{"product_id":"allen-bradley-1492-cb1g040","title":"Allen-Bradley 1492-CB1G040 4A 1-Pole 277 V Circuit Breaker","description":"\u003cdiv\u003e\n\u003cp\u003e\u003cstrong\u003eAllen-Bradley 1492-CB1G040\u003c\/strong\u003e is a compact, single-pole circuit breaker engineered for reliable protection of 277 V circuits. With a precise 4 A rating, this device is purpose-built for safeguarding smaller, single‑phase loads in commercial and light industrial electrical systems. If you’re building or upgrading panels that rely on Allen-Bradley’s 1492-series protection, this breaker provides a seamless, predictable level of protection and easy interchangeability.\u003c\/p\u003e \u003cp\u003eWhy this 4 A, 1‑pole breaker stands out\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eExact 4 A protection for 277 V circuits\u003c\/strong\u003e: Ideal for limiting overloads on lighting feeders, small control circuits, and other modest loads within commercial buildings.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e1‑pole design\u003c\/strong\u003e: Delivers focused protection to a single hot conductor, simplifying panel layouts and fault isolation in single‑phase distributions.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e277 V suitability\u003c\/strong\u003e: Tuned for standard commercial power distribution found in offices, retail spaces, schools, and healthcare facilities that use 277 VAC lighting and equipment.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eProven Allen-Bradley reliability\u003c\/strong\u003e: Built to perform consistently in demanding environments, with design discipline that aligns with other 1492-series devices for straightforward maintenance and replacement.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003ePractical use cases you’ll appreciate\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eProtect 277 V lighting feeders in large office complexes or hospitality venues, preventing nuisance trips while ensuring safety for wiring and fixtures.\u003c\/li\u003e \u003cli\u003eGuard small 277 V control circuits in building automation, HVAC controller inputs, and fans where a modest current limit helps avoid equipment damage.\u003c\/li\u003e \u003cli\u003eReplace or extend existing protection in panels that accept 1492‑series single‑pole breakers, preserving system compatibility and consistent performance.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eWhat makes it work in real-world installs\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eTargeted current protection\u003c\/strong\u003e minimizes the risk of overcurrent damage without overreacting to normal load fluctuations.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eSingle-pole simplicity\u003c\/strong\u003e reduces wiring complexity and makes testing and maintenance more straightforward in mixed-commercial environments.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eCompatibility mindset\u003c\/strong\u003e supports modular panel designs, enabling technicians to scale protection as circuits evolve—without overhauling the entire distribution page.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eSpecifications at a glance\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003ePart number:\u003c\/strong\u003e 1492-CB1G040\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eCurrent rating:\u003c\/strong\u003e 4 A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePoles:\u003c\/strong\u003e 1\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVoltage rating:\u003c\/strong\u003e 277 V\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eTip for installation and use\u003c\/p\u003e\n\u003cp\u003eWhen integrating the \u003cstrong\u003eAllen-Bradley 1492-CB1G040\u003c\/strong\u003e into an existing panel, verify that the enclosure and bus configuration support 1492-series single‑pole breakers. Follow standard electrical safety practices, refer to your control panel’s installation guide for torque and wiring instructions, and ensure the protected load stays within the 4 A rating to maintain safe, reliable operation.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":46423177822370,"sku":"1492-CB1G040","price":510.0,"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\/allen-bradley-1492-cb1g040","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}