{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RH2911-2GA04","brand":"Siemens","brandSlug":"siemens","productSlug":"3RH2911-2GA04","canonicalUrl":"https://aoctrl.com/siemens/3RH2911-2GA04","factsUrl":"https://aoctrl.com/api/mcp/products/3RH2911-2GA04","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RH2911-2GA04 auxiliary switch block, 4 NC contacts, spring-loaded terminals, snap-on mounting, 10 A rated, AC-15 1 A at 690 V, IP20 front.","salesMarkdown":"## What this auxiliary switch block does The 3RH2911-2GA04 is a front-mounted auxiliary switch block for Siemens SIRIUS contactor relays, adding four normally-closed (NC) contacts to the relay base. It snaps onto the front of 3RH2140 and 3RH2440 contactor relays, physically coded per EN 50011 to prevent mismating. Rated for a maximum continuous current of 10 A, with AC-15 switching capacity of 1 A at 690 V — sufficient for most PLC and relay coil loads in control panels. The contact reliability spec (1 faulty switching per 100 million operations at 17 V, 1 mA) means it handles dry switching without stutter. ## Termination and wiring Spring-loaded terminals accept 2x (0.5... 1.5 mm²) with ferrule or 2x (0.5... 2.5 mm²) without ferrule — the push-in grip holds solid and stranded wire without retightening. AWG equivalent is 2x (20... 14). Snap-on mounting to the contactor relay front saves DIN-rail space — no additional rail footprint beyond the relay itself. The 36 mm width and 47.7 mm depth keep the assembly compact inside a panel.","metaTitle":"Siemens 3RH2911-2GA04 SIRIUS Auxiliary Switch, 4 NC, 10 A","metaDescription":"Siemens 3RH2911-2GA04 SIRIUS auxiliary switch block, 4 NC contacts, 10 A rated, AC-15 1 A at 690 V. Spring-loaded terminals, snap-on mount.","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":"3RH2911-2GA04","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, 4 NC, 51/52, 61/62, 71/72, 81/82, current path: 1 NC, 1 NC, 1 NC, 1 NC, spring-loaded terminal, physically coded, only with contactor relays 3RH2140 and 3RH2440 combinable (according to EN 50011)","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","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":"0","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":"$7.39","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/f93008360536dd71c4586625f306b741.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=506030&mlfb=3RH2911-2GA04"},"ai":{"faq":[{"question":"What is the 3RH2911-2GA04 rated for at AC-15 duty?","answer":"At AC-15, the 3RH2911-2GA04 is rated 1 A at 690 V, with lower ratings at other voltages: 10 A at 24 V, 6 A at 230 V, and 0.5 A at 440 V."},{"question":"Does the 3RH2911-2GA04 come with spring-loaded terminals?","answer":"Yes, the auxiliary and control circuit connections are spring-loaded terminals (cage clamp style), accepting 2x (0.5... 1.5 mm²) with ferrule or 2x (0.5... 2.5 mm²) without."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RH2911-2GA04","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/3RH2911-2GA04 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}}