{"product_id":"siemens-5sy4163-8","title":"Siemens 5SY4163-8 63A 1-Pole 400 V Circuit Breaker Potential Transformer","description":"\u003cdiv\u003e\n\u003cp\u003eMeet the Siemens 5SY4163-8, a durable circuit breaker engineered to protect your electrical installations with trustworthy precision. With a 63 A current rating, a single-pole design, and a 400 V rating, this device is built to perform reliably in modern distribution setups where safety and uninterrupted power matter.\u003c\/p\u003e \u003cp\u003eBuilt to integrate seamlessly into Siemens panel boards and distribution systems, the 5SY4163-8 delivers dependable overcurrent protection for single-phase circuits. Its robust construction and proven Siemens engineering mean you get consistent performance, minimal nuisance trips, and straightforward maintenance—essential for both new builds and thoughtful retrofits.\u003c\/p\u003e \u003cul\u003e \u003cli\u003ePart Number: 5SY4163-8\u003c\/li\u003e \u003cli\u003eCurrent rating: 63 A\u003c\/li\u003e \u003cli\u003ePoles: 1 (single-pole design for single-phase circuits)\u003c\/li\u003e \u003cli\u003eVoltage rating: 400 V\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eWho benefits from this breaker? electricians, facilities managers, and system integrators who need reliable, easy-to-specify protection for 400 V electrical networks. It’s an ideal choice for commercial or light-industrial panels where you require solid branch-circuit protection without compromising space or compatibility with established Siemens systems.\u003c\/p\u003e \u003cp\u003eKey benefits and outcomes you can expect:\u003c\/p\u003e \u003cul\u003e \u003cli\u003eReliable overcurrent protection that helps prevent damage to wiring, motors, and connected equipment\u003c\/li\u003e \u003cli\u003eClear, deterministic performance aligned with Siemens’ long-standing reputation for quality and compatibility\u003c\/li\u003e \u003cli\u003eEffortless replacement in existing Siemens installations, reducing downtime during service or upgrades\u003c\/li\u003e \u003cli\u003eCompact, space-efficient single-pole configuration suitable for dense panel layouts\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003ePractical use cases you’ll appreciate:\u003c\/p\u003e \u003cul\u003e \u003cli\u003eProtect single-phase circuits in 400 V distribution panels for offices, retail spaces, or light industrial facilities\u003c\/li\u003e \u003cli\u003eReplace worn or outdated breakers in Siemens 5SY-based installations to restore reliable protection\u003c\/li\u003e \u003cli\u003eIn new projects, specify the 5SY4163-8 when a 63 A, 1-pole solution is required for safe and compliant operation\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eWhy this Siemens breaker stands out from generic equivalents: it carries the Siemens engineering heritage, ensuring consistent trip characteristics, predictable behavior, and compatibility with a broad range of Siemens electrical infrastructure. For project teams aiming to minimize compatibility concerns and maintenance surprises, the 5SY4163-8 offers a straightforward, well-supported protection option that aligns with standard Siemens panels and accessories.\u003c\/p\u003e \u003cp\u003eInstallation and maintenance notes (practical tips):\u003c\/p\u003e \u003cul\u003e \u003cli\u003eVerify part number and ratings (5SY4163-8, 63 A, 1 pole, 400 V) before installation\u003c\/li\u003e \u003cli\u003eFollow local electrical codes and manufacturer guidelines during replacement or commissioning\u003c\/li\u003e \u003cli\u003eSchedule periodic inspections as part of routine panel maintenance to ensure continued reliable performance\u003c\/li\u003e \u003cli\u003eKeep the breaker within its specified voltage and current limits to avoid premature wear or nuisance trips\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eIn short, the Siemens 5SY4163-8 63A 1-Pole 400 V Circuit Breaker is a dependable, purpose-built protection device for single-phase 400 V networks. It combines Siemens reliability with practical, installer-friendly features, making it a smart, long-term choice for safeguarding electrical systems.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Siemens","offers":[{"title":"Default Title","offer_id":46423168876706,"sku":"5SY4163-8","price":232.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/siemens-5sy4163-8-63a-1-pole-400-v-circuit-breaker-potential-450.webp?v=1789278140","url":"https:\/\/www.ampstate.com\/products\/siemens-5sy4163-8","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}