{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1355-6AR36","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1355-6AR36","canonicalUrl":"https://aoctrl.com/siemens/3RT1355-6AR36","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1355-6AR36","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RT1355-6AR36, size S6 contactor, AC coil 250-500 V, 2 NO instantaneous auxiliary contacts, screw-type terminals.","salesMarkdown":"It carries an AC coil rated 250-500 V, drawing 16 VA at both 50 and 60 Hz. The contactor includes two instantaneous normally-open auxiliary contacts, with ratings from 3 A at 24 V up to 4 A at 230 V and 2 A at 690 V. The AC coil accepts 250-500 V, covering common 277 V and 400-480 V control circuits without a separate transformer. Pickup voltage is 80% of rated value, dropout is 110% — meaning the coil pulls in reliably at 200 V on a 250 V tap and drops out cleanly at 550 V on a 500 V tap, avoiding chatter on a sagging line. The two NO auxiliary contacts are rated across a wide voltage range: 3 A at 24 V, 1.5 A at 48 V, 0.55 A at 110-125 V, 0.3 A at 220 V, 4 A at 230 V, 3 A at 400 V, and 2 A at 500-690 V. That covers PLC inputs, relay coils, and indicator lamps at whatever control voltage the panel uses. That suits unheated enclosures in cold climates and warm cabinets near process equipment. Mounts via screw fixing on a vertical surface, with ±180° rotation and ±30° tilt forward/backward at 0° rotation. That gives flexibility for tight enclosures where the contactor must sit at an angle to clear other gear. Dimensions are 150 mm height, 120 mm width, 128 mm depth. ## Peer Comparison Compared to the 3RT1055-6AU36, the 3RT1355-6AR36 is a size S6 contactor with a higher coil voltage range (250-500 V AC vs the smaller frame's typical 24-240 V range). The 3RT1355-6AR36 also carries two NO auxiliary contacts as standard, where the 3RT1055-6AU36 may require a separate auxiliary block. If your panel runs on 400-480 V control power, the 3RT1355-6AR36 eliminates a step-down transformer.","metaTitle":"Siemens 3RT1355-6AR36 SIRIUS S6 Contactor, 250-500V AC Coil","metaDescription":"Siemens 3RT1355-6AR36 SIRIUS contactor, size S6, 250-500V AC coil, 2 NO auxiliary contacts. Active production. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Contactors"],"specifications":{"Depth":"128 mm","Solid":"1x (1 ... 4mm²), 2x (1 ... 4mm²)","Width":"120 mm","at AC":"40 ... 70 ms","at DC":"40 ... 70 ms","Height":"150 mm","Upwards":"10 mm","Forwards":"20 mm","at 50 Hz":"16 VA","at 60 Hz":"16 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":"S6","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","Relative Humidity Minimum":"10 %","Of Main Circuit Rated Value":"8 kV","at AC in hot operating state":"54 W","at AC-3 at 400 V rated value":"75 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: 250 A (500 V, 100 kA)","Without Load Current Share Typical":"4 W","closing power of magnet coil at DC":"205 W","holding power of magnet coil at DC":"4 W","At Contactor For Auxiliary Contacts":"Screw-type terminals","at AWG cables for auxiliary contacts":"1x (AWG 18 ... 14), 2x (AWG 18 ... 14)","at AC in hot operating state per pole":"18 W","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":"95 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/d7be02e1c0c1771ab67bb9274219461c.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=1043705&mlfb=3RT1355-6AR36","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1355-6AR36/alternatives.json"},"ai":{"faq":[{"question":"What is the coil voltage and type for the 3RT1355-6AR36?","answer":"The coil is AC only, rated 250-500 V, drawing 16 VA at both 50 and 60 Hz. Pickup is at 80% of rated voltage, dropout at 110%."},{"question":"What auxiliary contacts does the 3RT1355-6AR36 have?","answer":"It has two normally-open (NO) instantaneous auxiliary contacts, rated from 3 A at 24 V up to 4 A at 230 V and 2 A at 690 V, covering most control circuit voltages."},{"question":"What are the mounting dimensions and clearances for the 3RT1355-6AR36?","answer":"Dimensions are 150 mm H x 120 mm W x 128 mm D. Mounting requires 10 mm clearance above and below, 20 mm forward, and 10 mm at the sides. Screw fixing on a vertical surface with ±180° rotation and ±30° tilt allowed."},{"question":"What conductor sizes does the 3RT1355-6AR36 accept?","answer":"The screw-type coil terminals accept 1x or 2x conductors from 1 to 4 mm², solid or stranded."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1355-6AR36","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/3RT1355-6AR36 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}}