{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT7026-1AB05","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT7026-1AB05","canonicalUrl":"https://aoctrl.com/siemens/3RT7026-1AB05","factsUrl":"https://aoctrl.com/api/mcp/products/3RT7026-1AB05","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RT7026-1AB05, size S0 contactor, 3-pole main contacts, 24 V AC coil, screw-type terminals, IP20 finger-safe.","salesMarkdown":"## What It Is & Where It Goes It's the core switching element for motor loads in a control panel — think conveyors, pumps, fans, compressors up to the S0 current range. The AC-3 rated operational voltage goes up to 690 V, which covers standard 400 V three-phase motor circuits with headroom. The coil is 24 V AC — a common control voltage in industrial panels. Coil holding power is only 0.24 W DC, so the PLC or relay driving it sees a light load once the contactor is sealed. The auxiliary contact ratings are 6 A at 230 V, 3 A at 400 V, and 1 A at 690 V — enough for pilot lights, relays, or feeding back status to a controller. For DC switching, the DC-13 rating at 220 V is 0.3 A — that's your inductive DC load capability, like a DC brake coil or a small solenoid. If you're switching a DC load above that, you'll need a DC-rated contactor or a suppression network. Shock resistance is 12.5g at 5 ms and 7.8g at 10 ms — it'll hold in a vibrating machine tool or a compressor skid. Switching frequency: up to 800 operations per hour under AC-3 duty (motor starting), and 250 per hour under AC-4 (plugging/reversing). That's plenty for most process applications; if you're doing high-speed indexing, you'd need a larger frame or a dedicated DC-switching contactor. This matters when you're doing the selectivity study for the panel. ## Integration Notes The contactor accepts 2 x 0.5 to 1.5 mm² solid or stranded, or 2 x 0.75 to 2.5 mm² — fine for control wiring. An auxiliary switch block can be added on top (product extension auxiliary switch is supported), which is useful for adding a second NC or NO feedback contact without changing the base unit. Operating temperature range is -10 to +55 °C, storage -25 to +70 °C. That covers most indoor panel environments; if the panel is near a furnace or in a desert, you'll need to check the derating.","metaTitle":"Siemens 3RT7026-1AB05 Contactor, S0, 3-pole, 24 VAC coil","metaDescription":"Siemens 3RT7026-1AB05 SIRIUS contactor, size S0, 3-pole, 24 VAC coil, screw terminals, IP20. Current production. Sourced to order.","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 standard mounting 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)","Degree Of Pollution":"3","at 230 V rated value":"6 A","at 400 V rated value":"3 A","at 50 Hz rated value":"24 V","at 690 V rated value":"1 A","Side-By-Side Mounting":"Yes","For Main Current Circuit":"screw-type terminals","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":"0.82 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: 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","operating voltage at AC-3 rated value maximum":"690 V","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/76e7c70151b715d7aefcecbdadc817e1.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=1533943&mlfb=3RT7026-1AB05","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT7026-1AB05/alternatives.json"},"ai":{"faq":[{"question":"What are the key dimensions of this contactor?","answer":"Width 55 mm, height 85.5 mm, depth 91 mm. It fits the S0 frame footprint and mounts on 35 mm DIN rail."},{"question":"What compliance documentation is available for this part?","answer":"The part carries IP20 finger-safe protection on the front and terminals. It is designed for pollution degree 3 and has a surge voltage resistance of 6 kV. Standard Siemens documentation includes the datasheet and CE declaration of conformity; specific RoHS/REACH declarations are available from the manufacturer upon request."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT7026-1AB05","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/3RT7026-1AB05 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}}