{"product_id":"siemens-lj63b500","title":"Siemens LJ63B500 500A 3-Pole 600 V Circuit Breaker","description":"\u003cdiv\u003e\n\u003cp\u003e\u003cstrong\u003eSiemens LJ63B500\u003c\/strong\u003e is a heavy-duty 3-pole circuit breaker rated for 500 A, designed to protect three‑phase power systems at up to 600 V. With its robust construction and Siemens engineering, it provides fast, reliable interruption of fault currents to safeguard motors, drives, and critical electrical infrastructure.\u003c\/p\u003e \u003ch3\u003eWhy this matters\u003c\/h3\u003e\n\u003cp\u003eIn three‑phase networks, a single fault can affect multiple lines at once. This LJ63B500 ensures all three phases disconnect together, maintaining system balance and preventing damage from phase-to-phase faults or short circuits. The 500 A rating supports high‑demand loads common in industrial settings, while the 600 V limit aligns with typical commercial and industrial power distribution.\u003c\/p\u003e \u003ch3\u003eKey features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCurrent rating:\u003c\/strong\u003e 500 A\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePoles:\u003c\/strong\u003e 3 (three-phase protection)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVoltage rating:\u003c\/strong\u003e 600 V\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart number:\u003c\/strong\u003e LJ63B500\u003c\/li\u003e\n\u003cli\u003eDesigned to integrate with Siemens-compatible panels and distribution gear\u003c\/li\u003e\n\u003cli\u003eProvides overcurrent and short-circuit protection for high-value equipment\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eIdeal use cases\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eIndustrial plants with heavy three-phase motors and conveyors\u003c\/li\u003e\n\u003cli\u003ePower distribution feeders in manufacturing lines and HVAC systems\u003c\/li\u003e\n\u003cli\u003eData centers or mission-critical facilities using Siemens panel architectures\u003c\/li\u003e\n\u003cli\u003eElectrical contractors selecting main or feeder breakers for Siemens installations\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003ePractical considerations\u003c\/h3\u003e\n\u003cp\u003eTo ensure proper operation, verify compatibility with your Siemens panel or switchgear, and adhere to local electrical codes during installation. This 3-pole device is intended as a main or feeder protection solution for three-phase circuits where high-current interruption is required. Replacement or maintenance should follow standard electrical safety procedures and be performed by qualified personnel.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Siemens","offers":[{"title":"Default Title","offer_id":46423122673826,"sku":"LJ63B500","price":510.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/siemens-lj63b500-500a-3-pole-600-v-circuit-breaker-600.webp?v=1789272451","url":"https:\/\/www.ampstate.com\/products\/siemens-lj63b500","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}