{"product_id":"schneider-electric-fja140403","title":"Schneider Electric FJA140403 40A 1-Pole 277 V Circuit Breaker Potential Transformer","description":"\u003cdiv\u003e\n\u003cp\u003e\u003cstrong\u003eSchneider Electric FJA140403\u003c\/strong\u003e is a dependable 40 A, 1-pole circuit breaker built for 277 V electrical systems. This circuit breaker potential transformer variant is designed to protect feeders and branch circuits from overloads and short circuits, helping maintain uptime in commercial environments where 277 V distribution is common. It’s engineered to integrate with metering and monitoring workflows, providing a measurement-ready protection solution.\u003c\/p\u003e \u003cp\u003eWith this 277 V circuit breaker, you get predictable trip performance, straightforward compatibility with Schneider Electric panels, and a compact design that fits standard distribution setups. The FJA140403 is a practical choice for facilities managers, electrical contractors, and engineers who prioritize reliability and easy asset replacement in busy commercial spaces.\u003c\/p\u003e \u003ch3\u003eKey specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCurrent rating:\u003c\/strong\u003e 40 A\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePoles:\u003c\/strong\u003e 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVoltage rating:\u003c\/strong\u003e 277 V\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart number:\u003c\/strong\u003e FJA140403\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWhy this circuit breaker stands out\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eOptimized for 277 V systems common in commercial buildings, making it ideal for protecting lighting feeders and general-purpose circuits.\u003c\/li\u003e\n\u003cli\u003eSingle-pole design delivers targeted protection while minimizing panel footprint where space matters.\u003c\/li\u003e\n\u003cli\u003eBacked by Schneider Electric’s trusted protection lineage, ensuring seamless compatibility with existing panels and replacement parts within the same ecosystem.\u003c\/li\u003e\n\u003cli\u003eDesigned for straightforward installation and maintenance, reducing downtime during replacements or upgrades.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eBest-use scenarios\u003c\/h3\u003e\n\u003cp\u003eIdeal for offices, retail spaces, schools, and facilities with 277 V distribution. Use it to protect lighting circuits, power feeds to small equipment, or as part of a broader protection strategy in electrical rooms. If your system operates at 277 V and you need a reliable, 40 A, single-pole protective device, the FJA140403 provides a proven solution that aligns with Schneider Electric’s standards and supports metering-related workflows through its potential-transformer capability.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Schneider Electric","offers":[{"title":"Default Title","offer_id":46423232807074,"sku":"FJA140403","price":1558.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/master_generic_229276d9-908d-46df-93e5-6fe31866e0ff.png?v=1765492975","url":"https:\/\/www.ampstate.com\/products\/schneider-electric-fja140403","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}