{"product_id":"siemens-hkb3b900-circuit-breaker","title":"Siemens | HKB3B900 | Circuit Breaker | 900A | 3-Pole | 600V","description":"\u003cdiv\u003e\n\u003cp\u003eMeet the Siemens HKB3B900 circuit breaker — a purpose-built, high-capacity protection device engineered for demanding industrial applications. With a robust 900A rating, 3-pole design, and a 600V operating envelope, this unit is designed to reliably interrupt fault currents and protect downstream equipment in serious load environments.\u003c\/p\u003e \u003cp\u003eThe HKB3B900 is an ideal solution for maintenance, retrofit, and replacement projects where exact specifications matter. When you need a component that aligns with existing gear and panelboards, this Siemens breaker offers a precise fit and proven performance to minimize downtime and keep systems running smoothly.\u003c\/p\u003e \u003ch3\u003eKey features and benefits\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003e900A amperage rating\u003c\/strong\u003e delivers strong, dependable protection for high-load circuits and essential feeders.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e3-Pole configuration\u003c\/strong\u003e provides comprehensive phase protection and coordinated shutdown across all conductors.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e600V maximum voltage\u003c\/strong\u003e supports a wide range of industrial panelboards and switchgear assemblies.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eManufacturer-backed reliability\u003c\/strong\u003e from Siemens ensures compatibility with other Siemens components and diagnostic ecosystems.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eReplacement and retrofit ready\u003c\/strong\u003e designed for projects where exact part numbers and specifications are required to match existing infrastructure.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWhy this unit stands apart\u003c\/h3\u003e\n\u003cp\u003eUnlike lower-capacity or generic breakers, the HKB3B900 is built to handle the demands of industrial environments. Its 3-pole, 600V profile is tailored for main-disconnect and feeder roles in switchgear and panelboards, enabling clean, predictable protection for heavy loads. This isn’t a one-size-fits-all breaker; it’s a targeted solution for systems where spec accuracy and long-term reliability matter most.\u003c\/p\u003e \u003ch3\u003eIdeal use cases\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eRetrofits in existing Siemens or compatible panelboards where the HKB3B900’s ratings align with current equipment.\u003c\/li\u003e \u003cli\u003eMaintenance replacements that require exact match to avoid re-engineering bus configurations or mounting styles.\u003c\/li\u003e \u003cli\u003eHigh-load feeder protection in industrial facilities, manufacturing lines, and large mechanical systems.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eCompatibility and ordering notes\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eImportant compatibility tip:\u003c\/strong\u003e confirm fit and ratings before ordering. The part number is your best reference for compatibility, so verify the HKB3B900 designation against your panel labeling and service documentation.\u003c\/p\u003e \u003ch3\u003ePractical installation and care tips\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eVerify electrical clearances and mounting orientation to ensure proper heat dissipation and safe operation.\u003c\/li\u003e \u003cli\u003eConsult your system drawings to align the breaker's trip and interrupting ratings with protection coordination plans.\u003c\/li\u003e \u003cli\u003eKeep a spare HKB3B900 in stock for planned maintenance or controlled replacements to minimize downtime.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eFor professionals upgrading or maintaining industrial power distribution, the Siemens HKB3B900 900A, 3-Pole, 600V circuit breaker offers a precise, trustworthy solution that aligns with established specs while delivering durable performance in challenging environments.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Siemens","offers":[{"title":"Default Title","offer_id":46427075281058,"sku":"HKB3B900","price":510.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/master_generic_a0994f42-7fad-49d1-911a-c2784022b8c9.png?v=1765492979","url":"https:\/\/www.ampstate.com\/products\/siemens-hkb3b900-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}