{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RH2140-2EP00","brand":"Siemens","brandSlug":"siemens","productSlug":"3RH2140-2EP00","canonicalUrl":"https://aoctrl.com/siemens/3RH2140-2EP00","factsUrl":"https://aoctrl.com/api/mcp/products/3RH2140-2EP00","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS auxiliary contactor, size S00, 4 NO instantaneous contacts, 10 A rated operational current at 24 V and 230 V, screw and snap-on mounting on 35 mm standard mounting rail, order code 3RH2140-2EP00.","salesMarkdown":"It's the part you reach for when a motor contactor or a PLC output needs more signal-side switching capacity — a clean way to mirror a coil state or interlock a sequence without adding a second contactor. Rated operational current is 10 A at both 24 V and 230 V, which covers most control-circuit loads in a 400 V panel. The S00 footprint — 45 mm wide, 70 mm tall, 121 mm deep — is the smallest Siemens contactor frame, so it tucks into tight enclosure rows without crowding adjacent devices. Clearance spacing: 10 mm upwards, downwards, and forwards; 6 mm at the side. ## Contact ratings and switching performance Four NO contacts rated for continuous current at 24 V (10 A), 60 V (4.7 A), 110 V (3 A), 220 V (1.2 A), 230 V (10 A), 400 V (3 A), 440 V (0.5 A), 500 V (2 A), 600 V (0.26 A), and 690 V (1 A). Arcing time runs 10 to 15 ms; AC switching time is 4 to 15 ms. The DC switching rate hits 10 000 operations per hour.","metaTitle":"Siemens 3RH2140-2EP00 SIRIUS Auxiliary Contactor, 4 NO, 10 A","metaDescription":"Siemens 3RH2140-2EP00 SIRIUS auxiliary contactor, size S00, 4 NO contacts rated 10 A at 24 V and 230 V. Screw and snap-on mounting on 35 mm DIN rail. Current lifecycle. Available t","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Contactors"],"specifications":{"Depth":"121 mm","Width":"45 mm","at AC":"4 ... 15 ms","at DC":"10 000 1/h","Height":"70 mm","Upwards":"10 mm","Forwards":"10 mm","at 50 Hz":"0.8 ... 1.1","at 60 Hz":"0.85 ... 1.1","Downwards":"10 mm","Arcing Time":"10 ... 15 ms","At The Side":"6 mm","1 Rated Value":"50 Hz","2 Rated Value":"60 Hz","During Storage":"-55 ... +80 °C","lifecycle_stage":"current","During Operation":"-25 ... +60 °C","Fastening Method":"screw and snap-on mounting onto 35 mm standard mounting rail","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":"S00","Solid Or Stranded":"2x (0,5 ... 4 mm²)","Product Brand Name":"SIRIUS","Degree Of Pollution":"3","Product Designation":"Auxiliary contactor","at 24 V rated value":"10 A","at 60 V rated value":"4.7 A","Of Contactor Typical":"30 000 000","at 110 V rated value":"3 A","at 220 V rated value":"1.2 A","at 230 V rated value":"10 A","at 400 V rated value":"3 A","at 440 V rated value":"0.5 A","at 50 Hz rated value":"230 V","at 500 V rated value":"2 A","at 60 Hz rated value":"230 V","at 600 V rated value":"0.26 A","at 690 V rated value":"1 A","Instantaneous Contact":"4","Relative Humidity Minimum":"10 %","Substance Prohibitance (Date)":"10/01/2009","Design Of The Surge Suppressor":"with RC elements","Product Extension Auxiliary Switch":"Yes","Surge Voltage Resistance Rated Value":"6 kV","at AWG cables for auxiliary contacts":"2x (20 ... 12)","operating frequency at DC-12 maximum":"1 000 1/h","operating frequency at DC-13 maximum":"1 000 1/h","operational current at AC-12 maximum":"10 A","reference code according to IEC 81346-2":"K","Finely Stranded With Core End Processing":"2x (0.5 ... 2.5 mm²)","Contact Reliability Of Auxiliary Contacts":"1 faulty switching per 100 million (17 V, 1 mA)","with low demand rate according to SN 31920":"40 %","Finely Stranded Without Core End Processing":"2x (0.5 ... 2.5 mm²)","apparent holding power of magnet coil at AC":"5.7 VA","apparent pick-up power of magnet coil at AC":"37 VA","with high demand rate according to SN 31920":"73 %","number of NO contacts for auxiliary contacts":"4","Type Of Voltage Of The Control Supply Voltage":"AC","contact rating of auxiliary contacts according to UL":"A600 / Q600","Inductive Power Factor With Closing Power Of The Coil":"0.8","Identification Number And Letter For Switching Elements":"40 E","Installation Altitude At Height Above Sea Level Maximum":"2 000 m","Inductive Power Factor With The Holding Power Of The Coil":"0.25","Of The Contactor With Added Auxiliary Switch Block Typical":"10 000 000","Type Of Electrical Connection For Auxiliary And Control Circuit":"spring-loaded terminals","insulation voltage with degree of pollution 3 at AC rated value":"690 V","Of The Contactor With Added Electronically Optimized Auxiliary Switch Block Typical":"5 000 000","Design Of The Fuse Link For Short-Circuit Protection Of The Auxiliary Switch Required":"fuse gL/gG: 10 A","design of the miniature circuit breaker for short-circuit protection of the auxiliary circuit up to 230 V":"C characteristic: 6 A; 0.4 kA"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/00b0bf4bd2b1a526306582503b3a7c26.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=568971&mlfb=3RH2140-2EP00","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RH2140-2EP00/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3RH2140-2EP00 and how do I get a price?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Submit an RFQ to confirm current availability and pricing."},{"question":"What is 3RH2140-2EP00's listed depth on this component line?","answer":"The depth is 121 mm, with a width of 45 mm and height of 70 mm, making it a size S00 frame that fits standard DIN-rail enclosures."},{"question":"Will 3RH2140-2EP00 drop into a panel specified around 3RH2131-2AK60 without rewiring?","answer":"Both are size S00 Siemens SIRIUS auxiliary contactors with the same 45 mm width and DIN-rail mounting, so the physical footprint is identical. However, the contact configuration differs — 3RH2140-2EP00 has 4 NO contacts, while 3RH2131-2AK60 has a different contact arrangement. Verify the contact count matches your circuit before swapping."},{"question":"What compliance documentation does this brand provide for 3RH2140-2EP00?","answer":"The part carries a substance prohibition date of 10/01/2009, indicating RoHS compliance. Siemens typically provides CE, UL, CSA, and IEC declarations for the SIRUS series; specific certificates should be confirmed at order time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RH2140-2EP00","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/3RH2140-2EP00 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}}