{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT2327-2BM40","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT2327-2BM40","canonicalUrl":"https://aoctrl.com/siemens/3RT2327-2BM40","factsUrl":"https://aoctrl.com/api/mcp/products/3RT2327-2BM40","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS contactor, size S0, 3RT2327-2BM40, DC coil, spring-type terminals, 10 A at 24 V DC.","salesMarkdown":"The Siemens 3RT2327-2BM40 is a SIRIUS contactor in size S0, designed for DC coil operation with spring-type terminals. The DC coil means this contactor is suited for applications where the control voltage is DC, common in battery-backed systems or PLC-driven outputs. The spring-type terminals on the magnet coil reduce wiring time and eliminate the risk of screw-terminal loosening under vibration. The main contact current ratings are given per voltage for DC switching: 10 A at 24 V, 6 A at 60 V, 3 A at 400 V, and 1 A at 690 V. These are the DC-1 or DC-3 type loads; the 10 A at 24 V rating is the one that governs most control-circuit applications, while the 3 A at 400 V matters for small DC motor or brake loads in a 400 VDC bus. The contactor carries an auxiliary switch, which is critical for feedback to a PLC or for interlocking in a reversing starter. The contactor measures 60 mm wide, 102 mm high, and 107 mm deep. ## Wiring and terminal capacity The spring-type terminals accept solid conductors from 2x (0.5 to 2.5 mm²) and stranded conductors from 1 to 10 mm². This range covers most control wiring up to 10 mm² for power circuits, and the dual solid termination allows daisy-chaining of control wires without a separate terminal block.","metaTitle":"Siemens 3RT2327-2BM40 SIRIUS Contactor, S0 Size, DC Coil","metaDescription":"Siemens 3RT2327-2BM40 SIRIUS contactor, size S0, DC coil, spring-type terminals, 10 A at 24 V DC. Active production. Sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Contactors"],"specifications":{"Depth":"107 mm","Solid":"2x (0.5 ... 2.5 mm²)","Width":"60 mm","at DC":"15 ... 18 ms","Height":"102 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":"220 V","Initial Value":"0.8","During Storage":"-55 ... +80 °C","Of Magnet Coil":"Spring-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":"18 ... 8","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":"S0","Solid Or Stranded":"2x (0.5 ... 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":"spring-loaded terminals","Relative Humidity Minimum":"10 %","Of Main Circuit Rated Value":"6 kV","at AC in hot operating state":"12 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":"spring-loaded 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":"Spring-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":"3 W","for AWG cables for auxiliary contacts":"2x (20 ... 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)","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":"2x (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":"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=102051&mlfb=3RT2327-2BM40","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT2327-2BM40/alternatives.json"},"ai":{"faq":[{"question":"What are the key DC switching ratings for this contactor?","answer":"The main contacts are rated 10 A at 24 V DC, 6 A at 60 V DC, 3 A at 400 V DC, and 1 A at 690 V DC. These ratings define the maximum continuous and switching current at those voltages."},{"question":"What is the mounting method and required clearances?","answer":"It mounts via screw and snap-on onto a 35 mm DIN rail per DIN EN 60715. Clearances required: 10 mm upwards, forwards, and downwards; 6 mm at the sides."},{"question":"What wire sizes does the spring terminal accept?","answer":"The spring-type terminals accept solid conductors 2x (0.5 to 2.5 mm²) and stranded conductors 1 to 10 mm²."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT2327-2BM40","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/3RT2327-2BM40 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}}