{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RH6140-1BB40","brand":"Siemens","brandSlug":"siemens","productSlug":"3RH6140-1BB40","canonicalUrl":"https://aoctrl.com/siemens/3RH6140-1BB40","factsUrl":"https://aoctrl.com/api/mcp/products/3RH6140-1BB40","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS contactor relay, size S00, 4 NO auxiliary contacts, 24 VDC coil, screw-type terminals, for DIN-rail mounting.","salesMarkdown":"The Siemens SIRIUS 3RH6140-1BB40 is a size S00 contactor relay with four normally open (NO) auxiliary contacts — the 40 E switching-element identifier means 4 NO, zero NC. The 24 VDC coil draws 4 W closing and 4 W holding, so the control transformer or PLC output must source that continuous load. It is rated for 6 A at 24 V (AC-12) and can switch up to 10 A at 230 V, 3 A at 400 V, or 1 A at 690 V, making it suitable for pilot-duty and signal-level loads in motor control centers and panel builders' auxiliary circuits. The 45 mm width and 73 mm depth fit standard S00 contactor spacing, leaving room for an auxiliary switch block alongside. Mounting position is flexible: ±180° rotation on a vertical surface, plus ±22.5° tilt forward/backward, which helps when routing wires in a crowded enclosure. Screw-type terminals accept 2 x (0.5 to 2.5 mm²) solid/stranded or 2 x 4 mm² — no special ferrule needed for the auxiliary and control circuit connections.","metaTitle":"Siemens 3RH6140-1BB40 Contactor Relay, 24 VDC, 4 NO","metaDescription":"Siemens SIRIUS 3RH6140-1BB40 contactor relay, 24 VDC coil, 4 NO contacts, rated 6 A at 24 V. Active production, screw terminals, DIN-rail mount.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Contactors"],"specifications":{"Depth":"73 mm","Width":"45 mm","at AC":"10 000 1/h","at DC":"10 000 1/h","title":"3RH6140-1BB40","Height":"57.5 mm","Rated Value":"24 V","description":"Contactor relay, 4 NO, DC 24 V, size S00, screw terminal","During Storage":"-55 ... +80 °C","lifecycle_stage":"current","During Operation":"-25 ... +60 °C","Fastening Method":"screw and snap-on mounting onto 35 mm DIN 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 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²), 2x 4 mm²","Product Brand Name":"SIRIUS","Product Designation":"Contactor relay","at 24 V rated value":"6 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 690 V rated value":"1 A","Substance Prohibitance (Date)":"05/01/2012","Product Extension Auxiliary Switch":"Yes","closing power of magnet coil at DC":"4 W","holding power of magnet coil at DC":"4 W","Surge Voltage Resistance Rated Value":"6 kV","at AWG cables for auxiliary contacts":"2x (20 ... 16), 2x (18 ... 14), 2x 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":"6 A","Finely Stranded With Core End Processing":"2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²)","Contact Reliability Of Auxiliary Contacts":"1 faulty switching per 100 million (17 V, 1 mA)","number of NO contacts for auxiliary contacts":"4","Type Of Voltage Of The Control Supply Voltage":"DC","Identification Number And Letter For Switching Elements":"40 E","Installation Altitude At Height Above Sea Level Maximum":"2 000 m","Of The Contactor With Added Auxiliary Switch Block Typical":"10 000 000","Type Of Electrical Connection For Auxiliary And Control Circuit":"screw-type terminals","insulation voltage with degree of pollution 3 at AC rated value":"690 V","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,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/516cb0a2016cb91edd3500d9545c1a70.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=641395&mlfb=3RH6140-1BB40"},"ai":{"faq":[{"question":"How many NO contacts does 3RH6140-1BB40 have?","answer":"It has four normally open (NO) auxiliary contacts — the 40 E switching-element code means 4 NO, zero NC."},{"question":"Where can I buy 3RH6140-1BB40?","answer":"This part is sourced to order through independent distribution. Submit an RFQ for current pricing and availability — confirmed at quote time."},{"question":"What is the contact rating of 3RH6140-1BB40?","answer":"At 24 V it is rated 6 A (AC-12), at 230 V it switches 10 A, at 400 V it switches 3 A, and at 690 V it switches 1 A. The DC-13 maximum operating frequency is 1 000 cycles per hour."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RH6140-1BB40","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/3RH6140-1BB40 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}}