{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT2046-1SB30","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT2046-1SB30","canonicalUrl":"https://aoctrl.com/siemens/3RT2046-1SB30","factsUrl":"https://aoctrl.com/api/mcp/products/3RT2046-1SB30","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS, power contactor, size S3, 3RT2046-1SB30, coil rated 21-33 V AC/DC, screw-type terminals, MTBF 52 a.","salesMarkdown":"It mounts via screw fixing or snaps onto a 35 mm DIN rail per DIN EN 60715, and the mounting position allows ±180° rotation on a vertical surface plus ±22.5° tilt forward/backward — useful when you're squeezing it into a crowded enclosure and need to orient the coil terminals toward the gland plate. The coil accepts 21–33 V AC or DC (rated value), with a pickup threshold of 0.8× rated and a full-scale dropout of 1.1× rated — so on a nominal 24 VDC control supply it pulls in cleanly at about 17 V and drops out reliably if the supply sags below 26 V. Inrush current peaks at 2.2 A, steady-state draw is 2.4 VA at both 50 and 60 Hz. The magnet coil uses screw-type terminals, same as the main and auxiliary contacts. Main contact wiring accepts solid conductors from 2.5 to 16 mm² or stranded from 6 to 70 mm² — that covers everything from a 4 mm² motor feed up to a 50 mm² supply cable without needing adaptor lugs. Auxiliary contact wiring takes 2×(0.5–1.5 mm²) solid or 2×(0.75–2.5 mm²) stranded. ## Switching frequency and duty-cycle limits This contactor is rated for different maximum switching rates depending on the utilisation category: 900 operations per hour in AC-1 (resistive), 850 in AC-3 (squirrel-cage motor starting), 350 in AC-2 (slip-ring motor), and 250 in AC-4 (plugging/inching). The AC-3e rating matches the AC-3 figure at 850 ops/h. Arcing time sits between 10 and 20 ms, and the make/break times (AC and DC) are both 38–57 ms — consistent, predictable switching for sequenced starter groups. Mechanical endurance is listed at 5 million operations typical. The listed MTBF of 52 years (456,000 hours) is a calculated reliability figure under continuous rated load at 40 °C ambient — useful for a reliability-engineering review but not a warranty or guaranteed service life. It tells you the design target for random-failure rate is low enough that the contactor is unlikely to be the weakest link in a motor starter assembly. ## Panel integration and clearances Dimensions: 70 mm wide, 140 mm high, 152 mm deep. That 152 mm depth is the body alone — factor in the screw-terminal projection and the coil-terminal screws when you're laying out the DIN-rail spacing against the enclosure back wall.","metaTitle":"Siemens 3RT2046-1SB30 SIRIUS Power Contactor, S3, 21-33V Coi","metaDescription":"Siemens SIRIUS 3RT2046-1SB30 power contactor, size S3, 21-33 VAC/VDC coil, screw terminals. MTBF 52 a. Active production. Quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Contactors"],"specifications":{"MTBF":"52 a","Depth":"152 mm","Solid":"2.5 ... 16 mm²","Width":"70 mm","at AC":"38 ... 57 ms","at DC":"38 ... 57 ms","Height":"140 mm","Upwards":"10 mm","Forwards":"20 mm","Stranded":"6 ... 70 mm²","at 50 Hz":"2.4 VA","at 60 Hz":"2.4 VA","Downwards":"10 mm","Arcing Time":"10 ... 20 ms","At The Side":"10 mm","Rated Value":"21 ... 33 V","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 DIN 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":"2.2 A","Product Designation":"Power contactor","at 24 V rated value":"10 A","at 48 V rated value":"2 A","at 60 V rated value":"2 A","Of Contactor Typical":"5 000 000","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":"21 ... 33 V","at 500 V rated value":"2 A","at 60 Hz rated value":"21 ... 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":"0.09 A","Of Main Circuit Rated Value":"8 kV","Safe failure fraction (SFF)":"96 %","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)":"01/29/2021","Design Of The Surge Suppressor":"with varistor","Duration Of Inrush Current Peak":"100 µs","Locked-Rotor Current Mean Value":"4 A","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":"130 W","holding power of magnet coil at DC":"1.8 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)","category according to EN ISO 13849-1":"2","operational current at AC-12 maximum":"10 A","at AC in hot operating state per pole":"6.6 W","stop category according to EN 60204-1":"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","voltage at PLC-control input rated value":"24 V","Contact Reliability Of Auxiliary Contacts":"1 faulty switching per 100 million (17 V, 1 mA)","Recovery Time After Power Failure Typical":"2.1 s","mirror contact according to IEC 60947-4-1":"Yes","with low demand rate according to SN 31920":"40 %","safety device type according to IEC 61508-2":"Type B","with high demand rate according to SN 31920":"73 %","Type Of Voltage Of The Control Supply Voltage":"AC/DC","hardware fault tolerance according to IEC 61508":"0","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","PFHD with high demand rate according to EN 62061":"7.7E-8 1/h","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","SIL Claim Limit (subsystem) according to EN 62061":"2","PFDavg with low demand rate according to IEC 61508":"0.0067","performance level (PL) according to EN ISO 13849-1":"c","type of PLC-control input according to IEC 60947-1":"Type 1","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":"5 000 000","operating range factor of the voltage at PLC-control input":"0.8 ... 1.1","Diagnostics Test Interval By Internal Test Function Maximum":"28 800 s","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":"1","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":"https://cdn.aoctrl.com/7d28fa7380658c541019ac8751bc4da6.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=1413442&mlfb=3RT2046-1SB30","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT2046-1SB30/alternatives.json"},"ai":{"faq":[{"question":"What are the main conductor cross-section ranges?","answer":"Solid conductors: 2.5 to 16 mm². Stranded conductors: 6 to 70 mm². Auxiliary contacts accept 2×(0.5–1.5 mm²) solid or 2×(0.75–2.5 mm²) stranded."},{"question":"What compliance documentation is available?","answer":"The product is a Siemens SIRIUS contactor carrying CE marking for the European market. Specific RoHS, REACH, and UL documentation is provided by Siemens on request through the standard documentation portal."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT2046-1SB30","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/3RT2046-1SB30 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}}