{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RH1131-1AN20","brand":"Siemens","brandSlug":"siemens","productSlug":"3RH1131-1AN20","canonicalUrl":"https://aoctrl.com/siemens/3RH1131-1AN20","factsUrl":"https://aoctrl.com/api/mcp/products/3RH1131-1AN20","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RH1131-1AN20 auxiliary contactor, size S00, 3 NO contacts, 10 A AC-12 rated, 45 mm width, screw and snap-on mounting, IP20 front protection.","salesMarkdown":"## Auxiliary contactor for control-circuit switching The Siemens SIRIUS 3RH1131-1AN20 is an auxiliary contactor in size S00, carrying three normally-open (NO) instantaneous contacts rated 10 A at AC-12 (resistive load at 24 V). It is designed for switching control circuits — interlocks, signaling, and logic-level loads — in motor starter assemblies and distribution panels. The 45 mm width and screw-and-snap-on mounting let it land on standard DIN rail alongside its matching power contactor. The 3 NO contacts are rated across the voltage band: 10 A at 24 V (AC-12), 6 A at 230 V, 3 A at 400 V, and 1 A at 690 V. At 110 V DC the contacts are rated 1 A; at 220 V DC they drop to 0.27 A. These are the interrupting limits for the auxiliary circuit — not motor-load current. The contacts are instantaneous only; there are no leading, delayed, or lagging switching options on this variant. Mounts by screw or snap-on to DIN rail. Shock resistance is rated 10g / 5 ms and 5g / 10 ms. ## Wiring and enclosure protection Terminals accept solid conductors: 2x (0.5 to 1.5 mm²), 2x (0.75 to 2.5 mm²), or 2x 4 mm². Side clearances are 0 mm — no additional spacing needed between units on the rail.","metaTitle":"Siemens SIRIUS 3RH1131-1AN20 Auxiliary Contactor, 3 NO, Size","metaDescription":"Siemens SIRIUS 3RH1131-1AN20 auxiliary contactor, 3 NO contacts, size S00, rated 10 A AC-12. 45 mm wide, screw and snap-on mounting. Active lifecycle, sourced to order.","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 50 Hz":"0.8 ... 1.1","at 60 Hz":"0.85 ... 1.1","At The Side":"0 mm","On The Front":"IP20","1 Rated Value":"50 Hz","2 Rated Value":"60 Hz","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","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 50 Hz rated value":"220 V","at 500 V rated value":"2 A","at 60 Hz rated value":"220 V","at 690 V rated value":"1 A","Instantaneous Contact":"3","For Auxiliary Contacts":"0","Make-Before-Break Switching":"0","Operating current at AC-12 maximum":"10 A","Surge voltage resistance rated value":"6 kV","Reference code acc. to DIN EN 81346-2":"K","with low demand rate acc. to SN 31920":"40 %","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","Apparent holding power of magnet coil at AC":"4.6 V·A","Apparent pick-up power of magnet coil at AC":"27 V·A","Of Auxiliary Contacts Instantaneous Contact":"0","Number of NC contacts for auxiliary contacts":"1","Number of NO contacts for auxiliary contacts":"3","with degree of pollution 3 at AC rated value":"690 V","Type of voltage of the control supply voltage":"AC","Inductive power factor with closing power of the coil":"0.8","Identification number and letter for switching elements":"31 E","Inductive power factor with the holding power of the coil":"0.27","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=448420&mlfb=3RH1131-1AN20","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RH1131-1AN20/alternatives.json"},"ai":{"faq":[{"question":"What is the 3RH1131-1AN20 used for?","answer":"It is an auxiliary contactor with 3 NO contacts rated 10 A AC-12, used for switching control circuits such as interlocks, signaling, and logic-level loads in motor starter assemblies and distribution panels."},{"question":"Where can I buy the 3RH1131-1AN20?","answer":"The part is sourced and quoted to order against an RFQ through independent distribution, with availability and current pricing confirmed at quote time."},{"question":"What are the key specifications of the 3RH1131-1AN20?","answer":"Key specs: size S00, 3 NO contacts, 10 A at AC-12 (24 V), 45 mm width, screw and snap-on mounting, IP20 front protection, operating temperature -25 to +60 °C, pollution degree 3."},{"question":"Does the 3RH1131-1AN20 have DC ratings?","answer":"Yes, the contacts are rated 1 A at 110 V DC and 0.27 A at 220 V DC."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RH1131-1AN20","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/3RH1131-1AN20 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}}