{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1374-6AR36","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1374-6AR36","canonicalUrl":"https://aoctrl.com/siemens/3RT1374-6AR36","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1374-6AR36","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS contactor, size S12, 3RT1374-6AR36, 225 x 184 x 180 mm, screw fixing, screw-type coil terminals, 250-500 V AC coil.","salesMarkdown":"It mounts via screw fixing on a vertical surface, with flexibility to be rotated ±180° or tilted forward/backward up to 30° at 0° rotation, or used standing. The 225 mm height, 184 mm width, and 180 mm depth define the panel space it occupies; clearance distances of 10 mm upwards, 10 mm downwards, 10 mm at the side, and 20 mm forwards are needed around it for heat dissipation and arc containment. Coil power consumption is 21 VA at either frequency. The pickup voltage ratio is 0.8 (initial value), and the dropout voltage ratio is 1.1 (full-scale value), meaning the contactor picks up at 80% of rated voltage and drops out at 110% — standard for AC coils to ensure reliable pull-in under brownout conditions. ## Main and auxiliary contacts The contactor carries 2 instantaneous auxiliary contacts and includes an auxiliary switch. Up to 2 additional auxiliary contacts can be attached. Rated operational current varies by voltage: at 24 V it is 3 A, at 48 V it is 1.5 A, at 110 V and 125 V it is 0.55 A, at 220 V it is 0.3 A, at 230 V it is 4 A, at 400 V it is 3 A, at 500 V it is 2 A, and at 690 V it is 2 A. These values reflect the switching capacity across different control and auxiliary circuits — the 230 V and 400 V ratings are the highest, typical for motor control applications. ## Environmental and wiring specs The screw terminals accept solid or stranded conductors: 1x (1 to 4 mm²) or 2x (1 to 4 mm²) per clamp, which covers standard control wiring up to 12 AWG.","metaTitle":"Siemens 3RT1374-6AR36 SIRIUS Contactor, Size S12, 250-500V A","metaDescription":"Siemens 3RT1374-6AR36 SIRIUS contactor, size S12, 225x184x180 mm. Screw-type coil terminals, 2 auxiliary contacts. Rated control supply voltage 250-500 V AC. Current lifecycle stag","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":"21 VA","at 60 Hz":"21 VA","Downwards":"10 mm","Attachable":"2","At The Side":"10 mm","Rated Value":"250 ... 500 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":"250 ... 500 V","at 500 V rated value":"2 A","at 60 Hz rated value":"250 ... 500 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":"4.7 W","closing power of magnet coil at DC":"600 W","holding power of magnet coil at DC":"4.7 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/37ed1472a494cfcf86d2e2a7a5a31d88.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=1043721&mlfb=3RT1374-6AR36","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1374-6AR36/alternatives.json"},"ai":{"faq":[{"question":"What are the key dimensions for panel layout?","answer":"The contactor measures 225 mm high, 184 mm wide, and 180 mm deep. It requires 10 mm clearance upwards, downwards, and at the sides, plus 20 mm forwards for safe operation."},{"question":"What is the coil voltage and power consumption?","answer":"The coil is rated for 250 to 500 V AC at 50/60 Hz, consuming 21 VA at either frequency. Pickup is at 80% of rated voltage; dropout at 110%."},{"question":"What conductor sizes does the screw terminal accept?","answer":"The screw-type terminals accept 1x (1 to 4 mm²) or 2x (1 to 4 mm²) solid or stranded conductors."},{"question":"What is the operating temperature range?","answer":"Operating temperature is -40 to +60 °C; storage temperature is -40 to +70 °C."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1374-6AR36","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/3RT1374-6AR36 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}}