{"product_id":"hef437045-circuit-breaker","title":"HEF437045 | Circuit Breaker | 45A | 3-Pole | 480V","description":"\u003cdiv\u003e\n\u003cp\u003eMeet HEF437045, a robust industrial circuit breaker designed for maintenance, retrofit, and replacement projects where exact specifications matter. This 45A, 3-pole unit is built to perform reliably in 480V systems, delivering dependable protection for three-phase power infrastructure.\u003c\/p\u003e \u003cp\u003eWhy this part stands out is its precise compatibility. The part number HEF437045 serves as the strongest reference for matching mounting footprint, termination style, and electrical ratings—so you can swap in a like-for-like component with confidence and minimize downtime.\u003c\/p\u003e \u003ch3\u003eKey Specifications\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eAmperage: 45 A\u003c\/li\u003e \u003cli\u003ePoles: 3-Pole\u003c\/li\u003e \u003cli\u003eVoltage: 480 V\u003c\/li\u003e \u003cli\u003eType: Industrial circuit breaker\u003c\/li\u003e \u003cli\u003ePart number: HEF437045\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eIdeal Use Cases\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eScheduled maintenance on 3-phase 480V electrical panels that require exact part-number compatibility for quick, risk-free replacements.\u003c\/li\u003e \u003cli\u003eRetrofit projects where equipment originally used HEF437045 or an equivalent specification, ensuring seamless interoperability with existing protection schemes.\u003c\/li\u003e \u003cli\u003eRepairs in manufacturing or processing lines that rely on precise 3-pole protection to safeguard motors, drives, and other critical loads.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eInstallation \u0026amp; Compatibility Notes\u003c\/h3\u003e\n\u003cp\u003eBefore ordering, verify that the 3-pole, 45A, 480V configuration matches your panel’s requirements. The HEF437045 is intended as a like-for-like substitute where exact ratings and reference part numbers drive compatibility. If you’re refreshing an older installation or replacing a worn unit, this part provides a straightforward match to preserve electrical protection strategies without reengineering wiring or mounting layouts.\u003c\/p\u003e \u003ch3\u003ePractical Insights \u0026amp; Benefits\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eStreamlined procurement: Rely on the part number as the primary compatibility reference to avoid mismatches during reorder or stock replenishment.\u003c\/li\u003e \u003cli\u003eReduced downtime: Direct-fit replacement minimizes panel downtime and simplifies commissioning after installation.\u003c\/li\u003e \u003cli\u003eConsistent protection: Maintains the intended protection profile for three-phase systems operating at 480V, helping protect motors and downstream equipment from overcurrent events.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eDesigned for professionals who need dependable, exact-fit circuit protection, the HEF437045 delivers clarity in sourcing, reliability in operation, and confidence in maintenance planning—every time you work with 480V, 3-phase systems.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"AmpState","offers":[{"title":"Default Title","offer_id":46426440433826,"sku":"HEF437045","price":2010.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/master_generic_a085eff1-75dd-47ee-b131-4c8df8f0489b.png?v=1765492976","url":"https:\/\/www.ampstate.com\/products\/hef437045-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}