{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT2526-1AL20","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT2526-1AL20","canonicalUrl":"https://aoctrl.com/siemens/3RT2526-1AL20","factsUrl":"https://aoctrl.com/api/mcp/products/3RT2526-1AL20","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RT2526-1AL20 contactor, size S0, 230 V AC 50/60 Hz coil, screw-type terminals, integrated auxiliary switch, 97 mm depth.","salesMarkdown":"## Siemens 3RT2526-1AL20 SIRIUS Contactor — 230 V Coil, S0 Frame The contactor mounts via screw or snap-on onto 35 mm DIN rail per EN 50022, and the mounting position allows ±180° rotation on a vertical surface plus ±22.5° tilt forward or backward — useful when panel layout forces an unconventional orientation. An integrated auxiliary switch is included (screw-type terminals), saving a separate aux block on simple forward-reverse or star-delta circuits. The auxiliary contacts are rated 10 A at 24 V, 10 A at 230 V, and 3 A at 400 V, covering pilot-duty and PLC-input signaling. The S0 frame size is Siemens' compact motor-contactor footprint. Switching frequency is spec'd at 1,000 operations per hour for AC-1 resistive loads and 1,500 per hour for DC loads. The AC arcing time ranges from 4 to 16 ms. The -25 °C lower limit means it is not rated for deep-freeze or arctic outdoor cabinets without a heater; for standard indoor panels it is fine. That zero-clearance on five faces means the contactor can be packed tightly against other devices in a multi-row DIN rail assembly, saving panel width. Because the coil voltage (230 V 50/60 Hz) and the integrated auxiliary switch are fixed in the order code, a buyer replacing a failed unit should match the full 3RT2526-1AL20 string — not just the base 3RT2526 frame — to avoid a coil-voltage mismatch or missing aux contacts. ## Wiring and Integration Notes The screw-type coil and auxiliary terminals accept 2x (0.5 to 1.5 mm²) solid or 2x (0.75 to 2.5 mm²) stranded conductors. For panel builders, that means two conductors per terminal are allowed — useful for daisy-chaining control voltage to multiple contactors without a separate terminal block. Dimensions: 85 mm high, 61 mm wide, 97 mm deep. The 61 mm width is the S0 standard, so it fits alongside other S0 devices (overload relays, contactor assemblies) on the same DIN rail without spacing adapters.","metaTitle":"Siemens 3RT2526-1AL20 SIRIUS Contactor, 230V Coil, S0 Size","metaDescription":"Siemens 3RT2526-1AL20 SIRIUS contactor, 230V 50/60Hz coil, S0 size, 97mm depth, screw terminals, auxiliary switch included. Active production, sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Contactors"],"specifications":{"Depth":"97 mm","Solid":"2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²)","Width":"61 mm","at AC":"4 ... 16 ms","at DC":"1 500 1/h","title":"3RT2526-1AL20","Height":"85 mm","Upwards":"0 mm","Forwards":"0 mm","at 50 Hz":"0.28","at 60 Hz":"0.28","Backwards":"0 mm","Downwards":"0 mm","Arcing Time":"10 ... 10 ms","At The Side":"6 mm","description":"Contactor, 2 NO + 2 NC, AC-3, 11 kW, 230 V AC, 50/60 Hz, 4-pole, 2 NO + 2 NC, Size S0, screw terminal 1 NO + 1 NC integrated","During Storage":"-55 ... +80 °C","Of Magnet Coil":"Screw-type terminals","at AC-1 maximum":"1 000 1/h","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 50022","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":"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":"10 A","at 400 V rated value":"3 A","at 440 V rated value":"1 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","Side-By-Side Mounting":"Yes","For Main Current Circuit":"screw-type terminals","Relative Humidity Minimum":"10 %","per NC contact rated value":"25 A","per NO contact rated value":"25 A","Of Main Circuit Rated Value":"6 kV","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","With Type Of Assignment 2 Required":"gG: 35 A (690 V, 50 kA)","at 24 V per NC contact rated value":"35 A","at 24 V per NO contact rated value":"35 A","at AC at 230 V maximum permissible":"0.007 A","At Contactor For Auxiliary Contacts":"Screw-type terminals","at 110 V per NC contact rated value":"7.5 A","at 110 V per NO contact rated value":"15 A","at 220 V per NC contact rated value":"1.5 A","at 220 V per NO contact rated value":"3 A","at 230 V per NC contact rated value":"5.5 kW","at 230 V per NO contact rated value":"5.5 kW","at 400 V per NC contact rated value":"11 kW","at 400 V per NO contact rated value":"11 kW","at 440 V per NC contact rated value":"0.135 A","at 440 V per NO contact rated value":"0.27 A","With Type Of Coordination 1 Required":"gG: 63 A (690 V, 100 kA)","at AWG cables for auxiliary contacts":"2x (20 ... 16), 2x (18 ... 14)","operational current at AC-12 maximum":"10 A","number of NC contacts for main contacts":"2","number of NO contacts for main contacts":"2","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)","at ambient temperature 40 °C rated value":"40 A","at ambient temperature 60 °C rated value":"35 A","mirror contact according to IEC 60947-4-1":"Yes","apparent holding power of magnet coil at AC":"9.4 VA","apparent pick-up power of magnet coil at AC":"87 VA","Type Of Voltage Of The Control Supply Voltage":"AC","for 3-phase AC motor at 460/480 V rated value":"15 hp","for single-phase AC motor at 230 V rated value":"3 hp","Limited To 1 S Switching At Zero Current Maximum":"200 A; Use minimum cross-section acc. to AC-1 rated value","Limited To 5 S Switching At Zero Current Maximum":"200 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","Inductive Power Factor With Closing Power Of The Coil":"0.82","Of Main Circuit With Degree Of Pollution 3 Rated Value":"690 V","Installation Altitude At Height Above Sea Level Maximum":"2 000 m","Inductive Power Factor With The Holding Power Of The Coil":"0.28","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":"fuse gG: 10 A","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","AWG number as coded connectable conductor cross section for main contacts":"16 ... 8","Of The Contactor With Added Electronically Optimized Auxiliary Switch Block Typical":"5 000 000","power loss [W] at AC-3 at 400 V for rated value of the operational current per conductor":"1.6 W"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/5ac2578f2e7b2aac6b872e027a2c54bf.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=1089256&mlfb=3RT2526-1AL20"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT2526-1AL20","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/3RT2526-1AL20 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-22T19:47:38.189Z","lastPublished":"2026-07-22T19:47:38.189Z","indexable":true}}