{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1374-6AE36","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1374-6AE36","canonicalUrl":"https://aoctrl.com/siemens/3RT1374-6AE36","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1374-6AE36","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RT1374-6AE36 contactor, size S12, 20-60 V AC 50/60 Hz coil, 3-pole main contacts, 2 NO + 2 NC auxiliary contacts, screw-type terminals, screw fixing.","salesMarkdown":"It is a current-production part, so it remains a standard BOM line item rather than an obsolescence watch. The coil is rated for 20-60 V AC at both 50 Hz and 60 Hz, drawing 8.5 VA apparent power at either frequency. That means the control transformer or PLC output driving it must be sized for that inrush, not just the holding VA — a common oversight when swapping from a DC coil contactor. Main contact ratings span the standard utilization categories: 4 A at 230 V, 3 A at 400 V, 2 A at 690 V. The auxiliary contact block is built in — 2 NO + 2 NC instantaneous contacts — so no separate add-on module is needed for basic status feedback or interlocking. Mounting is by screw fixing to a vertical surface, with the option to rotate the contactor ±180° or tilt it ±30° forward or backward. That flexibility helps when the contactor must sit in a tight corner of the enclosure and the coil terminals need to face the gland plate. Dimensions: 184 mm width × 225 mm height × 180 mm depth. Clearances: 10 mm above and below, 20 mm in front, 10 mm at the sides. That covers the typical control wiring range for a contactor this size — no need for ferrule adapters unless your panel standard mandates them. The lifecycle stage is current; Siemens still manufactures this order code. No announced phase-out or last-time-buy date. ## Environmental and operating range The contactor operates across -40 °C to +60 °C ambient, with storage range extending to +70 °C.","metaTitle":"Siemens 3RT1374-6AE36 SIRIUS Contactor, S12, 20-60 V AC Coil","metaDescription":"Siemens SIRIUS 3RT1374-6AE36 contactor, size S12, 20-60 V AC coil, 2 NO + 2 NC contacts, screw terminals, current production. Sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Contactors"],"specifications":{"Depth":"180 mm","Solid":"1x (1 ... 4mm²), 2x (1 ... 4mm²)","Width":"184 mm","at AC":"45 ... 80 ms","at DC":"45 ... 80 ms","Height":"225 mm","Upwards":"10 mm","Forwards":"20 mm","at 50 Hz":"8.5 VA","at 60 Hz":"8.5 VA","Downwards":"10 mm","Attachable":"2","At The Side":"10 mm","Rated Value":"20 ... 60 V","Initial Value":"0.8","During Storage":"-40 ... +70 °C","Of Magnet Coil":"Screw-type terminals","Type Of Voltage":"AC","lifecycle_stage":"current","Auxiliary Switch":"Yes","During Operation":"-40 ... +60 °C","Fastening Method":"screw fixing","Full-Scale Value":"1.1","Mounting Position":"For vertical mounting surface can be rotated +/-180°, and with 0° rotation can be tilted forward or backward +/- 30°, or standing","Size Of Contactor":"S12","Solid Or Stranded":"1x (1 ... 4mm²), 2x (1 ... 4mm²)","Product Brand Name":"SIRIUS","Product Designation":"Contactor","at 24 V rated value":"3 A","at 48 V rated value":"1.5 A","at 110 V rated value":"0.55 A","at 125 V rated value":"0.55 A","at 220 V rated value":"0.3 A","at 230 V rated value":"4 A","at 400 V rated value":"3 A","at 50 Hz rated value":"24 ... 60 V","at 500 V rated value":"2 A","at 60 Hz rated value":"24 ... 60 V","at 690 V rated value":"2 A","Instantaneous Contact":"2","Side-By-Side Mounting":"Yes","For Auxiliary Contacts":"18 ... 14","For Main Current Circuit":"Connection bar, broadened > 450A required","Relative Humidity Minimum":"10 %","Of Main Circuit Rated Value":"8 kV","at AC in hot operating state":"200 W","at AC-3 at 400 V rated value":"160 kW","Substance Prohibitance (Date)":"03/27/2017","Of Auxiliary Circuit Rated Value":"6 kV","For Auxiliary And Control Circuit":"screw-type terminals","Function Module For Communication":"No","Product Function Bus Communication":"No","With Type Of Assignment 2 Required":"gG: 630 A (500 V, 100 kA)","Without Load Current Share Typical":"3.5 W","closing power of magnet coil at DC":"400 W","holding power of magnet coil at DC":"3.5 W","At Contactor For Auxiliary Contacts":"Screw-type terminals","at AC in hot operating state per pole":"50 W","for AWG cables for auxiliary contacts":"1x (AWG 18 ... 14), 2x (AWG 18 ... 14)","number of NO contacts for main contacts":"4","reference code according to IEC 81346-2":"Q","Finely Stranded With Core End Processing":"1x (0.75 ... 2.5 mm²), 2x (0.75 ... 2.5 mm²)","Number Of Poles For Main Current Circuit":"4","Product Function Short Circuit Protection":"No","mirror contact according to IEC 60947-4-1":"Yes","number of NC contacts for auxiliary contacts":"2","number of NO contacts for auxiliary contacts":"2","Type Of Voltage Of The Control Supply Voltage":"AC/DC","contact rating of auxiliary contacts according to UL":"A600 / Q300","Of Main Circuit With Degree Of Pollution 3 Rated Value":"1 000 V","Installation Altitude At Height Above Sea Level Maximum":"2 000 m","For Short-Circuit Protection Of The Auxiliary Switch Required":"gG: 10 A (690 V, 1 kA)","minimum cross-section in main circuit at maximum AC-1 rated value":"300 mm²","Of The Auxiliary And Control Circuit With Degree Of Pollution 3 Rated Value":"690 V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/133004a8cb013dcdb1fdec11c148017b.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=1043718&mlfb=3RT1374-6AE36","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1374-6AE36/alternatives.json"},"ai":{"faq":[{"question":"What is the physical size and mounting requirement?","answer":"Dimensions are 184 mm wide × 225 mm high × 180 mm deep. Mount by screw fixing to a vertical surface. Allow 10 mm clearance above, below, and at sides; 20 mm in front."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1374-6AE36","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/3RT1374-6AE36 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}}