{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1346-1BD40","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1346-1BD40","canonicalUrl":"https://aoctrl.com/siemens/3RT1346-1BD40","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1346-1BD40","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS S3 power contactor, 3RT1346-1BD40, screw-type terminals, 53 kW at 230 V, 1 000 V insulation, snap-on 35/75 mm rail.","salesMarkdown":"The Siemens 3RT1346-1BD40 is a SIRIUS S3 power contactor — screw-type main and auxiliary terminals, rated for switching motor loads up to 53 kW at 230 V (AC-3 duty) and carrying an insulation voltage of 1 000 V. It mounts on 35 mm or 75 mm standard DIN rail via screw and snap-on fastening, with side-by-side mounting permitted — no gap required between units on the rail. Operating temperature range is -25 to +60 °C, storage -55 to +80 °C, with pollution degree 3 (conductive pollution typical in industrial enclosures). RoHS compliance date is 05/01/2012 per the substance prohibitance entry. Main circuit terminals accept solid conductors: 2x (0.5–1.5 mm²), 2x (0.75–2.5 mm²), max 2x (0.75–4 mm²). Stranded: 2x (10–50 mm²). For AWG: 2x (10–1/0). At 40 °C minimum permissible is 50 mm²; at 60 °C derate to 35 mm². Auxiliary and control circuits also use screw-type terminals; the magnet coil closing power at DC is 15 W. ## Protection and coordination Enclosure protection: IP20 on the front with cover or box terminal; the terminal itself is IP00 — so panel builders need to account for that in the gland plate and fill factor.","metaTitle":"Siemens 3RT1346-1BD40 SIRIUS Power Contactor, S3, 53 kW at 2","metaDescription":"Siemens 3RT1346-1BD40 SIRIUS S3 power contactor, 53 kW at 230 V, screw terminals, snap-on DIN rail. Current production. Quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Contactors"],"specifications":{"Depth":"152 mm","Solid":"2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²), max. 2x (0.75 ... 4 mm²)","Width":"93 mm","at DC":"14 ... 20 ms","Height":"146 mm","Stranded":"2x (10 ... 50 mm²)","Arcing Time":"10 ... 15 ms","Rated Value":"42 V","On The Front":"IP20; IP20 on the front with cover / box terminal","Initial Value":"0.8","During Storage":"-55 ... +80 °C","Of The Terminal":"IP00","at AC-1 maximum":"1 000 1/h","lifecycle_stage":"current","During Operation":"-25 ... +60 °C","Fastening Method":"screw and snap-on mounting onto 35 mm and 75 mm standard mounting rail","Full-Scale Value":"1.1","Size Of Contactor":"S3","Solid Or Stranded":"2x (2.5 ... 16 mm²)","Product Brand Name":"SIRIUS","Degree Of Pollution":"3","Product Designation":"power contactor","at 24 V rated value":"10 A","at 60 V rated value":"2 A","Of Contactor Typical":"10 000 000","at 110 V rated value":"1 A","at 220 V rated value":"0.3 A","at 230 V rated value":"6 A","at 400 V rated value":"3 A","Side-By-Side Mounting":"Yes","For Main Current Circuit":"screw-type terminals","Substance Prohibitance (Date)":"05/01/2012","at 40 °C minimum permissible":"50 mm²","at 60 °C minimum permissible":"35 mm²","Insulation Voltage Rated Value":"1 000 V","at 230 V at 60 °C rated value":"53 kW","at AWG cables for main contacts":"2x (10 ... 1/0)","For Auxiliary And Control Circuit":"screw-type terminals","With Type Of Assignment 2 Required":"fuse gL/gG: 160 A","closing power of magnet coil at DC":"15 W","holding power of magnet coil at DC":"15 W","Surge Voltage Resistance Rated Value":"6 kV","With Type Of Coordination 1 Required":"fuse gL/gG: 250 A","at AWG cables for auxiliary contacts":"2x (20 ... 16), 2x (18 ... 14), 1x 12","operational current at AC-12 maximum":"10 A","number of NC contacts for main contacts":"0","number of NO contacts for main contacts":"4","reference code according to IEC 81346-2":"Q","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":"4","Contact Reliability Of Auxiliary Contacts":"1 faulty switching per 100 million (17 V, 1 mA)","Thermal Short-Time Current Limited To 10 S":"600 A","Finely Stranded Without Core End Processing":"2x (10 ... 35 mm²)","Type Of Voltage Of The Control Supply Voltage":"DC","Required Spacing For Grounded Parts At The Side":"6 mm","contact rating of auxiliary contacts according to UL":"A600 / Q600","Installation Altitude At Height Above Sea Level Maximum":"2 000 m","Of The Contactor With Added Auxiliary Switch Block Typical":"10 000 000","For Short-Circuit Protection Of The Auxiliary Switch Required":"fuse gL/gG: 10 A","number of NC contacts for auxiliary contacts instantaneous contact":"0","number of NO contacts for auxiliary contacts instantaneous contact":"0","Of The Contactor With Added Electronically Optimized Auxiliary Switch Block Typical":"5 000 000"}},"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=39983&mlfb=3RT1346-1BD40","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1346-1BD40/alternatives.json"},"ai":{"faq":[{"question":"How do I get current pricing and availability for 3RT1346-1BD40?","answer":"Submit an RFQ through this listing; the part is sourced to order via independent distribution, and availability plus current pricing are confirmed at quote time."},{"question":"What is the depth of 3RT1346-1BD40?","answer":"The depth is 152 mm."},{"question":"What solid wire sizes does 3RT1346-1BD40 accept?","answer":"Solid wire: 2x (0.5–1.5 mm²), 2x (0.75–2.5 mm²), max 2x (0.75–4 mm²)."},{"question":"Will 3RT1346-1BD40 drop into a panel specified for 3RT1044-1FB46 without rewiring?","answer":"The 3RT1346-1BD40 is an S3 frame size; the 3RT1044-1FB46 is a different frame. Panel cutouts and terminal layouts differ — rewiring is expected. Verify the mounting footprint and terminal arrangement against your existing panel layout before ordering."},{"question":"What compliance documentation does Siemens provide for 3RT1346-1BD40?","answer":"RoHS compliance is documented with a substance prohibitance date of 05/01/2012. The product carries IP20 and IP00 ratings per the enclosure standard."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1346-1BD40","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/3RT1346-1BD40 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}}