{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RA2336-8XB30-1KB4","brand":"Siemens","brandSlug":"siemens","productSlug":"3RA2336-8XB30-1KB4","canonicalUrl":"https://aoctrl.com/siemens/3RA2336-8XB30-1KB4","factsUrl":"https://aoctrl.com/api/mcp/products/3RA2336-8XB30-1KB4","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS reversing contactor assembly, S2 size, 22 kW at 400 V AC-3, 52 A at 480 V, screw terminals, varistor surge suppression, supplied with two 3RT2036-1KB40 contactors and RS kit 3RA2933-2AA1.","salesMarkdown":"## Supplied as a complete reversing assembly The 3RA2336-8XB30-1KB4 is a Siemens SIRIUS reversing contactor assembly — a factory-built pair of contactors with mechanical interlock, shipped as one orderable unit. It includes two 3RT2036-1KB40 contactors and the 3RA2933-2AA1 reversing assembly kit, so you do not need to source and assemble the interlock hardware separately. ## Motor power and current ratings across common voltages At 480 V the assembly carries 52 A, and at 600 V it also carries 52 A. The AC-4 rating at 400 V is also 22 kW, covering reversing and inching duty where the contactor opens under stalled-rotor current. ## Mounting flexibility and panel footprint The S2-size contactor assembly measures 141 mm high by 120 mm wide by 130 mm deep. It mounts on 35 mm standard DIN rail via screw and snap-on fastening. Clearance requirements: 10 mm upwards, forwards, downwards, and to the side; zero clearance needed backwards. ## Terminal capacity and wire ranges The wide wire range on the main terminals covers both panel-building with standard cable and retrofit work where existing conductors are larger. ## Environmental limits and surge suppression Operates from -25 to +60 °C, stores from -55 to +80 °C. The built-in surge suppressor uses a varistor — no separate suppressor module to order or mount. Vibration resistance is 12g at 5 ms and 7g at 10 ms DC, adequate for machine-mounted panels near presses or conveyors. The coil is rated 24 V DC.","metaTitle":"Siemens 3RA2336-8XB30-1KB4 SIRIUS Reversing Contactor","metaDescription":"Siemens SIRIUS reversing contactor assembly 3RA2336-8XB30-1KB4, S2 size, 22 kW at 400 V AC-3, 52 A at 480 V. Active production, quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Motor Starters"],"specifications":{"Depth":"130 mm","Solid":"2x (1 ... 35 mm²), 1x (1 ... 50 mm²)","Width":"120 mm","at DC":"12g / 5 ms, 7g / 10 ms","title":"3RA2336-8XB30-1KB4","Height":"141 mm","Upwards":"10 mm","Forwards":"10 mm","Backwards":"0 mm","Downwards":"10 mm","At The Side":"10 mm","description":"reversing contactor assembly, AC-3e/AC-3, 51 A, 22 kW / 400 V, 3-pole, 24 V DC, 0.7-1.25* Us, with varistor plugged on, screw terminal, electrical and mechanical interlock, auxiliary contacts: 2 x 1 NO","During Storage":"-55 ... +80 °C","Of Magnet Coil":"Screw-type terminals","lifecycle_stage":"current","During Operation":"-25 ... +60 °C","Fastening Method":"screw and snap-on mounting onto 35 mm standard mounting rail","Mounting Position":"+/-180° rotation possible on vertical mounting surface; can be tilted forward and backward by +/- 22.5° on vertical mounting surface","Size Of Contactor":"S2","Solid Or Stranded":"2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²)","at DC rated value":"24 V","Product Brand Name":"SIRIUS","Product Designation":"Reversing contactor assembly","Of Contactor Typical":"10 000 000","at 400 V rated value":"22 kW","at 480 V rated value":"52 A","at 500 V rated value":"30 kW","at 600 V rated value":"52 A","at 690 V rated value":"22 kW","Instantaneous Contact":"2","For Main Current Circuit":"screw-type terminals","at 220/230 V rated value":"15 hp","at 460/480 V rated value":"40 hp","at 575/600 V rated value":"50 hp","Per Direction Of Rotation":"1","1 Of The Supplied Contactor":"3RT2036-1KB40","2 Of The Supplied Contactor":"3RT2036-1KB40","at AC-4 at 400 V rated value":"22 kW","Substance Prohibitance (Date)":"10/01/2014","Design Of The Surge Suppressor":"with varistor","at AWG cables for main contacts":"2x (18 ... 2), 1x (18 ... 1)","of the supplied RS assembly kit":"3RA2933-2AA1","For Auxiliary And Control Circuit":"screw-type terminals","Product Extension Auxiliary Switch":"Yes","Product Function Bus Communication":"Yes","With Type Of Assignment 2 Required":"gG NH 3NA, DIAZED 5SB, NEOZED 5SE: 80 A","closing power of magnet coil at DC":"21.5 W","holding power of magnet coil at DC":"1 W","At Contactor For Auxiliary Contacts":"Screw-type terminals","operating frequency at AC-3 maximum":"800 1/h","With Type Of Coordination 1 Required":"gG NH 3NA, DIAZED 5SB, NEOZED 5SE: 160 A","at AWG cables for auxiliary contacts":"2x (20 ... 16), 2x (18 ... 14)","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","Contact Reliability Of Auxiliary Contacts":"< 1 error per 100 million operating cycles","with low demand rate according to SN 31920":"40 %","protocol is supported AS-Interface protocol":"No","with high demand rate according to SN 31920":"73 %","Type Of Voltage Of The Control Supply Voltage":"DC","operating voltage at AC-3 rated value maximum":"690 V","contact rating of auxiliary contacts according to UL":"A600 / Q600","Installation Altitude At Height Above Sea Level Maximum":"2 000 m","product function control circuit interface with IO link":"No","Of The Contactor With Added Auxiliary Switch Block Typical":"10 000 000","For Short-Circuit Protection Of The Auxiliary Switch Required":"fuse gG: 10 A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/b2d9816bdab5e780c20335fd1fcc5bc7.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=689247&mlfb=3RA2336-8XB30-1KB4"},"ai":{"faq":[{"question":"What wire sizes does the 3RA2336-8XB30-1KB4 accept on the main terminals?","answer":"The screw-type main terminals accept 2x (1...35 mm²) solid or 1x (1...50 mm²) solid, plus 2x (18...2 AWG) or 1x (18...1 AWG)."},{"question":"What is the clearance needed around this reversing contactor assembly?","answer":"The 3RA2336-8XB30-1KB4 requires 10 mm clearance upwards, forwards, downwards, and to the side. Zero clearance is needed backwards. This allows tight panel layouts while maintaining airflow and access."},{"question":"Does the 3RA2336-8XB30-1KB4 include surge suppression?","answer":"Yes, the assembly includes a built-in varistor-type surge suppressor — no separate suppressor module needs to be ordered or mounted externally."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RA2336-8XB30-1KB4","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/3RA2336-8XB30-1KB4 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-22T19:47:38.189Z","lastPublished":"2026-07-22T19:47:38.189Z","indexable":true}}