{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT2337-1NB30","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT2337-1NB30","canonicalUrl":"https://aoctrl.com/siemens/3RT2337-1NB30","factsUrl":"https://aoctrl.com/api/mcp/products/3RT2337-1NB30","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS contactor, size S2, order code 3RT2337-1NB30, coil 20–33 V AC/DC, screw-type terminals, 2 VA holding power, 130 mm depth.","salesMarkdown":"The coil accepts 20–33 V AC or DC, drawing 2 VA at 50 or 60 Hz, with an inrush peak of 3 A. Screw-type terminals on the coil and main contacts handle solid or stranded wire: 2x (0.5–1.5 mm²) and 2x (0.75–2.5 mm²). The 20–33 V coil span covers nominal 24 V systems with margin for brownout (dropout below ~18 V). AC/DC coil type means one part works across control circuits — no need to specify a rectifier or separate DC-rated variant. ## Switching capacity — DC loads need attention The main contacts carry AC-3 motor currents typical for the S2 frame, but the ledger gives specific DC switching capacities that matter for DC control or auxiliary circuits: at 24 V rated value it switches 10 A, at 48 V drops to 2 A, at 60 V recovers to 6 A, then falls to 1 A at 110 V, 0.9 A at 125 V, 0.3 A at 220 V, and 10 A at 230 V (likely AC-1 resistive). If you are switching a DC solenoid or brake, verify the voltage and current against these values — the contactor is not a universal DC switch. These are the air and creepage distances for the S2 frame — respect them for thermal dissipation and arc flash containment. Up to 2 auxiliary switch blocks can be attached (the contactor comes with one auxiliary switch fitted). No phase-out or last-time-buy notice is on record.","metaTitle":"Siemens 3RT2337-1NB30 SIRIUS Contactor, 20-33 V AC/DC Coil,","metaDescription":"Siemens 3RT2337-1NB30 SIRIUS contactor, S2 size, coil 20-33 V AC/DC, 2 VA, screw terminals, DIN rail mount. Current production. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Contactors"],"specifications":{"Depth":"130 mm","Solid":"2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²)","Width":"75 mm","at AC":"30 ... 55 ms","at DC":"30 ... 55 ms","Height":"114 mm","Upwards":"10 mm","Forwards":"10 mm","at 50 Hz":"2 VA","at 60 Hz":"2 VA","Downwards":"10 mm","Attachable":"2","Arcing Time":"10 ... 20 ms","At The Side":"6 mm","Rated Value":"20 ... 33 V","Initial Value":"0.8","During Storage":"-55 ... +80 °C","Of Magnet Coil":"Screw-type terminals","Type Of Voltage":"AC/DC","lifecycle_stage":"current","Auxiliary Switch":"Yes","During Operation":"-40 ... +70 °C","Fastening Method":"screw and snap-on mounting onto 35 mm DIN rail according to DIN EN 60715","Full-Scale Value":"1.1","For Main Contacts":"18 ... 1","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)","Product Brand Name":"SIRIUS","Inrush Current Peak":"3 A","Product Designation":"Contactor","at 24 V rated value":"10 A","at 48 V rated value":"2 A","at 60 V rated value":"6 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":"10 A","at 400 V rated value":"3 A","at 50 Hz rated value":"20 ... 33 V","at 500 V rated value":"2 A","at 60 Hz rated value":"20 ... 33 V","at 600 V rated value":"0.1 A","at 690 V rated value":"1 A","Instantaneous Contact":"1","Side-By-Side Mounting":"Yes","For Auxiliary Contacts":"20 ... 14","For Main Current Circuit":"screw-type terminals","Locked-Rotor Current Peak":"2.6 A","Relative Humidity Minimum":"10 %","Holding Current Mean Value":"40 mA","Of Main Circuit Rated Value":"6 kV","at AC in hot operating state":"38.8 W","Substance Prohibitance (Date)":"10/01/2014","Design Of The Surge Suppressor":"with varistor","Duration Of Inrush Current Peak":"50 µs","Locked-Rotor Current Mean Value":"1 A","Duration Of Locked-Rotor Current":"230 ms","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":"gR: 80 A (690 V, 100 kA)","Without Load Current Share Typical":"1 W","closing power of magnet coil at DC":"23 W","holding power of magnet coil at DC":"1 W","At Contactor For Auxiliary Contacts":"Screw-type terminals","operating frequency at AC-1 maximum":"700 1/h","With Type Of Coordination 1 Required":"gG: 160 A (690 V, 100 kA)","at AWG cables for auxiliary contacts":"2x (20 ... 16), 2x (18 ... 14)","operational current at AC-12 maximum":"10 A","at AC in hot operating state per pole":"9.7 W","number of NO contacts for main contacts":"4","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":"4","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","Finely Stranded Without Core End Processing":"0.5 ... 2.5 mm²","number of NC contacts for auxiliary contacts":"1","number of NO contacts for auxiliary contacts":"1","Type Of Voltage Of The Control Supply Voltage":"AC/DC","Limited To 1 S Switching At Zero Current Maximum":"Use minimum cross-section acc. to AC-1 rated value","Limited To 5 S Switching At Zero Current Maximum":"Use minimum cross-section acc. to AC-1 rated value","Limited To 10 S Switching At Zero Current Maximum":"Use minimum cross-section acc. to AC-1 rated value","Limited To 30 S Switching At Zero Current Maximum":"Use minimum cross-section acc. to AC-1 rated value","Limited To 60 S Switching At Zero Current Maximum":"Use minimum cross-section acc. to AC-1 rated value","contact rating of auxiliary contacts according to UL":"A600 / P600","Of Main Circuit With Degree Of Pollution 3 Rated Value":"690 V","Installation Altitude At Height Above Sea Level Maximum":"2 000 m","Of The Contactor With Added Auxiliary Switch Block Typical":"10 000 000","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":"35 mm²","Of The Auxiliary And Control Circuit With Degree Of Pollution 3 Rated Value":"690 V","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,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/ca192699cf31b1a6b3427c82809b93b4.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=224824&mlfb=3RT2337-1NB30","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT2337-1NB30/alternatives.json"},"ai":{"faq":[{"question":"What wire sizes does the 3RT2337-1NB30 accept?","answer":"Solid or stranded: 2x (0.5–1.5 mm²) and 2x (0.75–2.5 mm²) per terminal."},{"question":"What are the mounting clearances for 3RT2337-1NB30?","answer":"Minimum clearances: 10 mm upwards, forwards, and downwards; 6 mm at the side. Mounting position allows +/-180° rotation on vertical surfaces and +/-22.5° tilt."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT2337-1NB30","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/3RT2337-1NB30 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}}