{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RU1146-4HD0","brand":"Siemens","brandSlug":"siemens","productSlug":"3RU1146-4HD0","canonicalUrl":"https://aoctrl.com/siemens/3RU1146-4HD0","factsUrl":"https://aoctrl.com/api/mcp/products/3RU1146-4HD0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS thermal overload relay, S3 size, Trip Class 10, 3RU1146-4HD0, screw-type main terminals, cage-clamp auxiliary contacts.","salesMarkdown":"## Trip Class and Motor Protection The S3 size handles the current range typical for this frame; the per-pole power dissipation is 5.1 W, which factors into enclosure thermal calculations. Mounts directly on the contactor — no separate DIN rail needed for the relay itself. The mounting position allows rotation ±135° on a vertical surface and tilting ±45° front-to-back, giving panel builders flexibility in tight layouts. Main circuit terminals accept solid conductors 2x (0.5... 2.5 mm²) or stranded 2x (10... 50 mm²) and single 10... 70 mm². AWG equivalents for main contacts: 2x (10... 1/0) or 1x (10... 2/0). Auxiliary circuit uses cage-clamp terminals accepting 2x (20... 14) AWG. The auxiliary contact ratings: 1 A at 24 V, 3 A at 120 V, 2 A at 230 V, 1 A at 400 V. For Type 1 coordination (relay may need replacement after fault) requires a gG fuse rated 160 A. Surge voltage resistance is 8 kV. The relay carries ATEX approval DMT 98 ATEX G 001 for use in potentially explosive atmospheres.","metaTitle":"Siemens 3RU1146-4HD0 SIRIUS Thermal Overload Relay, Trip Cla","metaDescription":"Siemens 3RU1146-4HD0 SIRIUS thermal overload relay, S3 size, Trip Class 10. Rated for motor protection with screw-type main terminals and cage-clamp aux contacts. Currently in prod","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Overload Relays"],"specifications":{"Depth":"140 mm","Solid":"2x (0.5 ... 2.5 mm²)","Width":"70 mm","Height":"120 mm","Upwards":"0 mm","at 24 V":"1 A","Forwards":"0 mm","Per Pole":"5.1 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":"Contactor mounting","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":"Cage Clamp 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: 160 A","at AWG cables for auxiliary contacts":"2x (20 ... 14)","reference code according to IEC 81346-2":"F","Finely Stranded With Core End Processing":"2x (0.5 ... 1.5 mm²)","Number Of Poles For Main Current Circuit":"3","Touch Protection Against Electrical Shock":"finger-safe","Finely Stranded Without Core End Processing":"2x (0.5 ... 1.5 mm²)","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":"15.3 W","Adjustable Current Response Value Current Of The Current-Dependent Overload Release":"36 ... 50 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=531369&mlfb=3RU1146-4HD0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RU1146-4HD0/alternatives.json"},"ai":{"faq":[{"question":"What is the depth of the 3RU1146-4HD0?","answer":"The depth is 140 mm, with width 70 mm and height 120 mm."},{"question":"What wire sizes does the 3RU1146-4HD0 accept on the main terminals?","answer":"Solid: 2x (0.5... 2.5 mm²). Stranded: 2x (10... 50 mm²) or single 10... 70 mm². AWG: 2x (10... 1/0) or 1x (10... 2/0)."},{"question":"Can the 3RU1146-4HD0 be used in ATEX-rated environments?","answer":"Yes, it carries ATEX approval DMT 98 ATEX G 001 for use in potentially explosive atmospheres."},{"question":"Where can I buy the 3RU1146-4HD0 and get current pricing?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RU1146-4HD0","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/3RU1146-4HD0 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}}