{"product_id":"square-d-fh360301021-circuit-breaker","title":"Square D | FH360301021 | Circuit Breaker | 30A | 3-Pole | 600V | Plug-In","description":"\u003cdiv\u003e\n\u003cp\u003eThe Square D FH360301021 is a 30A, 3-pole, 600V plug-in circuit breaker crafted for reliable protection in industrial and commercial electrical systems. Designed for maintenance, retrofit, and replacement projects where exact compatibility matters, this part-reference is the trusted choice when you need a precise fit.\u003c\/p\u003e \u003ch3\u003eKey specifications\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eAmperage:\u003c\/strong\u003e 30 A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePoles:\u003c\/strong\u003e 3-Pole\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVoltage:\u003c\/strong\u003e 600 V\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eMounting:\u003c\/strong\u003e Plug-In\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePart reference:\u003c\/strong\u003e FH360301021\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWhy this plug-in 3‑pole breaker matters\u003c\/h3\u003e\n\u003cp\u003eChoosing a plug-in design minimizes installation time and downtime, making it optimal for field retrofits and panel upgrades. The 3‑pole configuration provides balanced protection across three-phase systems, helping prevent uneven loading and reducing the risk of nuisance trips. With a 30A rating, it protects circuits that require reliable, mid-range current capacity without overly restricting performance.\u003c\/p\u003e \u003ch3\u003eUse cases and ideal environments\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eMaintenance and retrofit projects in commercial facilities and industrial controls with three-phase power\u003c\/li\u003e \u003cli\u003eReplacement in Square D panels that specify FH360301021 compatibility\u003c\/li\u003e \u003cli\u003eApplications in data centers, manufacturing lines, and other environments operating at 600V\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eCompatibility and fit guidance\u003c\/h3\u003e\n\u003cp\u003eAlways confirm fit and ratings before ordering. The part number FH360301021 is the best reference for ensuring compatibility with your panel. This plug-in breaker is intended for Square D systems designed to accept plug-in devices at 600V and 3-pole configurations.\u003c\/p\u003e \u003ch3\u003ePractical installation and care\u003c\/h3\u003e\n\u003cp\u003eBefore servicing, shut off power and reference your panel’s labeling to verify bus compatibility and mounting requirements. Use the exact FH360301021 part number when replacing a breaker to maintain protective coordination and system reliability. If in doubt, consult a qualified electrician to ensure secure mounting and proper protection for your specific circuit.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Square D","offers":[{"title":"Default Title","offer_id":46426638614690,"sku":"FH360301021","price":510.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/master_generic_16d3a2fb-5d93-424c-9206-5031ec4b178f.png?v=1765492977","url":"https:\/\/www.ampstate.com\/products\/square-d-fh360301021-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}