{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RH1911-1GA31-ZW96","brand":"Siemens","brandSlug":"siemens","productSlug":"3RH1911-1GA31-ZW96","canonicalUrl":"https://aoctrl.com/siemens/3RH1911-1GA31-ZW96","factsUrl":"https://aoctrl.com/api/mcp/products/3RH1911-1GA31-ZW96","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS auxiliary switch block, 3RH1911-1GA31-ZW96, 3 NO + 1 NC, 10 A, screw terminals, snap-on mounting for contactor relays.","salesMarkdown":"The Siemens SIRIUS 3RH1911-1GA31-ZW96 is a 4-pole auxiliary switch block with 3 normally open and 1 normally closed contact, designed for use with contactor relays and power contactors in the SIRIUS family. It mounts via snap-on fastening onto a 35 mm DIN rail, occupying a 36.5 mm wide footprint with a depth of 41.5 mm and height of 37.5 mm, making it suitable for dense panel layouts where space is constrained. The block carries a maximum continuous current of 10 A, but the actual switching capacity depends on the circuit voltage. At 24 V AC/DC it handles 6 A; at 125 V it also handles 6 A; at 230 V it handles 6 A; at 250 V it handles 6 A. For higher voltages the rating drops: 3 A at 400 V, 0.3 A at 220 V, and 0.26 A at 600 V. These are the make-and-break limits for the auxiliary contacts — important for sizing control circuits, especially when switching inductive loads like contactor coils or solenoid valves at higher voltages. ## Wiring and connection details Connection is via screw-type terminals, accepting 2x (0.5 to 1.5 mm²) or 2x (0.75 to 2.5 mm²) with core end processing, or 2x (20 to 16 AWG) or 2x (18 to 14 AWG) for stranded wire. These ratings confirm the block is qualified for installation in standard industrial control panels where overvoltage transients are expected.","metaTitle":"Siemens 3RH1911-1GA31-ZW96 Auxiliary Switch Block, 3 NO + 1","metaDescription":"Siemens SIRIUS 3RH1911-1GA31-ZW96 auxiliary switch block, 3 NO + 1 NC, rated 10 A, snap-on mounting. Phased-out; successor is SIRIUS 3RH2. 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","During Storage":"-55 ... +80 °C","lifecycle_stage":"current","During Operation":"-25 ... +60 °C","Fastening Method":"snap-on mounting","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), 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 cables 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","Type Of Electrical Connection For Auxiliary And Control Circuit":"screw-type terminals","insulation voltage with degree of pollution 3 at AC rated value":"690 V"}},"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=517282&mlfb=3RH1911-1GA31-ZW96","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RH1911-1GA31-ZW96/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3RH1911-1GA31-ZW96 and get a price?","answer":"This part is sourced to order against an RFQ through independent distribution channels. Submit a request for quotation; availability and current pricing will be confirmed at quote time."},{"question":"What is the closest functional second-source to 3RH1911-1GA31-ZW96?","answer":"The manufacturer's official successor is the SIRIUS 3RH2 series (e.g., 3RH2140-1BP40). The 3RH2 is a 4-pole auxiliary contactor with similar ratings (10 A at 24 V, same 690 V insulation voltage) but a larger footprint — 45 mm wide, 73 mm deep versus the 3RH1911's 36.5 mm by 41.5 mm. Panel cutouts and DIN rail spacing must be verified before substitution."},{"question":"What is the 3RH1911-1GA31-ZW96's note 'with 3RH1'?","answer":"The note indicates this auxiliary switch block is designed for use with 3RH1 contactor relays in the SIRIUS family. It is not a standalone contactor but an add-on block that mounts onto the relay or power contactor."},{"question":"Will 3RH1911-1GA31-ZW96 drop into a panel specified around 3RH2140-1BP40?","answer":"Not without verifying the mounting. The 3RH1911 is 36.5 mm wide and 41.5 mm deep, while the 3RH2140 is 45 mm wide and 73 mm deep. Both snap onto 35 mm DIN rail, but the larger 3RH2140 will not fit the same DIN space or panel cutout designed for the 3RH1911. Rewiring is not required — both use screw terminals — but physical clearance must be checked."},{"question":"What compliance documentation does Siemens provide for 3RH1911-1GA31-ZW96?","answer":"The part carries Siemens SIRIUS branding and is designed to IEC/EN standards for insulation (690 V, pollution degree 3) and surge voltage (6 kV). The manufacturer typically provides RoHS and REACH declarations, as well as UL/CSA certification on request. Specific documentation should be confirmed at time of order."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RH1911-1GA31-ZW96","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/3RH1911-1GA31-ZW96 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}}