{"product_id":"general-electric-139c4378g21","title":"General Electric 139C4378G21 575 V Circuit Breaker","description":"\u003cdiv\u003e\n\u003cp\u003e\u003cstrong\u003eGeneral Electric 139C4378G21 575 V Circuit Breaker\u003c\/strong\u003e is a rugged, high-voltage protection device designed to safeguard industrial electrical systems. With the exact part number \u003cem\u003e139C4378G21\u003c\/em\u003e and a \u003cem\u003e575 V\u003c\/em\u003e rating, this GE circuit breaker delivers reliable overcurrent protection for feeders, motors, and control circuits in demanding environments.\u003c\/p\u003e \u003ch2\u003eWhy this GE circuit breaker stands out\u003c\/h2\u003e\n\u003cp\u003eRather than a generic protection component, this unit is a genuine General Electric part crafted to integrate seamlessly with GE panels and equipment that require the \u003cem\u003e139C4378G21\u003c\/em\u003e specification. The 575 V rating enables it to handle high-voltage distribution setups, helping to minimize downtime by quickly interrupting fault currents and preventing equipment damage.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eExact part number match:\u003c\/strong\u003e 139C4378G21 ensures compatibility with GE electrical systems calling for this model.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eHigh-voltage capacity:\u003c\/strong\u003e 575 V rating suited for commercial and light-industrial distributions.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eReliable protection:\u003c\/strong\u003e interrupts fault currents to safeguard transformers, cables, and motors.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eOEM integrity:\u003c\/strong\u003e designed to fit GE panels and distribution boards without modification.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch2\u003eIdeal use cases\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003eReplacing a worn or failing circuit breaker in GE equipment to restore reliable protection for 575 V feeders.\u003c\/li\u003e \u003cli\u003eOEM replacement in industrial control panels that operate at high voltage.\u003c\/li\u003e \u003cli\u003eRetrofits or upgrades for systems requiring the \u003cem\u003e139C4378G21\u003c\/em\u003e part number to maintain compatibility and performance.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch2\u003eHow to confirm it’s the right fit\u003c\/h2\u003e\n\u003cp\u003eCompare your panel or equipment requirements with the \u003cem\u003e139C4378G21\u003c\/em\u003e model and verify the voltage rating of \u003cem\u003e575 V\u003c\/em\u003e. If your GE installation specifies this part number, this breaker is designed to drop into place with minimal effort and maximum reliability.\u003c\/p\u003e \u003ch2\u003eTips for installation and maintenance\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003eEngage a qualified electrician for installation to ensure safe, correct mounting and electrical connections.\u003c\/li\u003e \u003cli\u003eUse appropriate torque and mounting hardware as recommended for GE circuit breakers.\u003c\/li\u003e \u003cli\u003eStore and handle the breaker per GE guidelines to prevent damage before installation.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eFor engineers and technicians maintaining GE-based electrical distributions, the General Electric \u003cstrong\u003e139C4378G21\u003c\/strong\u003e \u003cstrong\u003e575 V Circuit Breaker\u003c\/strong\u003e offers a dependable, high-voltage protection solution that aligns with your equipment’s design and performance expectations.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"General Electric","offers":[{"title":"Default Title","offer_id":46423628578978,"sku":"139C4378G21","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\/general-electric-139c4378g21","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}