{"product_id":"nef437045-circuit-breaker","title":"NEF437045 | Circuit Breaker | 45A | 3-Pole | 480V","description":"\u003cdiv\u003e\n\u003cp\u003eThe NEF437045 circuit breaker is a purpose-built solution for demanding industrial environments that rely on robust three-phase protection. With a 45A rating and a 3-pole design, it provides synchronized disconnection across all phases in 480V systems, helping safeguard equipment and maintain safe shutdowns during faults.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eWhy this model matters for your setup\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003ePrecise compatibility\u003c\/strong\u003e: The part number NEF437045 serves as the primary reference for matching your equipment, making retrofit and replacement straightforward when the exact specification is required.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThree-pole protection\u003c\/strong\u003e: A 3-pole configuration ensures all three phases trip together, reducing the risk of uneven loads and protecting three-phase circuits from partial faults.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e480V industrial readiness\u003c\/strong\u003e: Designed for typical industrial distribution networks, this breaker supports common 480V systems found in manufacturing lines, facilities, and large machinery controls.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eTrusted 45A protection\u003c\/strong\u003e: The 45A rating is ideal for medium-load circuits and motor-driven equipment, offering reliable overcurrent protection without unnecessary nuisance tripping when properly applied.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eMaintenance, retrofit, and replacement\u003c\/strong\u003e: Built to meet continuing service needs, it supports ongoing maintenance programs and single-component upgrades without extensive panel modifications.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eUse cases and applications\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eMotor control centers (MCCs) and large equipment panels that run on 480V three-phase power\u003c\/li\u003e \u003cli\u003eRetrofit projects where old breakers require exact 3-pole, 480V, 45A specifications\u003c\/li\u003e \u003cli\u003eMaintenance workflows that demand quick, compatible replacements to minimize downtime\u003c\/li\u003e \u003cli\u003eNew installations in industrial facilities seeking reliable, standards-aligned protection for critical circuits\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eHow to verify fit and install with confidence\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eUse the part number NEF437045 as your primary reference to confirm compatibility with your panel and distribution equipment.\u003c\/li\u003e \u003cli\u003eEnsure the circuit’s current demand aligns with a 45A rating and that the system voltage is 480V.\u003c\/li\u003e \u003cli\u003eCheck that the breaker’s 3-pole configuration matches your busbar layout and the required shutdown behavior for all phases.\u003c\/li\u003e \u003cli\u003eBefore ordering, double-check the surrounding enclosure space and the terminal arrangement to ensure a clean, proper fit.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003ePractical tips for installation and operation\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eCoordinate with a qualified electrical professional to confirm electrical clearances and wiring terminations align with NEC guidelines.\u003c\/li\u003e \u003cli\u003ePlan for safe handling and de-energization procedures to protect personnel during replacement or maintenance.\u003c\/li\u003e \u003cli\u003eDocument the replacement with the exact part number and ratings to assist future service and audits.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eIn environments where reliability and precise spec matching matter, the NEF437045 circuit breaker delivers predictable protection for 480V three-phase circuits. Its targeted amperage, three-pole design, and strict compatibility reference empower you to execute maintenance and upgrades with confidence, reducing downtime and preserving system integrity.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"AmpState","offers":[{"title":"Default Title","offer_id":46424508760226,"sku":"NEF437045","price":310.0,"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\/nef437045-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}