{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SQ2170-2YA63","brand":"Siemens","brandSlug":"siemens","productSlug":"5SQ2170-2YA63","canonicalUrl":"https://aoctrl.com/siemens/5SQ2170-2YA63","factsUrl":"https://aoctrl.com/api/mcp/products/5SQ2170-2YA63","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON, miniature circuit breaker, 1-pole, C-curve 63 A, 240 V AC, 3 kA per EN 60898, IP20, 55 mm depth, 1 MW unit.","salesMarkdown":"## What this 1-pole C63A MCB does for a panel The Siemens 5SQ2170-2YA63 is a 1-pole miniature circuit breaker from the SENTRON 5SQ series, rated 63 A with a C-curve trip characteristic. It protects a single 240 V AC phase against overcurrent and short-circuit faults, breaking up to 3 kA per EN 60898 — enough for most residential and light commercial sub-distribution boards. The C-curve (5–10× In magnetic trip) handles moderate inrush from small motors or transformers without nuisance tripping, while the 63 A continuous rating suits a high-current final subcircuit or a main incomer on a small panel. 63 A continuous at 240 V AC means this breaker can carry a full 15 kVA resistive load on a single phase. Energy limitation class 3 means it lets through less let-through energy than class 1 or 2, reducing arc flash and downstream component stress during a fault.","metaTitle":"Siemens 5SQ2170-2YA63 SENTRON MCB, 1P C63A 3kA","metaDescription":"Siemens SENTRON 5SQ2170-2YA63 miniature circuit breaker, 1-pole, C-curve, 63 A, 240 V AC, 3 kA breaking capacity per EN 60898. Current production. Quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["1-Pole MCB (DIN Rail)"],"specifications":{"Number Of Poles":"1","Type Of Voltage":"AC/DC","lifecycle_stage":"current","Installation Depth":"55 mm","Product Brand Name":"SENTRON","Degree Of Pollution":"3","Product Designation":"Miniature circuit breaker","protection class IP":"IP20","Overvoltage Category":"3","Design Of The Product":"Miniature circuit breaker 5SQ","Number Of Poles / Note":"1P","Energy Limitation Class":"3","Number Of Modular Width Units":"1","Tripping Characteristic Class":"C","acc. to EN 60898 / rated value":"3 kA","supply voltage / at AC / rated value":"240 V","Supply Voltage Frequency / Rated Value":"50 Hz","operational current / at AC / rated value":"63 A","Product Function / Neutral Conductor Switching":"No"}},"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=183097&mlfb=5SQ2170-2YA63","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SQ2170-2YA63/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 5SQ2170-2YA63 and what is the lead time?","answer":"Available through independent distribution, quoted to order against an RFQ. Availability and current pricing are confirmed at quote time — no stock count or lead-time number is published here."},{"question":"Will 5SQ2170-2YA63 drop into a panel specified around 5SQ2370-2YA04 without rewiring?","answer":"No — the 5SQ2370-2YA04 is a 3-pole, 4 A, 400 V breaker, while the 5SQ2170-2YA63 is a 1-pole, 63 A, 240 V unit. The mechanical footprint (55 mm depth, DIN rail) is the same, but the pole count, current rating, and voltage differ, so rewiring is required."},{"question":"What is the number of poles and voltage type for 5SQ2170-2YA63?","answer":"It is a 1-pole (1P) breaker rated for AC/DC operation, with a rated AC supply voltage of 240 V at 50 Hz."},{"question":"What compliance documentation does Siemens provide for 5SQ2170-2YA63?","answer":"The part is designed and tested to EN 60898 (3 kA breaking capacity). Siemens typically provides a Declaration of Conformity covering the applicable EU directives; specific RoHS, REACH, or UL documentation should be confirmed against the factory certificate at time of order."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SQ2170-2YA63","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/5SQ2170-2YA63 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}}