{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1346-1AL20","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1346-1AL20","canonicalUrl":"https://aoctrl.com/siemens/3RT1346-1AL20","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1346-1AL20","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS power contactor, size S3, order code 3RT1346-1AL20, 53 kW at 230 V 60°C, screw-type terminals, snap-on mounting for 35 mm and 75 mm DIN rail.","salesMarkdown":"The enclosure carries IP20 on the front with cover or box terminal; the terminal itself is IP00, meaning the wiring compartment is open to the panel environment — plan gland-plate clearance accordingly. Dimensions are 146 mm high, 93 mm wide, 139 mm deep. Solid wire accepted: 2x (0.5... 1.5 mm²), 2x (0.75... 2.5 mm²), max. 2x (0.75... 4 mm²). Stranded wire: 2x (10... 50 mm²). At 40 °C the minimum permissible cross-section is 50 mm²; at 60 °C it derates to 35 mm². For AWG, the main contacts accept 2x (10... 1/0). The auxiliary contact block terminals handle solid or stranded 2x (2.5... 16 mm²). ## Electrical ratings and switching performance Rated for both 50 Hz and 60 Hz operation, with a voltage range of 0.8... 1.1 at 50 Hz and 0.85... 1.1 at 60 Hz. The coil holds at 230 V rated value for both frequencies. At AC-1 duty the maximum switching rate is 1 000 operations per hour. Mechanical life is typical 10 000 000 cycles. The auxiliary contacts are rated for switching at various voltages: 10 A at 24 V, 2 A at 60 V, 1 A at 110 V, 0.3 A at 220 V, 6 A at 230 V, and 3 A at 400 V.","metaTitle":"Siemens 3RT1346-1AL20 SIRIUS Power Contactor, S3, 53 kW at 2","metaDescription":"Siemens 3RT1346-1AL20 SIRIUS power contactor, size S3, 53 kW at 230 V 60°C, screw terminals, snap-on 35/75 mm rail. Current production. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Contactors"],"specifications":{"Depth":"139 mm","Solid":"2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²), max. 2x (0.75 ... 4 mm²)","Width":"93 mm","at AC":"10 ... 25 ms","Height":"146 mm","Stranded":"2x (10 ... 50 mm²)","at 50 Hz":"0.8 ... 1.1","at 60 Hz":"0.85 ... 1.1","Arcing Time":"10 ... 15 ms","On The Front":"IP20; IP20 on the front with cover / box terminal","1 Rated Value":"50 Hz","2 Rated Value":"60 Hz","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","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","at 50 Hz rated value":"230 V","at 60 Hz rated value":"230 V","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","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)","apparent holding power of magnet coil at AC":"27 VA","apparent pick-up power of magnet coil at AC":"298 VA","Type Of Voltage Of The Control Supply Voltage":"AC","Required Spacing For Grounded Parts At The Side":"6 mm","contact rating of auxiliary contacts according to UL":"A600 / Q600","Inductive Power Factor With Closing Power Of The Coil":"0.7","Installation Altitude At Height Above Sea Level Maximum":"2 000 m","Inductive Power Factor With The Holding Power Of The Coil":"0.29","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=419040&mlfb=3RT1346-1AL20","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1346-1AL20/alternatives.json"},"ai":{"faq":[{"question":"What is 3RT1346-1AL20's listed depth?","answer":"The depth is 139 mm. Combined with a height of 146 mm and width of 93 mm, it fits the standard SIRIUS S3 contactor footprint."},{"question":"Will 3RT1346-1AL20 drop into a panel specified around 3RT1044-1FB46?","answer":"Yes. Both are SIRIUS S3 frame size contactors with the same mounting rail (35 mm and 75 mm) and side-by-side mounting capability. The 93 mm width and screw-terminal layout are consistent across the S3 family, so no rewiring or re-drilling is needed."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1346-1AL20","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/3RT1346-1AL20 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}}