{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RH1911-1HA01","brand":"Siemens","brandSlug":"siemens","productSlug":"3RH1911-1HA01","canonicalUrl":"https://aoctrl.com/siemens/3RH1911-1HA01","factsUrl":"https://aoctrl.com/api/mcp/products/3RH1911-1HA01","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RH1911-1HA01 auxiliary switch block, 4-pole, screw-type terminals, 10 A maximum, snap-on mounting for contactor relays and power contactors.","salesMarkdown":"Rated for 10 A maximum, with AC-15 switching capacity derated by voltage — 6 A at 24 V, 3 A at 110 V, 1.2 A at 220 V, and 0.26 A at 600 V — so the voltage on your control circuit determines the contact's actual current capability. Snap-on mounting means it clips directly onto the contactor's front without tools, keeping the panel layout tight and the wiring within the same screw-terminal pattern. The 10 A maximum is the thermal current (Ith); the real-world switching capacity is governed by the AC-15 duty ratings at your control voltage — at 24 V it handles 10 A, but at 440 V it drops to 0.5 A. That derating curve is what decides whether this block can handle your solenoid or contactor coil load. If you're switching PLC-level signals, this block handles them reliably. Mechanical service life is 10 million switching cycles typical — that's the mechanical endurance of the block itself, not the electrical endurance under load. Electrical life will be lower depending on the switched current and voltage. Screw-type terminals accept 2x (0.5 to 1.5 mm²) and 2x (0.75 to 2.5 mm²) with core-end processing, or 2x (20 to 16) and 2x (18 to 14) AWG. That covers standard control wiring without needing ferrules for the smaller strands. Dimensions are 36.5 mm wide, 37.5 mm tall, and 41.5 mm deep — that's the block itself, not counting the contactor it mounts on. Plan for the combined depth of the contactor plus this block when laying out the panel.","metaTitle":"Siemens 3RH1911-1HA01 SIRIUS Auxiliary Switch Block, 10 A","metaDescription":"Siemens 3RH1911-1HA01 SIRIUS auxiliary switch block, 4-pole, screw terminals, 10 A max. Phased-out; successor 3RH2911-1HA01. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Contactors"],"specifications":{"Note":"with 3RH1","Depth":"41.5 mm","Width":"36.5 mm","Height":"37.5 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","Mounting type":"snap-on mounting","During Storage":"-55 ... +80 °C","lifecycle_stage":"current","During Operation":"-25 ... +60 °C","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":"0","With Core End Processing":"2x (0.5 ... 1.5 mm²), 2x (0.75 ... 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 conductors for auxiliary contacts":"2x (20 ... 16), 2x (18 ... 14)","Contact reliability of auxiliary contacts":"1 faulty switching per 100 million (17 V, 1 mA)","Mechanical service life (switching cycles) typical":"10 000 000","Insulation voltage with degree of pollution 3 at AC rated value":"690 V","Type of electrical connection for auxiliary and control current circuit":"screw-type terminals"}},"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=131659&mlfb=3RH1911-1HA01","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RH1911-1HA01/alternatives.json"},"ai":{"faq":[{"question":"What replaces the 3RH1911-1HA01?","answer":"The official Siemens successor is the 3RH2911-1HA01. It is a SIRIUS auxiliary switch block with the same 4-pole configuration and screw terminals, designed as a drop-in replacement for the phased-out 3RH1911-1HA01."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RH1911-1HA01","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/3RH1911-1HA01 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}}