{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT2046-1NB34-3MA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT2046-1NB34-3MA0","canonicalUrl":"https://aoctrl.com/siemens/3RT2046-1NB34-3MA0","factsUrl":"https://aoctrl.com/api/mcp/products/3RT2046-1NB34-3MA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RT2046-1NB34-3MA0, S3 power contactor, 20-33 V coil, screw-type terminals, screw and snap-on DIN rail mounting.","salesMarkdown":"The S3 frame is the mid-size in the SIRIUS contactor family, balancing contact rating with panel footprint. ## Coil circuit and control voltage The coil is rated for a control voltage of 20... 33 V, with a pickup threshold at 0.8 of rated value and a dropout level at 0.55 of rated value. Inrush current peaks at 6.5 A, then settles to a holding power of 3.5 VA at both 50 Hz and 60 Hz. Operating times are symmetrical — 38... 57 ms for both AC and DC coil supplies — and arcing time runs 10... 20 ms. The coil termination uses screw-type terminals, which is the standard for this frame and avoids the need for special crimp tools on the control wiring. ## Main contact ratings and switching frequency The main contacts are configured as a 10-pole normally open set, with 2 auxiliary contacts. The contactor's switching frequency varies by duty class: up to 900 operations per hour in AC-1 (resistive), 850 in AC-3 (standard motor starting) and AC-3e, 350 in AC-2 (slip-ring motor), and 250 in AC-4 (plugging/inching). The AC-3 and AC-3e ratings are the ones that matter for most three-phase induction motor circuits — 850 ops/h is enough for frequent cycling on conveyors or pumps without derating the contactor. The AC-4 limit of 250 ops/h reflects the higher arc energy during reversing or inching duty. ## Wire sizing and termination The main circuit terminals accept solid conductors from 2.5 to 16 mm² and stranded conductors from 6 to 70 mm². Auxiliary contact terminals accept two conductors per clamp: 2x (0.5... 1.5 mm²) solid or stranded, or 2x (0.75... 2.5 mm²). That 70 mm² stranded capacity on the mains is generous for an S3 frame — it covers the full rated current without needing lug adapters. The screw terminals are the same type used across the SIRIUS S3 range, so panel builders can standardise termination tooling. ## Environmental limits and mounting flexibility The physical envelope is 140 mm high, 70 mm wide, and 195 mm deep — the depth is the dimension that typically governs gland-plate clearance in shallow enclosures. ## Mechanical endurance and auxiliary contact ratings The auxiliary contacts are rated for switching at various control voltages: 6 A at 24 V, 2 A at 48 V, 2 A at 60 V, and 1 A at 110 V. These ratings are for the auxiliary switch block integrated into the contactor, not a separate add-on module.","metaTitle":"Siemens 3RT2046-1NB34-3MA0 SIRIUS Power Contactor, S3 Frame","metaDescription":"Siemens SIRIUS 3RT2046-1NB34-3MA0 power contactor, S3 size, 20-33 V coil, screw terminals, DIN rail mount. Active lifecycle. Sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Contactors"],"specifications":{"Depth":"195 mm","Solid":"2.5 ... 16 mm²","Width":"70 mm","at AC":"38 ... 57 ms","at DC":"38 ... 57 ms","title":"3RT2046-1NB34-3MA0","Height":"140 mm","Upwards":"10 mm","Forwards":"20 mm","Stranded":"6 ... 70 mm²","at 50 Hz":"3.5 VA","at 60 Hz":"3.5 VA","Downwards":"10 mm","Arcing Time":"10 ... 20 ms","At The Side":"10 mm","Rated Value":"20 ... 33 V","description":"power contactor, AC-3e/AC-3, 95 A, 45 kW / 400 V, 3-pole, 20-33 V AC/DC, 50/60 Hz, with integrated varistor, auxiliary contacts: 2 NO + 2 NC, screw terminal, size: S3, captive auxiliary switch","Initial Value":"0.8","During Storage":"-55 ... +80 °C","Of Magnet Coil":"Screw-type terminals","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","Auxiliary Switch":"Yes","During Operation":"-25 ... +60 °C","Fastening Method":"screw and snap-on mounting onto 35 mm standard mounting rail according to DIN EN 60715","Full-Scale Value":"1.1","at AC-3e maximum":"850 1/h","For Main Contacts":"10 ... 2","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":"S3","Solid Or Stranded":"2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²)","Product Brand Name":"SIRIUS","Inrush Current Peak":"6.5 A","Product Designation":"Power contactor","at 24 V rated value":"6 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":"20 hp","at 400 V rated value":"3 A","at 440 V rated value":"0.8 A","at 480 V rated value":"96 A","at 50 Hz rated value":"20 ... 33 V","at 500 V rated value":"2 A","at 60 Hz rated value":"20 ... 