{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RH2131-1BB40-ZX95","brand":"Siemens","brandSlug":"siemens","productSlug":"3RH2131-1BB40-ZX95","canonicalUrl":"https://aoctrl.com/siemens/3RH2131-1BB40-ZX95","factsUrl":"https://aoctrl.com/api/mcp/products/3RH2131-1BB40-ZX95","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS auxiliary contactor, size S00, 24 VDC coil, 3 NO contacts, screw and snap-on mounting on 35 mm DIN rail, 45 x 57.5 x 73 mm (WxHxD).","salesMarkdown":"The Siemens SIRIUS 3RH2131-1BB40-ZX95 is a size S00 auxiliary contactor with a 24 VDC coil and three normally open instantaneous contacts. The 24 VDC coil draws 4 W closing and 4 W holding, so the control transformer or PLC output driving it should be sized for that inrush without sag. The three NO contacts are rated for switching at multiple voltage levels: 10 A at 24 V, 10 A at 230 V, 3 A at 400 V, 1 A at 690 V, and 0.5 A at 440 V. These ratings cover AC loads across common industrial voltages — the 10 A at 230 V is typical for general-purpose control circuits, while the 3 A at 400 V suits three-phase motor control circuits. The contacts also carry DC ratings: 10 A at 24 V, 4.7 A at 60 V, 3 A at 110 V, 1.2 A at 220 V, 0.26 A at 600 V. The arcing time is 10 to 15 ms, and the maximum mechanical switching frequency is 10,000 cycles per hour at AC. ## Mounting and environmental Mounting position is flexible: the contactor can be rotated ±180° on a vertical surface and tilted forward or backward by ±22.5°. Clearances required: 10 mm upwards, 10 mm forwards, 10 mm downwards, and 6 mm at the side. Operating temperature range is -25 to +60 °C; storage range is -55 to +80 °C. Pollution degree 3 (industrial environment with conductive pollution). Relative humidity minimum 10 %. The contactor accepts wire cross-sections from 2x 0.5 mm² up to 2x 4 mm² solid or stranded.","metaTitle":"Siemens SIRIUS 3RH2131-1BB40-ZX95 Auxiliary Contactor, 24 VD","metaDescription":"Siemens SIRIUS 3RH2131-1BB40-ZX95 auxiliary contactor, 24 VDC coil, 3 NO contacts, size S00. Rated 10 A at 24 V, 10 A at 230 V, 3 A at 400 V. Current production. Sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Contactors"],"specifications":{"Depth":"73 mm","Width":"45 mm","at AC":"10 000 1/h","at DC":"7 ... 13 ms","Height":"57.5 mm","Upwards":"10 mm","Forwards":"10 mm","Downwards":"10 mm","Arcing Time":"10 ... 15 ms","At The Side":"6 mm","Rated Value":"24 V","Initial Value":"0.8","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","Full-Scale Value":"1.1","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","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 500 V rated value":"2 A","at 600 V rated value":"0.26 A","at 690 V rated value":"1 A","Instantaneous Contact":"3","Relative Humidity Minimum":"10 %","Substance Prohibitance (Date)":"10/01/2009","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":"10 A","reference code according to IEC 81346-2":"K","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)","with low demand rate according to SN 31920":"40 %","with high demand rate according to SN 31920":"73 %","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","contact rating of auxiliary contacts according to UL":"A600 / Q600","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","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/87a2c2a446725cfd59ad45362fc07026.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=159869&mlfb=3RH2131-1BB40-ZX95","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RH2131-1BB40-ZX95/alternatives.json"},"ai":{"faq":[{"question":"What is the closest functional second-source for 3RH2131-1BB40-ZX95?","answer":"The closest functional peer is the 3RH2122-1BA40, which has the same size S00 and 24 VDC coil but with 2 NO + 2 NC contacts instead of 3 NO. The 3RH2131-1BB40-ZX95 provides three normally open contacts; if your circuit requires a mix of NO and NC, the 3RH2122-1BA40 may be a direct drop-in alternative, but verify the contact configuration matches your schematic."},{"question":"Will 3RH2131-1BB40-ZX95 drop into a panel specified around 3RH2122-1BA40 without rewiring?","answer":"Yes, both are size S00, same 45 mm width, same screw and snap-on mounting on 35 mm DIN rail, and same 24 VDC coil. The only difference is contact arrangement: 3 NO vs 2 NO + 2 NC. If your circuit uses only NO contacts, it is a direct swap. If it uses NC contacts, you would need to rewire or choose a different variant."},{"question":"How do I get current pricing and availability for 3RH2131-1BB40-ZX95?","answer":"Submit an RFQ — this part is sourced and quoted to order through independent distribution, with availability and current pricing confirmed at quote time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RH2131-1BB40-ZX95","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/3RH2131-1BB40-ZX95 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}}