{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT7026-1AL25","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT7026-1AL25","canonicalUrl":"https://aoctrl.com/siemens/3RT7026-1AL25","factsUrl":"https://aoctrl.com/api/mcp/products/3RT7026-1AL25","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RT7026-1AL25, size S0, 3-pole power contactor, 690 V AC-3 rated, 55 mm width, screw terminals, IP20 front and terminal protection.","salesMarkdown":"## Siemens SIRIUS 3RT7026-1AL25 — 3-Pole Power Contactor, Size S0 Mounting is via screw and snap-on onto 35 mm DIN rail per DIN EN 50022, with ±180° rotation and ±22.5° tilt allowed on vertical surfaces — useful for tight enclosure layouts. Coil consumption is 0.72 W during pick-up and 0.24 W holding at DC — low enough to keep heat rise minimal in a crowded DIN rail row. The screw-type terminals on both main and auxiliary circuits accept 2x (0.5 to 2.5 mm²) solid or finely stranded wire with ferrules, matching common panel-wiring practice. ## AC-3 Motor Switching and Coordination For motor starting duty (AC-3), the contactor is rated at 690 V maximum, with a rated operational current that depends on the applied voltage: 6 A at 230 V, 3 A at 400 V, and 1 A at 690 V. These values determine the maximum induction motor current it can switch under Category AC-3 — the load governs which column applies. The switching frequency is 800 operations per hour for AC-3 and AC-3e, dropping to 250 per hour for AC-4 (plugging/inching) duty. The impulse withstand voltage is 6 kV, and the pollution degree is 3 (controlled environment, not sealed). ## Dimensions, Mounting, and Auxiliary Options The S0 frame occupies 55 mm width, 85.5 mm height, and 91 mm depth — a standard footprint for this size class. The product accepts auxiliary switch blocks as a field-addable extension, so a single catalog number covers the base contactor and you add the aux contacts separately.","metaTitle":"Siemens 3RT7026-1AL25 SIRIUS Contactor, 3-Pole, AC-3 690 V,","metaDescription":"Siemens 3RT7026-1AL25 SIRIUS contactor, size S0, 3-pole, AC-3 rated 690 V, 55 mm width, IP20. Active production. Sourced to order. Request quote.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Contactors"],"specifications":{"Depth":"91 mm","Width":"55 mm","Height":"85.5 mm","at 50 Hz":"0.24","at 60 Hz":"0.24","On The Front":"IP20","During Storage":"-25 ... +70 °C","Of The Terminal":"IP20","at AC-3 maximum":"800 1/h","at AC-4 maximum":"250 1/h","lifecycle_stage":"current","During Operation":"-10 ... +55 °C","Fastening Method":"screw and snap-on mounting onto 35 mm DIN rail according to DIN EN 50022","at AC-3e maximum":"800 1/h","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)","Degree Of Pollution":"3","at 230 V rated value":"6 A","at 400 V rated value":"3 A","at 50 Hz rated value":"230 V","at 60 Hz rated value":"230 V","at 690 V rated value":"1 A","Side-By-Side Mounting":"Yes","For Main Current Circuit":"screw-type terminals","at AC-3 rated value maximum":"690 V","at AC-3e rated value maximum":"690 V","Insulation Voltage Rated Value":"690 V","For Auxiliary And Control Circuit":"screw-type terminals","Product Extension Auxiliary Switch":"Yes","With Type Of Assignment 2 Required":"gL/gG NH 3NA: 35 A","closing power of magnet coil at DC":"0.72 W","holding power of magnet coil at DC":"0.24 W","Surge Voltage Resistance Rated Value":"6 kV","With Type Of Coordination 1 Required":"gL/gG NH 3NA: 80 A","shock resistance with sine pulse at AC":"12.5g / 5 ms, 7.8g / 10 ms","number of NC contacts for main contacts":"0","number of NO contacts for main contacts":"3","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":"3","Contact Reliability Of Auxiliary Contacts":"acceptability for PLC control (17 V, 5 mA)","Type Of Voltage Of The Control Supply Voltage":"AC","operational current at DC-13 at 220 V rated value":"0.3 A","Installation Altitude At Height Above Sea Level Maximum":"2 000 m","Required Spacing With Side-By-Side Mounting At The Side":"0 mm","For Short-Circuit Protection Of The Auxiliary Switch Required":"fuse gL/gG: 10 A","number of NC contacts for auxiliary contacts instantaneous contact":"1","number of NO contacts for auxiliary contacts instantaneous contact":"1","Connectable Conductor Cross-Section For Main Contacts Finely Stranded With Core End Processing":"6 mm²","Connectable Conductor Cross-Section For Auxiliary Contacts Finely Stranded With Core End Processing":"0.5 ... 2.5 mm²"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/dfa082cce2a20bd7a6ba0a16f510fb2b.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=1533964&mlfb=3RT7026-1AL25","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT7026-1AL25/alternatives.json"},"ai":{"faq":[{"question":"What are the key ratings for the 3RT7026-1AL25?","answer":"It is a 3-pole contactor rated for AC-3 duty at 690 V maximum, with switching frequencies of 800 ops/h for AC-3 and 250 ops/h for AC-4. The S0 frame size is 55 mm wide, 85.5 mm tall, and 91 mm deep. Coil consumption is 0.72 W pick-up, 0.24 W hold at DC."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT7026-1AL25","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/3RT7026-1AL25 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}}