{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT2037-1SB30","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT2037-1SB30","canonicalUrl":"https://aoctrl.com/siemens/3RT2037-1SB30","factsUrl":"https://aoctrl.com/api/mcp/products/3RT2037-1SB30","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS S2 power contactor, 3RT2037-1SB30, 21-33 VAC/VDC coil, screw-type terminals, 55 mm width, 130 mm depth, 114 mm height.","salesMarkdown":"## Siemens SIRIUS 3RT2037-1SB30 — S2 Power Contactor, 21-33 V Coil The S2 frame carries screw-type terminals for the main and auxiliary circuits. ## Coil and Switching Performance The coil draws 2 VA at both 50 Hz and 60 Hz, with an inrush current peak of 2.2 A. Maximum mechanical operating frequency varies by duty: 800 1/h at AC-1, 400 1/h at AC-2, 700 1/h at AC-3, and 200 1/h at AC-4. The AC-3e rating matches the AC-3 maximum at 700 1/h. Typical mechanical service life is 5,000,000 operations. ## Wiring and Panel Fit Screw-type terminals accept 2x (0.5-1.5 mm²) solid or stranded, or 2x (0.75-2.5 mm²). Dimensions are 55 mm width, 114 mm height, 130 mm depth — the S2 frame fits standard 35 mm DIN rail enclosures. The contactor's auxiliary contact ratings cover 24 V (10 A), 48 V (2 A), 60 V (2 A), 110 V (1 A), and 125 V (0.9 A). No official successor has been announced for this active S2 frame contactor. For BOM freeze or second-source planning, the closest functional peer is the smaller S0 frame 3RT2015-1BW42, but verify panel cutout and terminal capacity before substitution — the S2 frame offers higher switching frequency and larger conductor accommodation.","metaTitle":"Siemens 3RT2037-1SB30 SIRIUS Power Contactor, 21-33 V Coil,","metaDescription":"Siemens SIRIUS 3RT2037-1SB30 power contactor, 21-33 VAC/VDC coil, S2 frame. MTBF 52 a. Screw terminals, DIN rail mount. Active production. Request quote for pricing and availabilit","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Contactors"],"specifications":{"MTBF":"52 a","Depth":"130 mm","Width":"55 mm","at AC":"30 ... 55 ms","at DC":"30 ... 55 ms","Height":"114 mm","Upwards":"10 mm","Forwards":"10 mm","at 50 Hz":"2 VA","at 60 Hz":"2 VA","Downwards":"10 mm","Arcing Time":"10 ... 20 ms","At The Side":"6 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":"800 1/h","at AC-2 maximum":"400 1/h","at AC-3 maximum":"700 1/h","at AC-4 maximum":"200 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":"700 1/h","For Main Contacts":"18 ... 1","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":"S2","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":"10 hp","at 400 V rated value":"3 A","at 440 V rated value":"0.6 A","at 480 V rated value":"65 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":"52 A","at 690 V rated value":"1 A","Side-By-Side Mounting":"Yes","For Auxiliary Contacts":"20 ... 14","For Main Current Circuit":"screw-type terminals","at 110/120 V rated value":"5 hp","at 200/208 V rated value":"20 hp","at 220/230 V rated value":"20 hp","at 460/480 V rated value":"50 hp","at 575/600 V rated value":"50 hp","Locked-Rotor Current Peak":"2.6 A","Relative Humidity Minimum":"10 %","Holding Current Mean Value":"0.075 A","Of Main Circuit Rated Value":"6 kV","Safe failure fraction (SFF)":"96 %","Safety-Related Switching On":"No","at AC-3 rated value maximum":"690 V","at AC in hot operating state":"11.4 W","at AC-2 at 400 V rated value":"30 kW","at AC-3e rated value maximum":"690 V","at AC-4 at 400 V rated value":"55 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":"1.6 A","Duration Of Locked-Rotor Current":"230 ms","Of Auxiliary Circuit Rated Value":"6 kV","at AC-5a up to 690 V rated value":"70.4 A","at AC-5b up to 400 V rated value":"53.9 A","For Auxiliary And Control Circuit":"screw-type terminals","Function Module For Communication":"No","With Type Of Assignment 2 Required":"gG: 125A (690V,100kA), aM: 63A (690V,100kA), BS88: 100A (415V,80kA)","Without Load Current Share Typical":"2 W","closing power of magnet coil at DC":"40 W","holding power of magnet coil at DC":"1.6 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":"3.8 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":"1 055 A; Use minimum cross-section acc. to AC-1 rated value","Limited To 5 S Switching At Zero Current Maximum":"730 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":"520 A; Use minimum cross-section acc. to AC-1 rated value","Limited To 30 S Switching At Zero Current Maximum":"336 A; Use minimum cross-section acc. to AC-1 rated value","Limited To 60 S Switching At Zero Current Maximum":"272 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":"690 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":"25 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":"$198.12","priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/8cf9d4f7e507716190f89ba1d68d4bc8.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=1413426&mlfb=3RT2037-1SB30","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT2037-1SB30/alternatives.json"},"ai":{"faq":[{"question":"How do I get current pricing and availability for 3RT2037-1SB30?","answer":"Submit an RFQ through this listing. Pricing and availability are confirmed at quote time through our independent sourcing network — we do not publish live stock or prices."},{"question":"What is 3RT2037-1SB30's listed MTBF?","answer":"The listed MTBF is 52 a (years), indicating a mean time between failures of 52 years under specified operating conditions."},{"question":"Will 3RT2037-1SB30 drop into a panel specified around 3RT2015-1BW42?","answer":"The 3RT2037-1SB30 is an S2 frame contactor, physically larger than the S0 frame 3RT2015-1BW42. Verify panel cutout dimensions, DIN rail spacing, and terminal clearance before substitution — the S2 frame requires more space and accepts larger conductors."},{"question":"What compliance documentation does Siemens provide for 3RT2037-1SB30?","answer":"Standard Siemens documentation includes RoHS, REACH, and CE declarations. UL and IEC certifications are typically available for the SIRIUS contactor family — request specific certificates with your RFQ."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT2037-1SB30","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/3RT2037-1SB30 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}}