{"product_id":"siemens-hhld63b350-circuit-breaker","title":"Siemens | HHLD63B350 | Circuit Breaker | 350A | 3-Pole | 600V","description":"\u003cdiv\u003e\n\u003cp\u003eThe Siemens \u003cstrong\u003eHHLD63B350\u003c\/strong\u003e circuit breaker is a robust, high-current protection device designed for demanding electrical environments. Rated at \u003cstrong\u003e350 A\u003c\/strong\u003e with a \u003cstrong\u003e3-pole\u003c\/strong\u003e configuration and a maximum operating voltage of \u003cstrong\u003e600 V\u003c\/strong\u003e, it’s built to safeguard large three-phase circuits, motor feeders, and distribution panels in industrial settings.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eAmperage\u003c\/strong\u003e: 350 A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePoles\u003c\/strong\u003e: 3-Pole\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVoltage\u003c\/strong\u003e: 600 V\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eUse case\u003c\/strong\u003e: Circuit breaker for maintenance, retrofit, and replacement where exact specs are required\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eReference\u003c\/strong\u003e: Part number HHLD63B350 is the most reliable compatibility guide\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eWhy this Siemens device stands out\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003ePrecise compatibility\u003c\/strong\u003e: The HHLD63B350 is designed to match Siemens panels and gear that require a 350 A, 3-pole, 600 V breaker—reducing the guesswork during retrofit or replacement.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eBalanced protection for 3-phase systems\u003c\/strong\u003e: The 3-pole construction ensures synchronized protection across all phases, helping prevent uneven fault conditions that can stress motors and feeders.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eProven reliability for demanding workloads\u003c\/strong\u003e: Built to handle high-current demands typical of industrial environments, helping to minimize downtime and protect valuable equipment.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eFit and compatibility guidance\u003c\/strong\u003e: Before ordering, confirm fit and ratings directly against your panel documentation. The part number \u003cem\u003eHHLD63B350\u003c\/em\u003e serves as the clearest reference for compatibility, ensuring the device matches both the electrical characteristics and mounting\/interface requirements of your installation.\u003c\/p\u003e \u003cp\u003eIdeal use scenarios\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eNew installations in industrial control panels requiring \u003cstrong\u003e350 A, 3-pole, 600 V\u003c\/strong\u003e protection\u003c\/li\u003e \u003cli\u003eRetrofits where upgrading to higher-current distribution is needed while maintaining Siemens compatibility\u003c\/li\u003e \u003cli\u003eReplacement for legacy breakers in Siemens-compatible systems to restore proper protection\u003c\/li\u003e \u003cli\u003eMotor feeder circuits and other 3-phase loads up to 600 V in commercial or industrial facilities\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003ePractical installation considerations\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eEnsure the panel is de-energized and follow all safety protocols during replacement or installation\u003c\/li\u003e \u003cli\u003eVerify torque specifications and terminal integrity to maintain reliable interruption performance\u003c\/li\u003e \u003cli\u003eKeep documentation and the part number handy for future maintenance and cross-referencing\u003c\/li\u003e \u003cli\u003eConsult your facility’s electrical schematic or manufacturer guidelines to confirm this exact model fits your system\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Siemens","offers":[{"title":"Default Title","offer_id":46427486453922,"sku":"HHLD63B350","price":45277.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/siemens-hhld63b350-circuit-breaker-350a-3-pole-600v-673.webp?v=1789730078","url":"https:\/\/www.ampstate.com\/products\/siemens-hhld63b350-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}