{"product_id":"federal-pioneer-qmqb4836b-400a-600v-3-pole-panelboard-switch","title":"Federal Pioneer QMQB4836B - 400A, 600V, 3-Pole Panelboard Switch \/ Switchboard Unit | AmpState","description":"\u003cdiv\u003e\n\u003cp\u003e\u003cstrong\u003eFederal Pioneer QMQB4836B\u003c\/strong\u003e is a 400 A, 600 V, 3-pole fusible panelboard switch designed for lighting and distribution panelboards. When paired with the appropriate upstream protection and fuse class, it delivers reliable load switching and overcurrent protection for downstream circuits, all within the panelboard footprint.\u003c\/p\u003e \u003ch3\u003eThree-pole design for true three-phase control\u003c\/h3\u003e\n\u003cp\u003eThis is a true three-pole switch that supports balanced three‑phase systems. In faults or during maintenance, it disconnets all three phases in unison, ensuring complete isolation and reducing the risk of partial energization on downstream loads.\u003c\/p\u003e \u003ch3\u003eKey specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAmperage:\u003c\/strong\u003e 400 A\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVoltage rating:\u003c\/strong\u003e 600 V\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePoles:\u003c\/strong\u003e 3\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries:\u003c\/strong\u003e QMQB\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e Federal Pioneer \/ Federal Pacific\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Fusible panelboard switch for lighting and distribution panelboards\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWhat makes it unique\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eDedicated fusible switch integrated into a panelboard footprint, enabling synchronized disconnection of all phases.\u003c\/li\u003e\n\u003cli\u003ePart of the QMQB series, ensuring compatibility with Federal Pioneer panelboard layouts for straightforward installation and serviceability.\u003c\/li\u003e\n\u003cli\u003eDurable design optimized for dependable load switching and protective functionality in demanding commercial environments.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eIdeal applications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eNew installations or retrofits in commercial buildings, schools, retail environments, and light industrial facilities where a robust fusible switch is required within the panelboard footprint.\u003c\/li\u003e\n\u003cli\u003eUse as a protective interface for feeders and major circuits, enabling clean isolation during maintenance and fault events.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eHow it works\u003c\/h3\u003e\n\u003cp\u003eWhen used with appropriate upstream protection and fuse class, the QMQB4836B provides controlled disconnection and reliable overcurrent protection for downstream circuits. This facilitates rapid fault isolation and minimizes unnecessary interruptions across the broader electrical distribution network.\u003c\/p\u003e \u003ch3\u003eInstallation and compatibility\u003c\/h3\u003e\n\u003cp\u003eVerify the device footprint matches your panelboard and ensure upstream protection is sized to the 400 A rating. The 3‑pole configuration is ideal for three‑phase distributions, and mounting aligns with standard Federal Pioneer panelboard layouts for straightforward installation and serviceability.\u003c\/p\u003e \u003ch3\u003eWhy choose this Federal Pioneer panelboard switch\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eDurable, predictable performance in lighting and distribution panelboards.\u003c\/li\u003e\n\u003cli\u003eBalanced load switching with integrated protection to simplify maintenance and improve safety.\u003c\/li\u003e\n\u003cli\u003eReliable fault isolation that supports stable operation in busy commercial environments.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\u003cem\u003eNote: Confirm compatibility with your panelboard footprint and upstream protection scheme in your project specifications.\u003c\/em\u003e\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Federal Pioneer \/ Federal Pacific","offers":[{"title":"Default Title","offer_id":46362093060258,"sku":"QMQB4836B","price":1110.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/panel_mount_switches_p1_664cb2fc-567c-4741-8dc1-0fa4f2e63c68.png?v=1764709846","url":"https:\/\/www.ampstate.com\/products\/federal-pioneer-qmqb4836b-400a-600v-3-pole-panelboard-switch","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}