{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT7027-1AG00","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT7027-1AG00","canonicalUrl":"https://aoctrl.com/siemens/3RT7027-1AG00","factsUrl":"https://aoctrl.com/api/mcp/products/3RT7027-1AG00","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS S0 contactor, 3RT7027-1AG00, 3-pole, AC-3 rated 690 V max, screw terminals, IP20, 45 mm width, snap-on DIN rail.","salesMarkdown":"## S0 contactor for 3-phase motor switching — what the ratings mean The Siemens 3RT7027-1AG00 is a 3-pole S0-frame contactor rated for AC-3 and AC-3e switching up to 690 V. The insulation voltage is 690 V, matching the maximum rated operating voltage. At 45 mm wide, three units fit a 145 mm DIN section — typical for a group of motor starters. The screw-type terminals on both main and auxiliary/control circuits accept 2x 0.5…1.5 mm² solid or stranded, or 2x 0.75…2.5 mm² — common panel wire sizes. The IP20 finger-safe enclosures on the front and terminals allow safe handling inside a closed panel. ## Switching frequency and contact reliability — real-world limits Rated for 800 operations per hour under AC-3 duty (motor starting), but only 250 ops/h under AC-4 (plugging/reversing) — the difference matters if the contactor sees frequent inching or reversing cycles. ## Mounting flexibility and environmental limits Side-by-side mounting is permitted, so no derating for heat buildup when ganged. Operating temperature range -10…+55 °C; storage -25…+70 °C. ## Auxiliary contact extension and coil data The product extension for auxiliary switches is available, so you can add up to four auxiliary contact blocks on the front without removing the contactor from the rail. Coil holding power is only 0.24 W DC — negligible heat in a crowded panel. Closing power peaks at 0.82 W DC.","metaTitle":"Siemens 3RT7027-1AG00 Contactor, S0 Frame, 3-Pole, 690V AC-3","metaDescription":"Siemens 3RT7027-1AG00 S0 contactor, 3-pole, 690V AC-3 max, IP20 terminals, screw/snap-on DIN rail. Active production. Quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Contactors"],"specifications":{"Depth":"91 mm","Width":"45 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":"36 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: 50 A","closing power of magnet coil at DC":"0.82 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: 125 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":"0","number of NO contacts for auxiliary contacts instantaneous contact":"0","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":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=1533990&mlfb=3RT7027-1AG00","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT7027-1AG00/alternatives.json"},"ai":{"faq":[{"question":"What is 3RT7027-1AG00's width and depth?","answer":"Width is 45 mm and depth is 91 mm, so it fits a standard 45 mm DIN-rail footprint."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT7027-1AG00","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/3RT7027-1AG00 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}}