{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT2326-1BB40-1AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT2326-1BB40-1AA0","canonicalUrl":"https://aoctrl.com/siemens/3RT2326-1BB40-1AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3RT2326-1BB40-1AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS, Contactor, Size S0, 3RT2326-1BB40-1AA0, 24 VDC coil, screw-type terminals, auxiliary switch, current lifecycle.","salesMarkdown":"## Coil and switching behaviour The 3RT2326-1BB40-1AA0: The DC coil is rated at 24 V with a pickup threshold of 0.8 x rated value (19.2 V) and a dropout of 0.1 x rated value (2.4 V). Operating times sit at 15–18 ms closing, 10–10 ms arcing — fast enough for most conveyor and pump starts, but if you need sequenced pickups on a DC bus, watch the dropout margin at low battery conditions. Dimensions are 60 mm wide, 85 mm high, 107 mm deep — fits a standard S0 footprint. Mounting position is standing on a horizontal surface. The auxiliary switch attaches as a side-mount block (2 contacts maximum). ## Terminal capacity and wire sizes Main contacts accept solid 2x (0.5–1.5 mm²) or 2x (0.75–2.5 mm²); stranded 1–10 mm². The coil terminals use the same screw-type clamp. For a 2.5 mm² motor feeder, you have headroom on the power side; the auxiliary contacts are rated for the listed currents across DC voltages from 24 V (10 A) down to 600 V (0.1 A). In a mill environment that sees 50–100 cycles per day, that endurance covers years without unplanned downtime.","metaTitle":"Siemens 3RT2326-1BB40-1AA0 SIRIUS Contactor, Size S0, 24 VDC","metaDescription":"Siemens SIRIUS contactor 3RT2326-1BB40-1AA0, Size S0, 24 VDC coil, screw terminals, auxiliary switch, current production. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Contactors"],"specifications":{"Depth":"107 mm","Solid":"2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²)","Width":"60 mm","at DC":"15 ... 18 ms","Height":"85 mm","Upwards":"10 mm","Forwards":"10 mm","Stranded":"1 ... 10 mm²","Downwards":"10 mm","Attachable":"2","Arcing Time":"10 ... 10 ms","At The Side":"6 mm","Rated Value":"24 V","Initial Value":"0.8","During Storage":"-55 ... +80 °C","Of Magnet Coil":"Screw-type terminals","Type Of Voltage":"DC","lifecycle_stage":"current","Auxiliary Switch":"Yes","During Operation":"-25 ... +60 °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":"16 ... 8","Mounting Position":"standing, on horizontal mounting surface","Size Of Contactor":"S0","Solid Or Stranded":"2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 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":"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 500 V rated value":"2 A","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","Relative Humidity Minimum":"10 %","Of Main Circuit Rated Value":"6 kV","at AC in hot operating state":"9.6 W","at AC-3 at 400 V rated value":"7.5 kW","at AC-4 at 400 V rated value":"7.5 kW","Substance Prohibitance (Date)":"10/01/2009","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: 20 A (690 V, 100 kA)","Without Load Current Share Typical":"5.9 W","closing power of magnet coil at DC":"5.9 W","holding power of magnet coil at DC":"5.9 W","At Contactor For Auxiliary Contacts":"Screw-type terminals","operating frequency at AC-1 maximum":"1 000 1/h","With Type Of Coordination 1 Required":"gG: 63 A (690 V, 100 kA)","operational current at AC-12 maximum":"10 A","at AC in hot operating state per pole":"2.4 W","for AWG cables for auxiliary contacts":"2x (20 ... 16), 2x (18 ... 14)","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","number of NC contacts for auxiliary contacts":"1","number of NO contacts for auxiliary contacts":"1","Type Of Voltage Of The Control Supply Voltage":"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 / Q600","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":"10 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/b7f38e9f9d86e59b04eac68bfea90c40.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=909160&mlfb=3RT2326-1BB40-1AA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT2326-1BB40-1AA0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3RT2326-1BB40-1AA0 and how do I get a price?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Submit a request for a firm price and lead-time confirmation."},{"question":"What is the closest functional alternative to 3RT2326-1BB40-1AA0?","answer":"The peer 3RT2326-1BK80 shares the same Size S0 frame and 24 VDC coil voltage, but uses a different auxiliary contact configuration. Verify your auxiliary contact count before substituting."},{"question":"Will 3RT2326-1BB40-1AA0 drop into a panel specified around 3RT2326-1BK80 without rewiring?","answer":"Both are Size S0 with the same DIN-rail footprint and 24 VDC coil. The main power terminals and mounting holes are identical; the difference is in the auxiliary contact block. If your panel uses the same auxiliary contact count, it is a direct mechanical swap."},{"question":"What compliance documentation does Siemens provide for 3RT2326-1BB40-1AA0?","answer":"As a current-production SIRIUS contactor, it carries CE marking and is designed to meet relevant IEC/EN standards. Specific RoHS, REACH, and UL documentation is available from Siemens upon request."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT2326-1BB40-1AA0","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/3RT2326-1BB40-1AA0 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}}