{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1456-6NB36","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1456-6NB36","canonicalUrl":"https://aoctrl.com/siemens/3RT1456-6NB36","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1456-6NB36","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS, Contactor, 3RT1456-6NB36, size S6, coil 21-27.3 V AC/DC, power terminals 25-120 mm² stranded, screw fixing, 172 x 120 x 170 mm.","salesMarkdown":"## Siemens SIRIUS 3RT1456-6NB36 — Size S6 Contactor, AC/DC Coil The power circuit accepts stranded conductors from 25 mm² up to 120 mm², which covers the heavy end of motor and resistive loads in a panel. The coil is screw-type terminals and operates on AC or DC from 21 V to 27.3 V. Pickup and dropout timing is symmetrical — 80-90 ms on both AC and DC — so the contactor responds consistently regardless of supply type. At 24 V rated value the auxiliary contacts switch 10 A; at 48 V that drops to 2 A, and at 230 V it handles 6 A. That derating curve matters if you are sharing the auxiliary circuit with a PLC output card or a pilot light string. Fastened by screw fixing through a single 9 mm hole. The mounting position is flexible: vertical surface with +/-90° rotation or +/-22.5° tilt front-to-back. The body measures 172 mm high, 120 mm wide, 170 mm deep — a standard panel footprint for size S6. Four auxiliary contacts can be attached.","metaTitle":"Siemens 3RT1456-6NB36 SIRIUS Contactor, 21-27.3 V AC/DC Coil","metaDescription":"Siemens SIRIUS 3RT1456-6NB36 contactor, size S6. Coil 21-27.3 V AC/DC, power terminals 25-120 mm² stranded. Active lifecycle, sourced to order. Request quote.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Contactors"],"specifications":{"Depth":"170 mm","Solid":"2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²), max. 2x (0.75 ... 4 mm²)","Width":"120 mm","at AC":"80 ... 90 ms","at DC":"80 ... 90 ms","title":"3RT1456-6NB36","Height":"172 mm","Upwards":"10 mm","Forwards":"20 mm","Stranded":"25 ... 120 mm²","at 50 Hz":"0.5","at 60 Hz":"0.8 ... 1.1","Downwards":"10 mm","Attachable":"4","Arcing Time":"10 ... 15 ms","At The Side":"10 mm","Rated Value":"21 ... 27.3 V","description":"power contactor AC-1 275 A / 690 V / 40 °C 3-pole, Uc: 21-27.3 V AC(50-60 Hz) / DC PLC input 24 V DC drive: electronic auxiliary contacts 2 NO + 2 NC main circuit: busbar control and auxiliary circuit: screw terminal","Initial Value":"0.8","During Storage":"-55 ... +80 °C","Of Magnet Coil":"Screw-type terminals","Number Of Holes":"1","Type Of Voltage":"AC/DC","lifecycle_stage":"current","Auxiliary Switch":"Yes","During Operation":"-25 ... +55 °C","Fastening Method":"screw fixing","Full-Scale Value":"1.1","Diameter Of Holes":"9 mm","Mounting Position":"with vertical mounting surface +/-90° rotatable, with vertical mounting surface +/- 22.5° tiltable to the front and back","Size Of Contactor":"S6","Solid Or Stranded":"2x (0,5 ... 1,5 mm²), 2x (0,75 ... 2,5 mm²), max. 2x (0,75 ... 4 mm²)","Product Brand Name":"SIRIUS","Product Designation":"Contactor","at 24 V rated value":"10 A","at 48 V rated value":"2 A","at 60 V rated value":"2 A","Of Contactor Typical":"10 000 000","at 110 V rated value":"1 A","at 125 V rated value":"0.9 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":"21 ... 27.3 V","at 500 V rated value":"2 A","at 60 Hz rated value":"21 ... 27.3 V","at 600 V rated value":"0.1 A","at 690 V rated value":"1 A","Instantaneous Contact":"2","Side-By-Side Mounting":"Yes","Width Of Connection Bar":"17 mm","For Main Current Circuit":"Connection bar","Relative Humidity Minimum":"10 %","Of Main Circuit Rated Value":"8 kV","Thickness Of Connection Bar":"3 mm","at AC in hot operating state":"86.4 W","Substance Prohibitance (Date)":"05/01/2012","Design Of The Surge Suppressor":"with varistor","Of Auxiliary Circuit Rated Value":"6 kV","For Auxiliary And Control Circuit":"screw-type terminals","Function Module For Communication":"No","With Type Of Assignment 2 Required":"gR: 350 A (690 V, 100 kA)","Without Load Current Share Typical":"2.8 W","closing power of magnet coil at DC":"320 W","holding power of magnet coil at DC":"2.8 W","At Contactor For Auxiliary Contacts":"Screw-type terminals","operating frequency at AC-1 maximum":"600 1/h","With Type Of Coordination 1 Required":"gG: 355 A (690 V, 100 kA)","operational current at AC-12 maximum":"10 A","at AC in hot operating state per pole":"28.8 W","for AWG cables for auxiliary contacts":"2x (20 ... 16), 2x (18 ... 14), 1x 12","number of NC contacts for main contacts":"0","number of NO contacts for main contacts":"3","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":"3","Type Of Voltage For Main Current Circuit":"AC","Contact Reliability Of Auxiliary Contacts":"1 faulty switching per 100 million (17 V, 1 mA)","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","type of PLC-control input according to IEC 60947-1":"Type 2","Of Main Circuit With Degree Of Pollution 3 Rated Value":"1 000 V","Installation Altitude At Height Above Sea Level Maximum":"2 000 m","Of The Contactor With Added Auxiliary Switch Block Typical":"10 000 000","Of Auxiliary Circuit With Degree Of Pollution 3 Rated Value":"500 V","For Short-Circuit Protection Of The Auxiliary Switch Required":"gG: 10 A (500 V, 1 kA)","minimum cross-section in main circuit at maximum AC-1 rated value":"140 mm²","Of The Contactor With Added Electronically Optimized Auxiliary Switch Block Typical":"5 000 000","Design Of The Miniature Circuit Breaker For Short-Circuit Protection Of The Auxiliary Switch Required":"gG: 10 A (230 V, 400 A)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/3c52b402506d66a0f397fb4792fc9d4f.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=162469&mlfb=3RT1456-6NB36"},"ai":{"faq":[{"question":"What is the coil voltage for 3RT1456-6NB36?","answer":"The coil is rated 21-27.3 V and accepts both AC and DC supply. It uses screw-type terminals."},{"question":"What wire sizes does the power circuit accept?","answer":"The power terminals accept stranded conductors from 25 mm² up to 120 mm². The auxiliary/control terminals accept solid or stranded 0.5-1.5 mm² (2x), 0.75-2.5 mm² (2x), or max 0.75-4 mm² (2x)."},{"question":"Where can I buy 3RT1456-6NB36?","answer":"This part is sourced and quoted 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":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1456-6NB36","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/3RT1456-6NB36 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:51:03.652Z","lastPublished":"2026-08-11T15:51:03.652Z","indexable":true}}