{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RH6131-1BW40","brand":"Siemens","brandSlug":"siemens","productSlug":"3RH6131-1BW40","canonicalUrl":"https://aoctrl.com/siemens/3RH6131-1BW40","factsUrl":"https://aoctrl.com/api/mcp/products/3RH6131-1BW40","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS contactor relay, 3RH6131-1BW40, size S00, 48 VDC coil, 3NO+1NC auxiliary contacts, screw terminals, snap-on 35 mm DIN rail.","salesMarkdown":"The Siemens 3RH6131-1BW40 is a SIRIUS contactor relay — size S00, 48 VDC coil, 3 normally-open plus 1 normally-closed auxiliary contact (switching element identifier 31 E). It's designed to switch control circuits, signal interlocking, and pilot duty loads in a panel. The DC coil pulls 4 W closing and 4 W holding, so it's a continuous-duty magnet — no economizer needed. Rated operational current at AC-12 (resistive) is 6 A; at 230 V AC it handles 10 A, at 400 V AC 3 A, and at 690 V AC 1 A. For DC-13 switching at 24 V it's rated 6 A, dropping to 3 A at 110 V and 1.2 A at 220 V. That range covers most pilot-duty and signal-level loads you'd find in a motor control center. Mechanical life of the contactor alone is 30 million operations; with an added auxiliary switch block it's still 10 million. At 10,000 cycles per hour (both AC and DC), that's years of continuous service. Dimensions are 57.5 mm high, 45 mm wide, 73 mm deep — a compact S00 footprint that fits tightly in a crowded enclosure. Screw-type terminals for auxiliary and control circuits accept 2 x (0.5 to 1.5 mm²) solid or stranded, 2 x (0.75 to 2.5 mm²), or 2 x 4 mm². For AWG, that's 2 x (20 to 16), 2 x (18 to 14), or 2 x 12. Finely stranded with core-end processing is also supported. Strip length is standard for screw clamps — no special tool needed. RoHS compliant with substance prohibition date 05/01/2012. Surge voltage resistance rated at 6 kV. Installation altitude up to 2,000 m above sea level without derating.","metaTitle":"Siemens 3RH6131-1BW40 SIRIUS Contactor Relay, 48 VDC, 3NO+1N","metaDescription":"Siemens SIRIUS contactor relay 3RH6131-1BW40, 48 VDC coil, 6 A AC-12, 3NO+1NC auxiliary contacts, screw terminals, snap-on DIN rail. Current production. Sourced to order.","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":"48 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","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","for AWG cables for auxiliary contacts":"2x (20 ... 16), 2x (18 ... 14), 2x 12","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=641384&mlfb=3RH6131-1BW40","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RH6131-1BW40/alternatives.json"},"ai":{"faq":[{"question":"What are the key ratings for this contactor relay?","answer":"48 VDC coil, 3NO+1NC auxiliary contacts, AC-12 rated current 6 A, mechanical life 30 million operations. It switches up to 10 A at 230 V AC and 6 A at 24 V DC."},{"question":"What compliance documentation is available?","answer":"RoHS compliant per substance prohibition date 05/01/2012. Surge voltage resistance 6 kV, altitude 2,000 m. Operating temperature -25 to +60 °C, storage -55 to +80 °C."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RH6131-1BW40","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/3RH6131-1BW40 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}}