{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RH1131-1BE40","brand":"Siemens","brandSlug":"siemens","productSlug":"3RH1131-1BE40","canonicalUrl":"https://aoctrl.com/siemens/3RH1131-1BE40","factsUrl":"https://aoctrl.com/api/mcp/products/3RH1131-1BE40","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS auxiliary contactor, size S00, 3RH1131-1BE40, 3 NO contacts, 10 A at 24 V, screw and snap-on mounting, IP20 front.","salesMarkdown":"## SIRIUS auxiliary contactor, size S00 — 3 NO, 10 A The Siemens 3RH1131-1BE40 is a SIRIUS auxiliary contactor in size S00, providing three normally-open (3 NO) instantaneous contacts for control-circuit switching. Rated at 10 A at 24 V (AC-12 maximum 10 A), it handles pilot-duty loads, PLC outputs, and relay coils within a control cabinet. The 6 kV surge voltage resistance gives it a solid margin for industrial environments with switching transients. ## Wire termination and panel fit Terminals accept solid conductors: 2x (0.5...1.5 mm²), 2x (0.75...2.5 mm²), or 2x 4 mm² per clamp. Spring-cage or screw terminals? The spec shows solid wire only — use ferruled stranded at the larger cross-sections to avoid whisker issues. Depth of 72 mm leaves clearance for wiring ducts and gland plates in shallow enclosures. The IP20 front protection means it's intended for enclosed panels, not open washdown areas. ## Switching capacity across voltages The 3RH1131-1BE40's contact ratings drop with voltage: 10 A at 24 V, 6 A at 230 V, 3 A at 400 V, 2 A at 500 V, and 1 A at 690 V. For a 110 V control circuit it delivers 1 A; at 220 V it's 0.27 A. This derating curve follows the AC-12 resistive load profile — don't assume the 10 A holds at higher voltages.","metaTitle":"Siemens 3RH1131-1BE40 SIRIUS Auxiliary Contactor, 10 A, 3 NO","metaDescription":"Siemens 3RH1131-1BE40 SIRIUS auxiliary contactor, size S00. 10 A rated at 24 V, 3 NO contacts. Screw/snap-on mount, IP20. Quoted to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Contactors"],"specifications":{"Depth":"72 mm","Solid":"2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²), 2x 4 mm²","Width":"45 mm","Height":"57.5 mm","Maximum":"2 000 m","At The Side":"0 mm","Rated Value":"60 V","On The Front":"IP20","Initial Value":"0.8","Mounting type":"screw and snap-on mounting","During Storage":"-55 ... +80 °C","Leading Contact":"0","lifecycle_stage":"current","Auxiliary switch":"Yes","During Operation":"-25 ... +60 °C","During Transport":"-55 ... +80 °C","Full-scale value":"1.1","Shock resistance":"10g / 5 ms and 5g / 10 ms","Delayed Switching":"0","Lagging Switching":"0","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","Product brand name":"SIRIUS","Degree of pollution":"3","Product designation":"Auxiliary contactor","at 24 V rated value":"10 A","Of Contactor Typical":"30 000 000","at 110 V rated value":"1 A","at 220 V rated value":"0.27 A","at 230 V rated value":"6 A","at 400 V rated value":"3 A","at 500 V rated value":"2 A","at 690 V rated value":"1 A","Instantaneous Contact":"3","For Auxiliary Contacts":"0","Make-Before-Break Switching":"0","Closing power of magnet coil at DC":"3.2 W","Holding power of magnet coil at DC":"3.2 W","Operating current at AC-12 maximum":"10 A","Surge voltage resistance rated value":"6 kV","Reference code acc. to DIN EN 61346-2":"K","Reference code acc. to DIN EN 81346-2":"K","with low demand rate acc. to SN 31920":"40 %","With Degree Of Pollution 3 Rated Value":"690 V","with high demand rate acc. to SN 31920":"75 %","Finely Stranded With Core End Processing":"2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²)","at AWG conductors for auxiliary contacts":"2x (20 ... 16), 2x (18 ... 14), 1x 12","Contact reliability of auxiliary contacts":"1 faulty switching per 100 million (17 V, 1 mA)","For Auxiliary And Control Current Circuit":"screw-type terminals","Of Auxiliary Contacts Instantaneous Contact":"0","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","Of The Contactor With Added Auxiliary Switch Block Typical":"10 000 000","For Short-Circuit Protection Of The Auxiliary Switch Required":"fuse gL/gG: 10 A","Of The Contactor With Added Electronics-Compatible Auxiliary Switch Block Typical":"5 000 000"}},"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=171452&mlfb=3RH1131-1BE40","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RH1131-1BE40/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3RH1131-1BE40 and get a price?","answer":"This part is sourced to order against an RFQ through independent distribution. Submit a quote request for current availability and pricing."},{"question":"What is the closest functional second-source to 3RH1131-1BE40?","answer":"The 3RT1015-1BB42 is a power contactor in the same SIRIUS S00 frame, not an auxiliary contactor. It shares the same mounting footprint and terminal layout but carries main contacts instead of auxiliary contacts. For a direct auxiliary-contactor substitute, stay within the 3RH1 S00 family."},{"question":"What is 3RH1131-1BE40's depth?","answer":"72 mm. That's the dimension from the mounting surface to the front of the device, which fits standard 80 mm deep enclosures with room for wiring."},{"question":"What solid wire sizes does 3RH1131-1BE40 accept?","answer":"Each terminal accepts 2x (0.5...1.5 mm²), 2x (0.75...2.5 mm²), or 2x 4 mm² solid conductors. Use ferruled stranded wire at the larger cross-sections."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RH1131-1BE40","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/3RH1131-1BE40 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}}