{"product_id":"qsf-4033-400a-240v-3-phase-fusible-switch","title":"QSF-4033 - 400A, 240V, 3-Phase, Fusible, Switch","description":"\u003cdiv\u003eThe QSF-4033 is a rugged 400A, 240V, 3-Phase fusible switch engineered for dependable on\/off isolation and built-in overcurrent protection in demanding industrial and commercial settings. With a compact footprint and straightforward maintenance, it simplifies safe electrical control where reliability cannot be compromised. Key specifications at a glance\n- Model: QSF-4033\n- Amperage: 400A\n- Voltage: 240V\n- Phase: 3-Phase\n- Fusible design: Fusible switch for integrated protection Where it shines\n- Robust isolation and protection: This fusible switch provides immediate disconnection and branch protection, helping prevent damage to motors, panels, and downstream equipment during faults.\n- Versatile for common electrical configurations: Ideal as a motor disconnect on production lines, as a panelboard feeder switch, or for protecting branch circuits feeding critical loads.\n- Compact, maintainable form: A streamlined design that fits tighter electrical rooms or equipment enclosures, while allowing easy fuse access and replacement when maintenance is required. What makes QSF-4033 different\n- Integrated protection: Unlike non-fusible options, the QSF-4033 combines disconnection with overcurrent protection in a single device, reducing component count and simplifying wiring.\n- Three-phase reliability: Specifically built for 3-phase systems, ensuring balanced performance and consistent protection across all legs of the circuit.\n- Maintenance-friendly design: When a fuse operates, it’s straightforward to identify and replace the affected element, minimizing downtime and keeping your line running. Ideal use cases\n- Motor disconnects on conveyors, pumps, and fans in industrial and commercial facilities.\n- Feeder switches for panelboards delivering power to essential equipment.\n- Branch circuit protection where a compact, easily serviceable fusible switch is preferred. Practical considerations and tips\n- Ensure a correct fuse rating and type compatible with the 400A, 240V, 3-phase system for reliable protection.\n- Use the switch as part of a well-planned electrical protection strategy, coordinating with upstream and downstream protection devices.\n- Schedule regular inspections of the switch compartment to verify fuse integrity and secure connections, keeping downtime to a minimum. The QSF-4033 is the choice for operators who demand dependable isolation, straightforward maintenance, and built-in overcurrent protection in a compact 3-phase fusible switch. If your setup requires a reliable motor disconnect, panelboard feed, or branch circuit protector with a focused design and clear serviceability, the QSF-4033 delivers.\u003c\/div\u003e","brand":"Amp-State","offers":[{"title":"Default","offer_id":46390398419106,"sku":"QSF-4033","price":7687.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/qsf-4033-400a-240v-3-phase-fusible-switch-293.webp?v=1788874294","url":"https:\/\/www.ampstate.com\/products\/qsf-4033-400a-240v-3-phase-fusible-switch","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}