{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RH6131-1KB40","brand":"Siemens","brandSlug":"siemens","productSlug":"3RH6131-1KB40","canonicalUrl":"https://aoctrl.com/siemens/3RH6131-1KB40","factsUrl":"https://aoctrl.com/api/mcp/products/3RH6131-1KB40","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS coupling relay 3RH6131-1KB40, size S00, 24 VDC coil, 1 NC + 3 NO auxiliary contacts, screw terminals, 35 mm DIN rail mount, 73 x 45 x 57.5 mm.","salesMarkdown":"The Siemens 3RH6131-1KB40 is a SIRIUS coupling relay designed for switching auxiliary circuits in control panels. It carries a 24 VDC coil and is rated for 6 A at that voltage, with 1 NC and 3 NO auxiliary contacts. The S00 contactor size keeps the footprint compact at 45 mm wide. Built-in suppressor diode handles the coil's DC switching transient — no external flyback diode needed across the coil. Rated for 30,000,000 mechanical cycles typical. RoHS compliance date is May 1, 2012.","metaTitle":"Siemens 3RH6131-1KB40 SIRIUS Coupling Relay, 24 VDC, 6 A","metaDescription":"Siemens 3RH6131-1KB40 SIRIUS coupling relay for auxiliary circuits. 24 VDC coil, 6 A rated current, 1 NC + 3 NO contacts. Screw terminals, 35 mm DIN rail mount. Current production.","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","Height":"57.5 mm","Rated Value":"24 V","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":"Coupling relay for switching auxiliary circuits","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","Design Of The Surge Suppressor":"suppressor diode","Product Extension Auxiliary Switch":"No","closing power of magnet coil at DC":"2.8 W","holding power of magnet coil at DC":"2.8 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 NC contacts for auxiliary contacts":"1","number of NO contacts for auxiliary contacts":"3","Type Of Voltage Of The Control Supply Voltage":"DC","Identification Number And Letter For Switching Elements":"31 E","Installation Altitude At Height Above Sea Level Maximum":"2 000 m","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,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=641385&mlfb=3RH6131-1KB40","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RH6131-1KB40/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3RH6131-1KB40 and get current pricing?","answer":"Sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time."},{"question":"What are the key ratings for 3RH6131-1KB40?","answer":"24 VDC coil, 6 A rated current at 24 V, 1 NC + 3 NO auxiliary contacts, screw terminals, 35 mm DIN rail mount, S00 size."},{"question":"Will 3RH6131-1KB40 drop into a panel specified around 3RH6131-1BF40?","answer":"Both are S00 size coupling relays on the same 35 mm DIN rail footprint with identical contact configurations (1 NC + 3 NO). The 3RH6131-1BF40 uses a 24 VAC/DC coil; the 1KB40 is 24 VDC only. Wiring and panel cutout are the same, but verify coil voltage compatibility before swapping."},{"question":"What compliance documentation does Siemens provide for 3RH6131-1KB40?","answer":"RoHS compliance date is May 1, 2012. The part carries the SIRIUS brand and is designed to IEC/EN standards typical for industrial control equipment."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RH6131-1KB40","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/3RH6131-1KB40 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}}