{"product_id":"mb423","title":"GE MB423 - 100A, 277VAC, 3-Pole, Circuit Breaker","description":"\u003cdiv\u003e\n\u003cp\u003eGE MB423 — a rugged 3-pole circuit breaker designed to protect three-phase systems in demanding electrical environments. Rated at 100A and up to 277V, this device delivers precise overcurrent protection where it matters most, in panelboards, switchboards, and control panels.\u003c\/p\u003e \u003cp\u003eKey features that matter in real-world use:\u003c\/p\u003e \u003cul\u003e \u003cli\u003eThree-pole configuration supports balanced protection across all phases in 3-phase systems, helping prevent phase unbalance and equipment damage.\u003c\/li\u003e \u003cli\u003e277VAC rating is ideal for commercial lighting circuits and three-phase motor loads commonly found in offices, retail, and light industrial settings.\u003c\/li\u003e \u003cli\u003eRugged design suited for industrial, commercial, and OEM applications where dependable protection and safe operation are critical in distribution panels and motor control centers.\u003c\/li\u003e \u003cli\u003eCompact form factor and straightforward installation for panelboards, switchboards, and control panels, reducing wiring complexity and space requirements.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eIdeal applications\u003c\/h3\u003e \u003cul\u003e \u003cli\u003ePanelboards and switchboards in commercial buildings with 277V lighting and 3-phase distribution.\u003c\/li\u003e \u003cli\u003eMotor control centers and industrial control panels requiring coordinated protection across all three phases.\u003c\/li\u003e \u003cli\u003eOEM equipment where reliable overcurrent protection is part of the essential safety and performance package.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eSpecifications at a glance\u003c\/h3\u003e \u003cul\u003e \u003cli\u003eCurrent rating: 100A\u003c\/li\u003e \u003cli\u003eVoltage rating: 277VAC\u003c\/li\u003e \u003cli\u003ePoles: 3-Pole\u003c\/li\u003e \u003cli\u003eBreaker type: Circuit Breaker\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003ePractical considerations and best practices:\u003c\/p\u003e \u003cul\u003e \u003cli\u003ePlan for future load growth by pairing the MB423 with compatible feeders and bus configurations in your distribution scheme.\u003c\/li\u003e \u003cli\u003eEnsure correct mounting orientation and wiring according to GE installation guidelines to maximize performance and longevity.\u003c\/li\u003e \u003cli\u003eIn environments with frequent inrush or motor starting, consider coordination with upstream protection devices to optimize selectivity and minimize nuisance trips.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eWith the GE MB423, you gain a trusted, purpose-built solution for safeguarding three-phase electrical systems, reducing unplanned downtime, and protecting critical equipment in both new installations and service upgrades.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"GE","offers":[{"title":"Default","offer_id":46390794682530,"sku":"MB423","price":259.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/circuit_breaker_generic_3ea78fcd-438e-4259-8aa7-ff8a201aa8a8.png?v=1765379953","url":"https:\/\/www.ampstate.com\/products\/mb423","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}