{"product_id":"lb3400","title":"Cutler Hammer LB3400 - 400A, 3-Pole, Circuit Breaker","description":"\u003cdiv\u003e\n\u003cp\u003eThe Cutler Hammer LB3400 is a rugged, high-capacity circuit breaker designed to deliver reliable overcurrent protection in demanding electrical environments. With a 400A rating and a three-pole configuration, it’s built to handle the demands of three-phase power distribution with precision and safety.\u003c\/p\u003e \u003cp\u003eKey features that set the LB3400 apart:\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eCurrent rating:\u003c\/strong\u003e 400A — built to safeguard heavy feeder circuits and large motor loads without nuisance tripping.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePoles:\u003c\/strong\u003e 3-Pole — ideal for three-phase panelboards, switchboards, and control panels where balanced protection is essential.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eBreaker type:\u003c\/strong\u003e Circuit Breaker — provides automatic interruption during overcurrent events to protect wiring and equipment.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVersatile mounting and integration:\u003c\/strong\u003e Suitable for installation in distribution panels and motor control centers, as well as OEM applications requiring robust overcurrent protection.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eApplication breadth:\u003c\/strong\u003e Trusted choice for industrial and commercial settings where dependable operation and safety are non-negotiable.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eWhy this matters in real-world use cases:\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eIn a manufacturing line with multiple large motors, the LB3400 helps prevent cascading faults by isolating the faulty section quickly, reducing downtime and equipment damage.\u003c\/li\u003e \u003cli\u003eFor a distribution panel serving critical facilities, the 3-pole configuration ensures balanced protection across all three phases, supporting stable operation and easier fault diagnosis.\u003c\/li\u003e \u003cli\u003eIn OEM projects, the LB3400 offers a reliable baseline protection device that teams can trust to meet stringent performance requirements without compromising panel space or compatibility.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003ePractical considerations for deployment:\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eEnsure compatibility with your panelboard or switchboard’s bus configuration and three-phase system design to maximize protection and reliability.\u003c\/li\u003e \u003cli\u003eUse in motor control centers where dependable, immediate disconnection under fault conditions is essential to protect motors, drives, and feeders.\u003c\/li\u003e \u003cli\u003ePair with appropriate upstream protective devices and scene-appropriate fault-setting practices to optimize safety and uptime.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eChoosing the Cutler Hammer LB3400 means opting for a durable, industrial-grade overcurrent protection solution that keeps distribution panels, motor control centers, and critical electrical systems safe and operational. With its proven 400A, 3-Pole configuration, this circuit breaker is a strategic fit for applications that demand consistent performance, reduced risk, and long service life.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Cutler Hammer","offers":[{"title":"Default","offer_id":46390620553378,"sku":"LB3400","price":12.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/circuit_breaker_generic_1c25d83a-9d99-4f58-8af9-ca17a9ebf9ce.png?v=1765378270","url":"https:\/\/www.ampstate.com\/products\/lb3400","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}