{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT2448-6KB40-0KS0","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT2448-6KB40-0KS0","canonicalUrl":"https://aoctrl.com/siemens/3RT2448-6KB40-0KS0","factsUrl":"https://aoctrl.com/api/mcp/products/3RT2448-6KB40-0KS0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RT2448-6KB40-0KS0 contactor, Size S3, 24 VDC coil, screw-type terminals, auxiliary switch included, 70 x 140 x 152 mm (WxHxD).","salesMarkdown":"## Active production — what that means for your BOM line The 3RT2448-6KB40-0KS0: For volume procurement, the part is quoted to order against the BOM quantity through independent distribution. ## Coil and control circuit — 24 VDC with screw terminals The magnet coil is rated 24 VDC with a screw-type terminal connection. Inrush current peaks at 2.7 A, then settles to a holding current of 10 A at the rated voltage — the DC hold is higher than the AC equivalent because the coil does not benefit from the impedance drop across the AC cycle. Holding current drops with supply voltage: at 48 VDC it is 2 A, at 110 VDC it is 1 A, and at 230 VDC it is 6 A. The coil is designed for continuous duty within the -25 to +60 °C operating ambient. ## Physical fit — Size S3 on DIN rail, with clearance rules The contactor is a Size S3 frame: 70 mm wide, 140 mm tall, 152 mm deep. ## Auxiliary contacts and wiring capacity An auxiliary switch is included as standard. Up to two additional auxiliary contact blocks can be attached to the front or side. The coil terminals use the same screw-clamp range.","metaTitle":"Siemens 3RT2448-6KB40-0KS0 SIRIUS Contactor, 24 VDC Coil","metaDescription":"Siemens 3RT2448-6KB40-0KS0 SIRIUS contactor, 24 VDC coil, Size S3. Active production. Screw terminals, auxiliary switch included. Quoted to order against BOM.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Contactors"],"specifications":{"Depth":"152 mm","Solid":"2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²)","Width":"70 mm","at DC":"38 ... 57 ms","title":"3RT2448-6KB40-0KS0","Height":"140 mm","Upwards":"10 mm","Forwards":"20 mm","Downwards":"10 mm","Attachable":"2","Arcing Time":"10 ... 20 ms","At The Side":"10 mm","Rated Value":"24 V","description":"contactor AC-1, 160 A, 690 V / 40 °C, 3-pole, 24 V DC, 0.8-1.2* Us, with integrated varistor, auxiliary contacts: 1 NO + 1 NC, main circuit: ring cable lug connection, control and auxiliary circuit: screw terminal, size: S3, customer-specific, only expandable with auxiliary switch 3RH2911-2XF22-0KS","Initial Value":"0.8","During Storage":"-55 ... +80 °C","Of Magnet Coil":"Screw-type terminals","Number Of Holes":"1","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":"1.2","Diameter Of Holes":"6.6 mm","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":"S3","Solid Or Stranded":"2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²)","Product Brand Name":"SIRIUS","Inrush Current Peak":"2.7 A","Product Designation":"Contactor","at 24 V rated value":"10 A","at 48 V rated value":"2 A","at 60 V rated value":"2 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":"6 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","Width Of Connection Bar":"11 mm","For Main Current Circuit":"Ring cable lug connection","Locked-Rotor Current Peak":"2.1 A","Relative Humidity Minimum":"10 %","Holding Current Mean Value":"40 mA","Of Main Circuit Rated Value":"8 kV","Thickness Of Connection Bar":"2.5 mm","at AC in hot operating state":"38.4 W","Substance Prohibitance (Date)":"03/15/2019","Design Of The Surge Suppressor":"with varistor","Duration Of Inrush Current Peak":"50 µs","Locked-Rotor Current Mean Value":"0.9 A","Duration Of Locked-Rotor Current":"150 ms","Of Auxiliary Circuit Rated Value":"6 kV","For Auxiliary And Control Circuit":"screw-type terminals","Function Module For Communication":"No","With Type Of Assignment 2 Required":"gR: 250 A (690 V, 100 kA)","Without Load Current Share Typical":"2.7 W","closing power of magnet coil at DC":"76 W","holding power of magnet coil at DC":"2.7 W","At Contactor For Auxiliary Contacts":"Screw-type terminals","operating frequency at AC-1 maximum":"650 1/h","With Type Of Coordination 1 Required":"gG: 250 A (690 V,100 kA)","operational current at AC-12 maximum":"10 A","at AC in hot operating state per pole":"12.8 W","for 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","Type Of Voltage For Main Current Circuit":"AC","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","with low demand rate according to SN 31920":"40 %","with high demand rate according to SN 31920":"73 %","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","Of Main Circuit With Degree Of Pollution 3 Rated Value":"1 000 V","Installation Altitude At Height Above Sea Level Maximum":"2 000 m","Of The Contactor With Added Auxiliary Switch Block Typical":"10 000 000","Of Auxiliary Circuit With Degree Of Pollution 3 Rated Value":"690 V","For Short-Circuit Protection Of The Auxiliary Switch Required":"gG: 10 A (500 V, 1 kA)","minimum cross-section in main circuit at maximum AC-1 rated value":"70 mm²","Of The Contactor With Added Electronically Optimized Auxiliary Switch Block Typical":"5 000 000","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,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/b565132adc8ca4f5501331a77657e7cf.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=1390225&mlfb=3RT2448-6KB40-0KS0"},"ai":{"faq":[{"question":"What compliance documentation does Siemens provide for 3RT2448-6KB40-0KS0?","answer":"The evidence does not list specific compliance certificates (RoHS, REACH, UL, IEC) for this order code. Standard SIRIUS contactors typically carry CE, UKCA, and cULus marks, but the exact documentation set should be confirmed at RFQ for the specific variant."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT2448-6KB40-0KS0","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/3RT2448-6KB40-0KS0 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:51:03.652Z","lastPublished":"2026-08-11T15:51:03.652Z","indexable":true}}