{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT2326-1AL20-4AA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT2326-1AL20-4AA0","canonicalUrl":"https://aoctrl.com/siemens/3RT2326-1AL20-4AA0","factsUrl":"https://aoctrl.com/api/mcp/products/3RT2326-1AL20-4AA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS, S0 contactor, 3RT2326-1AL20-4AA0, AC coil, screw-type terminals, 45 x 85 x 97 mm, screw and snap-on mounting on 35 mm DIN rail.","salesMarkdown":"## SIRIUS S0 contactor — panel fit and coil choice The Siemens 3RT2326-1AL20-4AA0 is a SIRIUS S0 contactor with an AC-operated coil terminated at screw-type terminals. The AC coil is rated at 230 V at both 50 Hz and 60 Hz, drawing 0.25 A at 50 Hz and 0.28 A at 60 Hz. That means the coil inrush and hold current are modest — a standard 230 V control transformer or a PLC digital output driving an interposing relay can handle it. The operating temperature range is -25 to +60 °C, with storage from -55 to +80 °C, so it handles warm panel interiors without derating up to 60 °C ambient. The auxiliary switch is included as standard (one N/O + one N/C, typical for the S0 frame), with contact ratings spanning 24 V to 600 V AC. At 24 V it switches 10 A; at 230 V it switches 10 A; at 400 V it switches 3 A; at 600 V it switches 0.1 A. These ratings cover pilot duty and control circuit isolation across common control voltages. ## Wiring and clearance Auxiliary contacts accept 2x (0.5 to 1.5 mm²) solid or 2x (0.75 to 2.5 mm²) stranded — typical for control wiring with ferrules. That is tight enough for dense DIN-rail layouts but leaves room for finger-safe wiring ducts. That helps when the contactor sits in a swing-frame panel or a slanted enclosure.","metaTitle":"Siemens 3RT2326-1AL20-4AA0 SIRIUS Contactor, S0, AC Coil, 45","metaDescription":"Siemens SIRIUS 3RT2326-1AL20-4AA0 contactor, size S0, AC coil screw terminals, 45mm wide, 97mm deep. Active lifecycle. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Contactors"],"specifications":{"Depth":"97 mm","Solid":"2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²)","Width":"45 mm","at AC":"4 ... 16 ms","Height":"85 mm","Upwards":"10 mm","Forwards":"10 mm","Stranded":"1 ... 10 mm²","at 50 Hz":"0.25","at 60 Hz":"0.28","Downwards":"10 mm","Attachable":"2","Arcing Time":"10 ... 10 ms","At The Side":"6 mm","During Storage":"-55 ... +80 °C","Of Magnet Coil":"Screw-type terminals","Type Of Voltage":"AC","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","For Main Contacts":"16 ... 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 ... 1.5 mm²), 2x (0.75 ... 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 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":"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":"screw-type terminals","Relative Humidity Minimum":"10 %","Of Main Circuit Rated Value":"6 kV","at AC in hot operating state":"10.4 W","at AC-3 at 400 V rated value":"15 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":"screw-type terminals","Function Module For Communication":"No","Product Function Bus Communication":"No","With Type Of Assignment 2 Required":"gG: 35 A (690 V, 100 kA)","At Contactor For Auxiliary Contacts":"Screw-type terminals","operating frequency at AC-1 maximum":"1 000 1/h","With Type Of Coordination 1 Required":"gG: 80 A (690 V, 100 kA)","operational current at AC-12 maximum":"10 A","at AC in hot operating state per pole":"2.6 W","for AWG cables for auxiliary contacts":"2x (20 ... 16), 2x (18 ... 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), 2x (0.75 ... 2.5 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","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":"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 / 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=723032&mlfb=3RT2326-1AL20-4AA0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT2326-1AL20-4AA0/alternatives.json"},"ai":{"faq":[{"question":"What are the key dimensions of 3RT2326-1AL20-4AA0?","answer":"Width is 45 mm, height is 85 mm, depth is 97 mm. It fits the S0 frame size and mounts on 35 mm DIN rail."},{"question":"What wire sizes does the 3RT2326-1AL20-4AA0 accept?","answer":"Main contacts accept 1 to 10 mm² solid or stranded. Auxiliary contacts accept 2x (0.5 to 1.5 mm²) solid or 2x (0.75 to 2.5 mm²) stranded."},{"question":"Where can I buy 3RT2326-1AL20-4AA0?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time."},{"question":"What is the closest functional alternative to 3RT2326-1AL20-4AA0?","answer":"The 3RT2326-1BK80 is a peer in the same S0 frame size. The main difference is the coil voltage — the -1BK80 uses a different coil rating. Verify coil voltage compatibility before substituting."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT2326-1AL20-4AA0","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/3RT2326-1AL20-4AA0 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}}