{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RH2911-2HA30","brand":"Siemens","brandSlug":"siemens","productSlug":"3RH2911-2HA30","canonicalUrl":"https://aoctrl.com/siemens/3RH2911-2HA30","factsUrl":"https://aoctrl.com/api/mcp/products/3RH2911-2HA30","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS auxiliary switch block, 3RH2911-2HA30, 3 NO, 10 A, spring-loaded terminals, snap-on mounting for 3RT2 contactors and 3RH2 contactor relays.","salesMarkdown":"It gives you three normally open (NO) auxiliary contacts, each rated for 10 A maximum, in a compact 36 mm wide package that clips onto the contactor without extra hardware. This isn't a standalone relay — it's a bolt-on contact block for the SIRIUS line. The spring-loaded terminals accept 2x (0.5... 1.5 mm²) with ferrules or 2x (0.5... 2.5 mm²) solid, which saves the panel wireman a screwdriver turn on every termination. The headline 10 A maximum is the thermal current (Ith) — what the contacts can carry continuously in a resistive load. But the real-world switching limit depends on voltage and duty. At 24 V DC the contacts are rated for 6 A inductive; at 110 V DC that drops to 1 A. For AC control circuits you get 10 A at 230 V AC, and at AC-15 duty (solenoid valves, contactor coils) at 690 V the rating is 1 A. Mechanical life is 10 million cycles typical, which outlasts most contactors it'll ride on. Snap-on mounting means zero tools for installation — push it onto the contactor front and it locks. The depth is 47.7 mm, which sits within the envelope of the base contactor; no extra DIN rail space is consumed.","metaTitle":"Siemens 3RH2911-2HA30 SIRIUS Auxiliary Switch Block, 3 NO, 1","metaDescription":"Siemens SIRIUS 3RH2911-2HA30 auxiliary switch block. 3 NO contacts, 10 A max, spring-loaded terminals, snap-on mount for 3RT2/3RH2 contactors. Rated AC-15 at 690 V. Active producti","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","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","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":"$5.85","priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=290808&mlfb=3RH2911-2HA30","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RH2911-2HA30/alternatives.json"},"ai":{"faq":[{"question":"What is the closest functional alternative to the 3RH2911-2HA30?","answer":"The 3RH2422-1AB00 is a similar auxiliary contact block but from a different SIRIUS sub-family. The 3RH2911-2HA30 is designed specifically for the 3RT2/3RH2 contactor platform, while the 3RH2422-1AB00 fits the 3RT1/3RH1 platform. They are not mechanically interchangeable without changing the base contactor."},{"question":"What does the note 'with 3RH2' mean?","answer":"The note indicates this auxiliary switch block is designed to mount on the front of 3RH2 contactor relays, as well as 3RT2 power contactors. It's a compatibility marker for the SIRIUS platform."},{"question":"What are the key ratings of the 3RH2911-2HA30?","answer":"Maximum thermal current is 10 A. AC-15 rating at 690 V is 1 A. DC switching at 24 V is 6 A. Insulation voltage is 690 V with pollution degree 3. Surge voltage resistance is 6 kV. Mechanical life is 10 million cycles."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RH2911-2HA30","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/3RH2911-2HA30 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}}