASS 10","At The Side":"6 mm","During Storage":"-55 ... +80 °C","lifecycle_stage":"current","During Operation":"-20 ... +70 °C","During Transport":"-55 ... +80 °C","Fastening Method":"stand-alone installation","Shock Resistance":"8g / 10 ms","Mounting Position":"with vertical mounting surface +/-135° rotatable, with vertical mounting surface +/- 45° tiltable to the front and back","Product Brand Name":"SIRIUS","Type Of Protection":"DMT 98 ATEX G 001","Product Designation":"thermal overload relay","Size Of Overload Relay":"S3","For Main Current Circuit":"screw-type terminals","Substance Prohibitance (Date)":"07/01/2006","at AWG cables for main contacts":"2x (10 ... 1/0), 1x (10 ... 2/0)","protection class IP on the front":"IP20","For Auxiliary And Control Circuit":"screw-type terminals","Relative Humidity During Operation":"100 %","With Type Of Assignment 2 Required":"gG: 125 A","Surge Voltage Resistance Rated Value":"8 kV","With Type Of Coordination 1 Required":"gG: 200 A","at AWG cables for auxiliary contacts":"2x (20 ... 16), 2x (18 ... 14)","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","Touch Protection Against Electrical Shock":"finger-safe","number of CO contacts for auxiliary contacts":"0","number of NC contacts for auxiliary contacts":"1","number of NO contacts for auxiliary contacts":"1","Size Of Contactor Can Be Combined Company-Specific":"S3","Installation Altitude At Height Above Sea Level Maximum":"2 000 m","For Short-Circuit Protection Of The Auxiliary Switch Required":"fuse gL/gG: 6 A, quick: 10 A","insulation voltage with degree of pollution 3 at AC rated value":"1 000 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":"17.1 W","Adjustable Current Response Value Current Of The Current-Dependent Overload Release":"45 ... 63 A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=320160&mlfb=3RU1146-4JB1-ZX95","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RU1146-4JB1-ZX95/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3RU1146-4JB1-ZX95 and what is the lead time?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm delivery commitment."},{"question":"What is the closest functional second-source for 3RU1146-4JB1-ZX95?","answer":"The 3RU2116-1FC1 is a SIRIUS thermal overload relay in a different size class (S2 vs S3). It will not drop into a panel wired for the S3 footprint without rewiring — the mounting hole pattern and terminal spacing differ. Stick with the S3 size for a direct mechanical and electrical swap."},{"question":"What compliance documentation does this relay carry?","answer":"The relay carries ATEX certification DMT 98 ATEX G 001 for gas atmospheres and RoHS compliance per substance prohibition date 07/01/2006. IP20 front protection is the ingress rating."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RU1146-4JB1-ZX95","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/3RU1146-4JB1-ZX95 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}}