{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT2026-2AL20-ZW96","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT2026-2AL20-ZW96","canonicalUrl":"https://aoctrl.com/siemens/3RT2026-2AL20-ZW96","factsUrl":"https://aoctrl.com/api/mcp/products/3RT2026-2AL20-ZW96","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RT2026-2AL20-ZW96 power contactor, S0 frame size, 18-8 A main contacts, spring-type coil terminals, screw and snap-on 35 mm DIN rail mounting.","salesMarkdown":"## S0 frame, 18-8 A main contacts — what fits where The 3RT2026-2AL20-ZW96 is a Siemens SIRIUS power contactor in the S0 frame size — the smallest of the SIRIUS contactor family, sized for control panels where DIN-rail real estate is tight at 45 mm wide. Main contacts are rated 18-8 A, which means it handles motor starting and resistive loads up to that current range, but the actual continuous current depends on the duty cycle — AC-1 (resistive) allows up to 1000 switching cycles per hour, while AC-3 (motor) and AC-4 (inching/plugging) cap at 750 and 250 cycles per hour respectively. Coil termination uses spring-type terminals — no screw torque to set, just push the stripped wire in, which speeds up panel wiring but means you need a ferrule on stranded wire for a reliable grip. ## Mounting and clearances — panel fit checklist Mounts via screw or snap-on onto 35 mm standard DIN rail per DIN EN 60715 — the snap-on foot saves rail space versus a screw-clamp base, but the screw option gives a positive lock in high-vibration environments. Clearance requirements: 10 mm upwards, 10 mm forwards, 10 mm downwards, and 6 mm at the side — that 6 mm side gap is tight; in a packed panel, adjacent devices on the same rail need that breathing room for heat dissipation and arc flash containment. Mounting position is flexible — +/-180° rotation on a vertical surface, and can be tilted forward/backward by +/-22.5° on a vertical mounting surface, which matters when you're fitting it into a sloped enclosure backplate. Wire range: accepts solid or stranded conductors from 1 to 10 mm², and up to 2x 0.5-2.5 mm² for daisy-chaining control wiring — the spring terminals handle that range without needing to strip different lengths. ## Switching rates and thermal limits — duty cycle reality Maximum switching rate depends on the load type: 1000 cycles/hour for AC-1 resistive loads, 750 cycles/hour for AC-2 and AC-3 motor duty, and only 250 cycles/hour for AC-4 inching or plugging — that AC-4 limit is the one that catches people out on reversing starter applications. Operating temperature range is -25 to +60 °C during operation, with storage from -55 to +80 °C — the -25 °C lower limit means it's fine for unheated plant rooms but not for outdoor cabinets in freezing climates without a heater. Arcing time is 10-10 ms at 50/60 Hz — that's a tight window, meaning the arc extinguishes quickly, which helps with contact life but also means the downstream overload relay needs to coordinate within that arc energy.","metaTitle":"Siemens 3RT2026-2AL20-ZW96 SIRIUS Contactor, S0 Frame","metaDescription":"Siemens 3RT2026-2AL20-ZW96 SIRIUS power contactor, S0 size, 18-8 A main contacts, spring-type coil terminals. Current production. Quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Contactors"],"specifications":{"Depth":"97 mm","Solid":"1 ... 10 mm²","Width":"45 mm","at AC":"4 ... 16 ms","title":"3RT2026-2AL20-ZW96","Height":"102 mm","Upwards":"10 mm","Forwards":"10 mm","Stranded":"1 ... 10 mm²","at 50 Hz":"0.25","at 60 Hz":"0.28","Downwards":"10 mm","Arcing Time":"10 ... 10 ms","At The Side":"6 mm","description":"power contactor, AC-3e/AC-3, 25 A, 11 kW / 400 V, 3-pole, 230 V AC, 50/60 Hz, auxiliary contacts: 1 NO + 1 NC, spring-loaded terminal, size: S0, multi-unit packaging, pack = 18 units","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":"Yes","During Operation":"-25 ... +60 °C","Fastening Method":"screw and snap-on mounting onto 35 mm standard mounting rail according to DIN EN 60715","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":"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":"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 50 Hz rated value":"230 V","at 500 V rated value":"2 A","at 60 Hz rated value":"230 V","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","Safety-Related Switching On":"Yes","at AC-3 rated value maximum":"690 V","at AC in hot operating state":"4.8 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","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":"10.5 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":"1.6 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":"AC","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 / P600","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":"1","number of NO contacts for auxiliary contacts instantaneous contact":"1","Of The Contactor With Added Electronically Optimized Auxiliary Switch Block Typical":"5 000 000"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/967c1157d6da94f4235de55086ad2778.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=665291&mlfb=3RT2026-2AL20-ZW96"},"ai":{"faq":[{"question":"What wire sizes does the 3RT2026-2AL20-ZW96 accept on the main terminals?","answer":"Solid or stranded conductors from 1 to 10 mm², and up to 2x 0.5-2.5 mm² for the auxiliary/control wiring. The spring-type terminals accept both solid and ferruled stranded wire without needing screw torque."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT2026-2AL20-ZW96","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/3RT2026-2AL20-ZW96 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}}