{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1046-1AL20-ZX95","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1046-1AL20-ZX95","canonicalUrl":"https://aoctrl.com/siemens/3RT1046-1AL20-ZX95","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1046-1AL20-ZX95","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS power contactor, size S3, order code 3RT1046-1AL20-ZX95, rated 55 kW at 500 V AC-3, screw-type terminals, snap-on mounting.","salesMarkdown":"It carries a rated power of 55 kW at 500 V in AC-3 duty — the standard motor-switching category per IEC 60947-4-1 — meaning it handles the inrush and break current of a 55 kW induction motor at that voltage. For AC-1 (resistive) duty the mechanical life is rated at 10,000,000 operations typical, and the electrical endurance at AC-1 is 900 operations per hour maximum. ## Terminal capacity and wiring constraints Main circuit terminals are screw-type, accepting solid conductors of 2x (0.5... 1.5 mm²), 2x (0.75... 2.5 mm²), and up to 2x (0.75... 4 mm²). Stranded conductors on the main circuit can be 2x (10... 50 mm²) — a wide range that covers everything from control-circuit pigtails to heavy motor feeders. The auxiliary/control circuit accepts solid or stranded 2x (2.5... 16 mm²). All terminals are rated IP00 for the terminal body, while the front face (with cover or box terminal) is protected to IP20. ## Environmental and mounting specs Side-by-side mounting is permitted without derating for the mechanical endurance, though the electrical switching frequency limits (AC-1 900/h, AC-3 850/h, AC-4 250/h) should be observed. The contactor dimensions are 146 mm height, 70 mm width, 139 mm depth — this depth keeps it within the typical 200 mm deep enclosure profile used for motor control centers.","metaTitle":"Siemens 3RT1046-1AL20-ZX95 SIRIUS Power Contactor, S3, 55 kW","metaDescription":"Siemens 3RT1046-1AL20-ZX95 SIRIUS power contactor, size S3, rated 55 kW at 500 V AC-3. Active production. Screw terminals, snap-on 35/75 mm rail. Sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Contactors"],"specifications":{"Depth":"139 mm","Solid":"2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²), max. 2x (0.75 ... 4 mm²)","Width":"70 mm","at AC":"10 ... 25 ms","Height":"146 mm","Stranded":"2x (10 ... 50 mm²)","at 50 Hz":"0.8 ... 1.1","at 60 Hz":"0.85 ... 1.1","Arcing Time":"10 ... 15 ms","On The Front":"IP20; IP20 on the front with cover / box terminal","1 Rated Value":"50 Hz","2 Rated Value":"60 Hz","During Storage":"-55 ... +80 °C","Of The Terminal":"IP00","at AC-1 maximum":"900 1/h","at AC-2 maximum":"350 1/h","at AC-3 maximum":"850 1/h","at AC-4 maximum":"250 1/h","lifecycle_stage":"current","During Operation":"-25 ... +60 °C","Fastening Method":"screw and snap-on mounting onto 35 mm and 75 mm standard mounting rail","Size Of Contactor":"S3","Solid Or Stranded":"2x (2.5 ... 16 mm²)","Product Brand Name":"SIRIUS","Degree Of Pollution":"3","Product Designation":"power contactor","at 24 V rated value":"10 A","at 60 V rated value":"2 A","Of Contactor Typical":"10 000 000","at 110 V rated value":"1 A","at 220 V rated value":"0.3 A","at 230 V rated value":"6 A","at 400 V rated value":"3 A","at 50 Hz rated value":"230 V","at 500 V rated value":"55 kW","at 60 Hz rated value":"230 V","at 690 V rated value":"25.4 kW","Side-By-Side Mounting":"Yes","at 1000 V rated value":"37 W","For Main Current Circuit":"screw-type terminals","at AC-2 at 400 V rated value":"45 kW","at AC-4 at 400 V rated value":"80 A","Substance Prohibitance (Date)":"05/01/2012","at 40 °C minimum permissible":"50 mm²","at 60 °C minimum permissible":"35 mm²","Insulation Voltage Rated Value":"1 000 V","at 230 V at 60 °C rated value":"38 kW","at 690 V at 60 °C rated value":"114 kW","at 1000 V at 60 °C rated value":"98 W","at AWG cables for main contacts":"2x (10 ... 1/0)","For Auxiliary And Control Circuit":"screw-type terminals","With Type Of Assignment 2 Required":"fuse gL/gG: 160 A","Surge Voltage Resistance Rated Value":"6 kV","With Type Of Coordination 1 Required":"fuse gL/gG: 250 A","at AWG cables for auxiliary contacts":"2x (20 ... 16), 2x (18 ... 14), 1x 12","operational current at AC-12 maximum":"10 A","number of NC contacts for main contacts":"0","number of NO contacts for main contacts":"3","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":"3","Contact Reliability Of Auxiliary Contacts":"1 faulty switching per 100 million (17 V, 1 mA)","Thermal Short-Time Current Limited To 10 S":"760 A","Finely Stranded Without Core End Processing":"2x (10 ... 35 mm²)","apparent holding power of magnet coil at AC":"27 VA","apparent pick-up power of magnet coil at AC":"298 VA","Type Of Voltage Of The Control Supply Voltage":"AC","Required Spacing For Grounded Parts At The Side":"6 mm","contact rating of auxiliary contacts according to UL":"A600 / Q600","Inductive Power Factor With Closing Power Of The Coil":"0.7","Installation Altitude At Height Above Sea Level Maximum":"2 000 m","Inductive Power Factor With The Holding Power Of The Coil":"0.29","Of The Contactor With Added Auxiliary Switch Block Typical":"10 000 000","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","Of The Contactor With Added Electronically Optimized Auxiliary Switch Block Typical":"5 000 000"}},"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=406245&mlfb=3RT1046-1AL20-ZX95","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1046-1AL20-ZX95/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3RT1046-1AL20-ZX95 and how is it quoted?","answer":"This contactor is sourced through independent distribution and quoted to order against an RFQ. Availability and current pricing are confirmed at quote time."},{"question":"Will 3RT1046-1AL20-ZX95 drop into a panel designed around 3RT1044-1FB46 without rewiring?","answer":"Both are SIRIUS power contactors, but the 3RT1046-1AL20-ZX95 is a size S3 frame, while the 3RT1044-1FB46 is a different frame size. The mounting rail (35/75 mm) and terminal screw-type are shared, but the terminal capacities differ: the S3 accepts stranded up to 2x 50 mm², which is larger than the 3RT1044-1FB46's typical range. Verify the existing wire gauge and terminal block layout before assuming a drop-in fit."},{"question":"What compliance documentation does Siemens provide for 3RT1046-1AL20-ZX95?","answer":"Siemens SIRIUS contactors are typically supplied with CE and UKCA declarations of conformity, and the series carries UL and CSA certifications for the North American market. RoHS and REACH compliance documentation is available on request."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1046-1AL20-ZX95","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/3RT1046-1AL20-ZX95 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}}