{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT2024-2BB44-ZX95","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT2024-2BB44-ZX95","canonicalUrl":"https://aoctrl.com/siemens/3RT2024-2BB44-ZX95","factsUrl":"https://aoctrl.com/api/mcp/products/3RT2024-2BB44-ZX95","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS power contactor, 3RT2024-2BB44-ZX95, S0 size, 24 VDC coil, spring-type terminals, 45 mm width, current production.","salesMarkdown":"The coil is rated 24 VDC, drawing 6 A at that rated value — a key figure for sizing the control transformer or DC power supply feeding the panel. Main contact termination uses spring-type terminals, accepting solid or stranded wire from 1 to 10 mm², with dual-wire capacity for 2x (0.5 to 2.5 mm²). This speeds wiring compared to screw clamps, especially on repetitive builds. Switching frequency is rated at 1,000 operating cycles per hour for AC-1, AC-2, AC-3, and AC-3e duty, dropping to 300 cycles per hour for AC-4. For high-cycling applications like rapid reversing or jogging, the AC-4 limit is the binding constraint. Mechanical life is typical 10,000,000 operations — the contactor itself will outlast most application cycles if the electrical load stays within the rated utilization category. This helps when the DIN rail is oriented unusually or the panel layout is tight. ## Clearance and Wiring Details Physical dimensions: 102 mm height, 45 mm width, 154 mm depth. These are the minimum air gaps for heat dissipation and arc containment; crowding the contactor against cable ducts or other devices risks derating. Arcing time is 10 to 10 ms — a tight band, meaning the arc extinguishes quickly, which helps with contact life and reduces EMI in the panel. This variant has no auxiliary switch block (Auxiliary Switch: No). If your circuit needs feedback or status signaling, you will need to add a separate auxiliary contact block that fits the S0 frame. The paperwork — CE, RoHS, REACH, and manufacturer declarations — is standard for a Siemens SIRIUS contactor and can be provided with the shipment.","metaTitle":"Siemens 3RT2024-2BB44-ZX95 SIRIUS Power Contactor, 24 VDC Co","metaDescription":"Siemens SIRIUS 3RT2024-2BB44-ZX95 power contactor, 24 VDC coil, S0 size, spring-type terminals, current production. Sourced to order via RFQ.","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 ... 18 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":"1 000 1/h","at AC-3 maximum":"1 000 1/h","at AC-4 maximum":"300 1/h","lifecycle_stage":"current","Auxiliary Switch":"No","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","at AC-3e maximum":"1 000 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":"2 hp","at 400 V rated value":"3 A","at 440 V rated value":"0.6 A","at 480 V rated value":"11 A","at 500 V rated value":"2 A","at 600 V rated value":"11 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":"1 hp","at 200/208 V rated value":"3 hp","at 220/230 V rated value":"3 hp","at 460/480 V rated value":"7.5 hp","at 575/600 V rated value":"10 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":"0.9 W","at AC-3e rated value maximum":"690 V","at AC-4 at 400 V rated value":"12.5 A","safety-related switching OFF":"Yes","Substance Prohibitance (Date)":"10/01/2009","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":"9.9 A","For Auxiliary And Control Circuit":"spring-loaded terminals","Function Module For Communication":"No","With Type Of Assignment 2 Required":"gG: 25A (690V,100kA), aM: 20A (690V,100kA), BS88: 25A (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: 63A (690V,100kA), aM: 32A (690V,100kA), BS88: 63A (415V,80kA)","operational current at AC-12 maximum":"10 A","at AC in hot operating state per pole":"0.3 W","for AWG cables for auxiliary contacts":"2x (20 ... 14)","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":"210 A; Use minimum cross-section acc. to AC-1 rated value","Limited To 5 S Switching At Zero Current Maximum":"210 A; Use minimum cross-section acc. to AC-1 rated value","Limited To 10 S Switching At Zero Current Maximum":"170 A; Use minimum cross-section acc. to AC-1 rated value","Limited To 30 S Switching At Zero Current Maximum":"126 A; Use minimum cross-section acc. to AC-1 rated value","Limited To 60 S Switching At Zero Current Maximum":"105 A; Use minimum cross-section acc. to AC-1 rated value","contact rating of auxiliary contacts according to UL":"A600 / Q600","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 (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":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/98298057757938cf3624fc8b4f9dec15.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=319654&mlfb=3RT2024-2BB44-ZX95","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT2024-2BB44-ZX95/alternatives.json"},"ai":{"faq":[{"question":"What are the key dimensions and mounting requirements?","answer":"The contactor measures 102 mm high, 45 mm wide, and 154 mm deep. It mounts on a 35 mm DIN rail per DIN EN 60715, with minimum clearances of 10 mm upwards, forwards, and downwards, and 6 mm at the side."},{"question":"What wire sizes does the spring terminal accept?","answer":"The spring-type terminals accept solid or stranded wire from 1 to 10 mm², and dual-wire capacity for 2x (0.5 to 2.5 mm²)."},{"question":"Does this contactor include an auxiliary switch?","answer":"No, this variant has no auxiliary switch. If status feedback is needed, a separate auxiliary contact block for the S0 frame must be added."},{"question":"What is the coil voltage and current draw?","answer":"The coil is rated 24 VDC and draws 6 A at that rated value."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT2024-2BB44-ZX95","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/3RT2024-2BB44-ZX95 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}}