{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT2026-2FB44-3MA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT2026-2FB44-3MA0","canonicalUrl":"https://aoctrl.com/siemens/3RT2026-2FB44-3MA0","factsUrl":"https://aoctrl.com/api/mcp/products/3RT2026-2FB44-3MA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS power contactor, size S0, 24 VDC coil, spring-type terminals, 3RT2026-2FB44-3MA0.","salesMarkdown":"It is rated for AC-3 motor switching at up to 750 operating cycles per hour, and the coil draws 6 A at 24 VDC under DC-13 duty — a figure that governs the sizing of the control transformer or DC supply feeding it. The S0 footprint measures 45 mm wide, 102 mm tall, and 154 mm deep — the depth dimension is the one to watch when the panel backplate is tight against an enclosure wall or a second row of components. ## Clearance and wiring The main circuit accepts solid or stranded conductors from 1 to 10 mm²; the coil terminals accept 2x (0.5 to 2.5 mm²) solid or stranded. Spring-type terminals mean no screw torque to verify, but the wire strip length and ferrule selection (if using ferruled stranded) need to match the spring cage spec — per the datasheet, solid or ferruled stranded within the listed cross-section range. ## Switching frequency and duty class Maximum switching frequency depends on the duty class: 1 000 cycles/hour for AC-1 resistive loads, 750 cycles/hour for AC-2 and AC-3 motor loads, 750 cycles/hour for AC-3e, and 250 cycles/hour for AC-4 (plugging/reversing). The arcing time per the datasheet is 10 to 10 ms — a narrow window that suggests consistent arc extinction across the rated range. Mechanical life is listed at 10 000 000 operating cycles typical.","metaTitle":"Siemens 3RT2026-2FB44-3MA0 SIRIUS Power Contactor, S0, 24 VD","metaDescription":"Siemens SIRIUS 3RT2026-2FB44-3MA0 power contactor, size S0, 24 VDC coil, spring-type terminals. Rated for AC-3 motor switching at 750 ops/h. Current lifecycle stage. Sourced to ord","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Contactors"],"specifications":{"Depth":"154 mm","Solid":"1 ... 10 mm²","Width":"45 mm","at DC":"15 ... 17.5 ms","Height":"102 mm","Upwards":"10 mm","Forwards":"10 mm","Stranded":"1 ... 10 mm²","Downwards":"10 mm","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":"Spring-type terminals","at AC-1 maximum":"1 000 1/h","at AC-2 maximum":"750 1/h","at AC-3 maximum":"750 1/h","at AC-4 maximum":"250 1/h","lifecycle_stage":"current","Auxiliary Switch":"No","During Operation":"-25 ... +60 °C","Fastening Method":"screw and snap-on mounting onto 35 mm standard mounting rail according to DIN EN 60715","Full-Scale Value":"1.1","at AC-3e maximum":"750 1/h","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":"Power contactor","at 24 V rated value":"6 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":"3 hp","at 400 V rated value":"3 A","at 440 V rated value":"0.6 A","at 480 V rated value":"21 A","at 500 V rated value":"2 A","at 600 V rated value":"22 A","at 690 V rated value":"1 A","Side-By-Side Mounting":"Yes","For Auxiliary Contacts":"20 ... 14","For Main Current Circuit":"spring-loaded terminals","at 110/120 V rated value":"2 hp","at 200/208 V rated value":"5 hp","at 220/230 V rated value":"7.5 hp","at 460/480 V rated value":"15 hp","at 575/600 V rated value":"20 hp","Relative Humidity Minimum":"10 %","Of Main Circuit Rated Value":"6 kV","at AC-3 rated value maximum":"690 V","at AC in hot operating state":"5.7 W","at AC-2 at 400 V rated value":"11 kW","at AC-3e rated value maximum":"690 V","at AC-4 at 400 V rated value":"15.5 A","safety-related switching OFF":"Yes","Substance Prohibitance (Date)":"10/01/2009","Design Of The Surge Suppressor":"with diode assemblies","at AWG cables for main contacts":"2x (18 ... 8)","Of Auxiliary Circuit Rated Value":"6 kV","at AC-5a up to 690 V rated value":"35.2 A","at AC-5b up to 400 V rated value":"20.7 A","For Auxiliary And Control Circuit":"spring-loaded terminals","Function Module For Communication":"No","With Type Of Assignment 2 Required":"gG: 35A (690V, 100kA), aM: 20A (690V, 100kA), BS88: 35A (415V, 80kA)","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","With Type Of Coordination 1 Required":"gG: 100 A (690 V, 100 kA), aM: 50 A (690 V, 100 kA), BS88: 100 A (415 V, 80 kA)","at AWG cables for auxiliary contacts":"2x (20 ... 14)","operational current at AC-12 maximum":"10 A","at AC in hot operating state per pole":"1.9 W","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)","Number Of Poles For Main Current Circuit":"3","Contact Reliability Of Auxiliary Contacts":"1 faulty switching per 100 million (17 V, 1 mA)","mirror contact according to IEC 60947-4-1":"Yes","with low demand rate according to SN 31920":"40 %","Finely Stranded Without Core End Processing":"2x (0.5 ... 2.5 mm²)","with high demand rate according to SN 31920":"73 %","Type Of Voltage Of The Control Supply Voltage":"DC","Limited To 1 S Switching At Zero Current Maximum":"375 A; Use minimum cross-section acc. to AC-1 rated value","Limited To 5 S Switching At Zero Current Maximum":"299 A; Use minimum cross-section acc. to AC-1 rated value","Limited To 10 S Switching At Zero Current Maximum":"200 A; Use minimum cross-section acc. to AC-1 rated value","Limited To 30 S Switching At Zero Current Maximum":"128 A; Use minimum cross-section acc. to AC-1 rated value","Limited To 60 S Switching At Zero Current Maximum":"106 A; 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","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":"10 mm²","number of NC contacts for auxiliary contacts instantaneous contact":"2","number of NO contacts for auxiliary contacts instantaneous contact":"2","Of The Contactor With Added Electronically Optimized Auxiliary Switch Block Typical":"5 000 000"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$74.93","priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=300649&mlfb=3RT2026-2FB44-3MA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT2026-2FB44-3MA0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3RT2026-2FB44-3MA0 and how do I get a price?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm price and lead time."},{"question":"What is the depth of 3RT2026-2FB44-3MA0?","answer":"The depth is 154 mm, which is the dimension to check when the panel backplate is tight against an enclosure wall or a second row of components."},{"question":"What conductor cross-section does the main circuit accept?","answer":"The main circuit accepts solid or stranded conductors from 1 to 10 mm². The coil terminals accept 2x (0.5 to 2.5 mm²) solid or stranded."},{"question":"What compliance documentation does Siemens provide for this contactor?","answer":"The evidence does not list specific compliance documentation (RoHS, REACH, UL, IEC) for this order code. Standard Siemens SIRIUS contactors typically carry CE, UL, and CSA certifications, but confirm the specific declarations for this variant at time of order."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT2026-2FB44-3MA0","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/3RT2026-2FB44-3MA0 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}}