{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RH2911-1HA20-ZW98","brand":"Siemens","brandSlug":"siemens","productSlug":"3RH2911-1HA20-ZW98","canonicalUrl":"https://aoctrl.com/siemens/3RH2911-1HA20-ZW98","factsUrl":"https://aoctrl.com/api/mcp/products/3RH2911-1HA20-ZW98","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS auxiliary switch, front-mounted, 2 NO, 10 A maximum, screw terminals, snap-on mounting, for 3RT2 contactors and 3RH2 contactor relays, multi-unit packaging of 60.","salesMarkdown":"The Siemens 3RH2911-1HA20-ZW98 is a front-mounted auxiliary switch block from the SIRIUS family, designed to snap onto 3RT2 power contactors and 3RH2 contactor relays. It adds two normally-open (2 NO) instantaneous contacts — the kind you need for status feedback or enable signals in a motor control center. Rated for 10 A maximum and 690 V insulation class (degree of pollution 3), it carries a 6 kV surge withstand. That means it lives comfortably in the same panel as a 400 V drive or a 480 V motor branch — no extra coordination needed for the auxiliary circuit. Snap-on mounting and screw terminals for 2x (0.5 to 1.5 mm²) or 2x (0.75 to 2.5 mm²) solid/stranded — a wireman can land it in under a minute. This block carries two sets of ratings: the maximum thermal current (10 A) and the AC-15 switching capacity at various voltages. The AC-15 rating at 690 V is 1 A — that's the inductive load capability for solenoid valves or contactor coils at line voltage. The 10 A figure is what you'd see on a resistive or lightly inductive auxiliary circuit at lower voltages. For DC switching, the voltage-specific ratings tell the story: 6 A at 24 V, 3 A at 110 V, 0.3 A at 220 V. If you're routing a 24 VDC sensor supply through these contacts, you've got headroom to 6 A per contact. At 220 VDC the current drops to 0.3 A — that's a real constraint for DC coil circuits at higher voltages. Mechanical life is 10 million switching cycles typical, and contact reliability is 1 faulty switching per 100 million operations at 17 V, 1 mA. That's the spec for low-level signal switching — it tells you the contacts are clean enough for PLC inputs without wetting current issues.","metaTitle":"Siemens 3RH2911-1HA20-ZW98 SIRIUS Auxiliary Switch, 2 NO, 10","metaDescription":"Siemens SIRIUS auxiliary switch 3RH2911-1HA20-ZW98 for 3RT2/3RH2 contactors. 2 NO front-mounted, 10 A max, AC-15 1 A at 690 V, IP20, snap-on. Active lifecycle, sourced to order. Re","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Contactors"],"specifications":{"Note":"with 3RH2","Depth":"43.7 mm","Width":"36 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","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":"2","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=333171&mlfb=3RH2911-1HA20-ZW98","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RH2911-1HA20-ZW98/alternatives.json"},"ai":{"faq":[{"question":"What is 3RH2911-1HA20-ZW98 used for?","answer":"It's a front-mounted auxiliary switch block that adds 2 normally-open contacts to Siemens 3RT2 contactors and 3RH2 contactor relays, typically for status feedback or control logic in motor control panels."},{"question":"What are the key ratings of 3RH2911-1HA20-ZW98?","answer":"Maximum thermal current 10 A, AC-15 switching capacity 1 A at 690 V, insulation voltage 690 V, surge withstand 6 kV, mechanical life 10 million cycles, IP20 front protection."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RH2911-1HA20-ZW98","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/3RH2911-1HA20-ZW98 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}}