{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RH2911-2XA31-0MA0","brand":"Siemens","brandSlug":"siemens","productSlug":"3RH2911-2XA31-0MA0","canonicalUrl":"https://aoctrl.com/siemens/3RH2911-2XA31-0MA0","factsUrl":"https://aoctrl.com/api/mcp/products/3RH2911-2XA31-0MA0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RH2911-2XA31-0MA0, auxiliary switch block, 3 NO + 1 NC, spring-loaded terminals, snap-on mounting, for 3RT2 contactors and 3RH2 contactor relays, 10 A max, IP20 front.","salesMarkdown":"The Siemens 3RH2911-2XA31-0MA0 is a front-mounted auxiliary switch block for the SIRIUS 3RT2 contactor and 3RH2 contactor relay family. It provides 3 normally-open and 1 normally-closed contact path, wired via spring-loaded terminals — no screw torque, no re-tightening on a vibration-prone panel. It snaps onto the front of the contactor or relay without tools, occupying 36 mm width and adding 47.7 mm depth to the assembly. The IP20 front protection is standard for enclosed panel gear; the open side is covered by the host device. ## Current-carrying capability by voltage and duty The contacts are rated for a maximum of 10 A. The actual continuous current depends on the circuit voltage: at 24 V it carries 10 A (resistive) or 6 A (AC-15 inductive); at 230 V the AC-15 rating is 6 A; at 400 V it drops to 3 A. For DC switching the ratings are lower — 6 A at 24 V, 2 A at 60 V, 1 A at 110 V, 0.3 A at 220 V — reflecting the arc-extinction challenge on DC loads. The AC-15 rating at 690 V is 1 A, which covers control-circuit switching in 690 V line-fed panels. The insulation voltage is 690 V at pollution degree 3, and the rated surge withstand is 6 kV — coordination class for industrial environments with moderate transient exposure. ## Contact reliability and mechanical endurance Spring-loaded terminals accept 2 x 0.5 to 1.5 mm² with ferruled ends, or 2 x 0.5 to 2.5 mm² solid/stranded without ferrules. AWG equivalent is 2 x 20 to 14. The cage clamp holds firmly — no periodic re-torque needed on a line subject to thermal cycling.","metaTitle":"Siemens 3RH2911-2XA31-0MA0 Auxiliary Switch, 3NO+1NC, Spring","metaDescription":"Siemens SIRIUS auxiliary switch for 3RT2/3RH2 contactors. 3 NO + 1 NC, spring-loaded terminals, snap-on mounting. Rated 10 A max, 690 V insulation. Current production. Available to","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Contactors"],"specifications":{"Note":"with 3RH2","Depth":"47.7 mm","Width":"36 mm","title":"3RH2911-2XA31-0MA0","Height":"41.5 mm","Maximum":"10 A","at 24 V":"6 A","at 60 V":"2 A","at 110 V":"1 A","at 125 V":"6 A","at 220 V":"0.3 A","at 230 V":"6 A","at 250 V":"6 A","at 400 V":"3 A","description":"auxiliary switch, on the front, 3 NO + 1 NC, 53/54, 61/62, 73/74, 83/84, current path: 1 NO, 1 NC, 1 NO, 1 NO, spring-loaded terminal, for contactors 3RT2 and contactor relays 3RH2","During Storage":"-55 ... +80 °C","Leading Contact":"0","lifecycle_stage":"current","During Operation":"-25 ... +60 °C","Fastening Method":"snap-on mounting","Lagging Switching":"0","Product Brand Name":"SIRIUS","Suitability For Use":"Contactor relay and power contactor","at 24 V rated value":"10 A","at 60 V rated value":"4.7 A","at 110 V rated value":"3 A","at 220 V rated value":"1.2 A","at 440 V rated value":"0.5 A","at 600 V rated value":"0.26 A","Instantaneous Contact":"3","With Core End Processing":"2x (0.5 ... 1.5 mm²)","Without Core End Processing":"2x (0.5 ... 2.5 mm²)","at AC-15 at 690 V rated value":"1 A","protection class IP on the front":"IP20","Surge Voltage Resistance Rated Value":"6 kV","at AWG cables for auxiliary contacts":"2x (20 ... 14)","Contact Reliability Of Auxiliary Contacts":"1 faulty switching per 100 million (17 V, 1 mA)","Mechanical Service Life (Operating Cycles) Typical":"10 000 000","Type Of Electrical Connection For Auxiliary And Control Circuit":"spring-loaded terminals","insulation voltage with degree of pollution 3 at AC rated value":"690 V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$7.21","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/d556d7b5bc9760468fa30c7eb29aa20a.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=314836&mlfb=3RH2911-2XA31-0MA0"},"ai":{"faq":[{"question":"What is the closest functional alternative if 3RH2911-2XA31-0MA0 is unavailable?","answer":"The most direct functional match is another front-mounted auxiliary switch block for the same 3RT2/3RH2 platform with the same contact configuration (3 NO + 1 NC) and spring-loaded terminals. The terminal arrangement and contact sequence must be verified against the panel wiring — the contact path labeling (53/54, 61/62, 73/74, 83/84) is standard for this form factor."},{"question":"Where can I buy 3RH2911-2XA31-0MA0?","answer":"This part is sourced and quoted to order against an RFQ through independent industrial-automation distribution. Availability and current pricing are confirmed at quote time — no stock count or price figure is published here."},{"question":"What does the note 'with 3RH2' mean on this component?","answer":"It indicates this auxiliary switch is designed for use with the 3RH2 contactor relay series, as well as the 3RT2 power contactor series. The mounting interface and contact sequence are shared across both families."},{"question":"What is the depth of 3RH2911-2XA31-0MA0?","answer":"The depth is 47.7 mm measured from the mounting face of the host contactor or relay. Width is 36 mm and height is 41.5 mm."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RH2911-2XA31-0MA0","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/3RH2911-2XA31-0MA0 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:51:03.652Z","lastPublished":"2026-08-11T15:51:03.652Z","indexable":true}}