33 V","at 600 V rated value":"77 A","at 690 V rated value":"1 A","Side-By-Side Mounting":"Yes","at 1000 V rated value":"37 kW","For Auxiliary Contacts":"20 ... 14","For Main Current Circuit":"screw-type terminals","at 110/120 V rated value":"10 hp","at 200/208 V rated value":"30 hp","at 220/230 V rated value":"30 hp","at 460/480 V rated value":"75 hp","at 575/600 V rated value":"75 hp","Locked-Rotor Current Peak":"6.5 A","Relative Humidity Minimum":"10 %","Holding Current Mean Value":"75 mA","Of Main Circuit Rated Value":"8 kV","Safety-Related Switching On":"No","at AC-3 rated value maximum":"1 000 V","at AC in hot operating state":"19.8 W","at AC-2 at 400 V rated value":"45 kW","at AC-3e rated value maximum":"1 000 V","at AC-4 at 400 V rated value":"80 A","safety-related switching OFF":"Yes","Substance Prohibitance (Date)":"03/01/2017","Design Of The Surge Suppressor":"with varistor","Duration Of Inrush Current Peak":"50 µs","Locked-Rotor Current Mean Value":"3.2 A","at AWG cables for main contacts":"2x (10 ... 1/0), 1x (10 ... 2)","Duration Of Locked-Rotor Current":"150 ms","Of Auxiliary Circuit Rated Value":"6 kV","at AC-5a up to 690 V rated value":"114 A","at AC-5b up to 400 V rated value":"95 A","For Auxiliary And Control Circuit":"screw-type terminals","Function Module For Communication":"No","With Type Of Assignment 2 Required":"gG: 160 A (690 V, 100 kA), aM: 100 A (690 V, 100 kA), BS88: 125 A (415 V, 80 kA)","Without Load Current Share Typical":"3.5 W","closing power of magnet coil at DC":"76 W","holding power of magnet coil at DC":"2.7 W","At Contactor For Auxiliary Contacts":"Screw-type terminals","With Type Of Coordination 1 Required":"gG: 250 A (690 V, 100 kA), aM: 160 A (690 V, 100 kA), BS88: 200 A (415 V, 80 kA)","at AWG cables for auxiliary contacts":"2x (20 ... 16), 2x (18 ... 14)","operational current at AC-12 maximum":"10 A","at AC in hot operating state per pole":"6.6 W","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)","mirror contact according to IEC 60947-4-1":"Yes","with low demand rate according to SN 31920":"40 %","with high demand rate according to SN 31920":"73 %","Type Of Voltage Of The Control Supply Voltage":"AC/DC","Limited To 1 S Switching At Zero Current Maximum":"1 725 A; Use minimum cross-section acc. to AC-1 rated value","Limited To 5 S Switching At Zero Current Maximum":"1 297 A; Use minimum cross-section acc. to AC-1 rated value","Limited To 10 S Switching At Zero Current Maximum":"946 A; Use minimum cross-section acc. to AC-1 rated value","Limited To 30 S Switching At Zero Current Maximum":"610 A; Use minimum cross-section acc. to AC-1 rated value","Limited To 60 S Switching At Zero Current Maximum":"486 A; Use minimum cross-section acc. to AC-1 rated value","contact rating of auxiliary contacts according to UL":"A600 / P600","Of Main Circuit With Degree Of Pollution 3 Rated Value":"1 000 V","Installation Altitude At Height Above Sea Level Maximum":"2 000 m","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":"gG: 10 A (500 V, 1 kA)","minimum cross-section in main circuit at maximum AC-1 rated value":"50 mm²","number of NC contacts for auxiliary contacts instantaneous contact":"2","number of NO contacts for auxiliary contacts instantaneous contact":"2","Of The Contactor With Added Electronically Optimized Auxiliary Switch Block Typical":"5 000 000"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$232.41","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/7d28fa7380658c541019ac8751bc4da6.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=629890&mlfb=3RT2046-1NB34-3MA0"},"ai":{"faq":[{"question":"What are the physical dimensions of this contactor?","answer":"The contactor measures 140 mm high, 70 mm wide, and 195 mm deep."},{"question":"What wire sizes does the main circuit accept?","answer":"Solid conductors from 2.5 to 16 mm² and stranded conductors from 6 to 70 mm²."},{"question":"What is the coil voltage range and inrush current?","answer":"The coil is rated 20... 33 V with an inrush current peak of 6.5 A and holding power of 3.5 VA at 50/60 Hz."},{"question":"What is the switching frequency for motor starting duty?","answer":"In AC-3 duty (standard motor starting), the contactor is rated for 850 operations per hour."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT2046-1NB34-3MA0","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/3RT2046-1NB34-3MA0 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:51:03.652Z","lastPublished":"2026-08-11T15:51:03.652Z","indexable":true}}