{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1346-1BG40","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1346-1BG40","canonicalUrl":"https://aoctrl.com/siemens/3RT1346-1BG40","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1346-1BG40","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS, power contactor, 3RT1346-1BG40, S3 size, 53 kW at 230 V 60 °C, 3-pole, screw terminals, IP20 front, 125 V DC coil.","salesMarkdown":"It carries a rated motor power of 53 kW at 230 V at 60 °C, and an insulation voltage rated at 1,000 V. The coil is rated for 125 V DC, with a closing power of 15 W. The 53 kW rating at 230 V at 60 °C tells you the contactor can switch a motor of that power continuously at that voltage and ambient temperature. The 1,000 V insulation voltage means the contactor's internal clearances and creepage are designed for 1 kV systems, which covers 400 V and 690 V networks with margin. Both main and auxiliary/control circuits use screw-type terminals. The main circuit accepts stranded conductors from 2x (10... 50 mm²) and solid conductors from 2x (0.5... 1.5 mm²) up to max. 2x (0.75... 4 mm²). For AWG, the main contacts accept 2x (10... 1/0). The auxiliary/control circuit terminals accept 2x (0.5... 1.5 mm²) solid, 2x (0.75... 2.5 mm²) solid, and max. 2x (0.75... 4 mm²) solid. At 40 °C the minimum permissible conductor is 50 mm²; at 60 °C it derates to 35 mm². ## Environmental and protection The contactor is designed for side-by-side mounting without derating.","metaTitle":"Siemens SIRIUS 3RT1346-1BG40 Power Contactor, 53 kW at 230 V","metaDescription":"Siemens SIRIUS 3RT1346-1BG40 power contactor, S3 size, 53 kW at 230 V, 3-pole, screw terminals, IP20 front. Current production. Sourced to order against RFQ.","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":"125 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=372781&mlfb=3RT1346-1BG40","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1346-1BG40/alternatives.json"},"ai":{"faq":[{"question":"What is the motor power rating for 3RT1346-1BG40?","answer":"The contactor is rated for 53 kW at 230 V at 60 °C."},{"question":"What is the coil voltage for this contactor?","answer":"The coil is rated for 125 V DC, with a closing power of 15 W."},{"question":"What conductor sizes does the main circuit accept?","answer":"The main circuit accepts stranded conductors from 2x (10... 50 mm²) and solid conductors from 2x (0.5... 1.5 mm²) up to max. 2x (0.75... 4 mm²). For AWG, it accepts 2x (10... 1/0)."},{"question":"Where can I buy 3RT1346-1BG40 and how is it quoted?","answer":"This part is sourced 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/3RT1346-1BG40","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/3RT1346-1BG40 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}}