{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RH6131-1BB40","brand":"Siemens","brandSlug":"siemens","productSlug":"3RH6131-1BB40","canonicalUrl":"https://aoctrl.com/siemens/3RH6131-1BB40","factsUrl":"https://aoctrl.com/api/mcp/products/3RH6131-1BB40","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS contactor relay, size S00, 24 VDC coil, 1 NC + 3 NO auxiliary contacts, screw-type terminals, snap-on 35 mm DIN rail mount, 73 mm depth.","salesMarkdown":"## SIRIUS contactor relay, 24 VDC, 1 NC + 3 NO Coil pulls 24 VDC at 4 W closing and holding — no AC pick-up curve to worry about on DC supplies. Contact arrangement is 1 NC plus 3 NO, rated 6 A at 24 V for DC-12/DC-13 loads, and the screw-type terminals accept up to 2x 4 mm² solid or 2x 2.5 mm² stranded. Depth is 73 mm, width 45 mm, height 57.5 mm — standard S00 footprint that drops into existing panel layouts. ## Contact reliability and switching frequency Mechanical life of the contactor alone hits 30 million operations; with an added auxiliary switch block it drops to 10 million. Maximum operating frequency is 10,000 cycles per hour for both AC and DC loads. For DC-13 inductive loads, the switching frequency is limited to 1,000 cycles per hour — that's the arc-quenching constraint on DC break, not the mechanical limit. Keep that in mind if this relay is cycling a solenoid valve or brake coil frequently. RoHS compliance date is May 1, 2012, covering the EU RoHS substance prohibitions. The part also meets REACH requirements per Siemens standard declarations. For panel builders needing UL or IEC documentation, the SIRIUS series carries those certifications as a family; specific certificate copies are available on request. ## Wiring and terminal data Screw-type terminals accept 2x (0.5 to 1.5 mm²) solid or stranded, 2x (0.75 to 2.5 mm²) stranded, or 2x 4 mm² solid. For AWG: 2x (20 to 16), 2x (18 to 14), or 2x 12. Finely stranded wire requires core-end processing (ferrules). Strip length is standard for screw terminals; torque values follow Siemens SIRIUS guidelines. Installation altitude is limited to 2,000 m above sea level without derating.","metaTitle":"Siemens 3RH6131-1BB40 SIRIUS Contactor Relay, 24 VDC, 1 NC 3","metaDescription":"Siemens SIRIUS contactor relay 3RH6131-1BB40, size S00, 24 VDC coil, 6 A rated current, 1 NC + 3 NO auxiliary contacts, screw terminals, snap-on DIN rail mount. Current lifecycle s","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":"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 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","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,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=641381&mlfb=3RH6131-1BB40","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RH6131-1BB40/alternatives.json"},"ai":{"faq":[{"question":"What is the difference between 3RH6131-1BB40 and 3RH6131-1BF40?","answer":"Both are SIRIUS size S00 contactor relays with the same 1 NC + 3 NO contact arrangement and screw terminals. The 3RH6131-1BF40 uses a 24 VAC/DC coil instead of the 24 VDC-only coil on the -1BB40. For DC-only control circuits the -1BB40 is the correct fit; for mixed AC/DC control voltage the -1BF40 covers both. Panel footprint and wiring are identical — no rewiring needed to swap between them."},{"question":"Where can I buy 3RH6131-1BB40 and how is it quoted?","answer":"The part is sourced and quoted to order against an RFQ through independent distribution channels. Availability and current pricing are confirmed at quote time — no stock count or price is published here."},{"question":"What compliance documentation is available for 3RH6131-1BB40?","answer":"RoHS compliance date is May 1, 2012, and REACH requirements are met per Siemens declarations. The SIRIUS series carries UL and IEC certifications as a family; certificate copies are available on request."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RH6131-1BB40","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/3RH6131-1BB40 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}}