{"product_id":"siemens-lgb3b020","title":"Siemens LGB3B020 20A 3-Pole 480 V Circuit Breaker Potential Transformer","description":"\u003cdiv\u003e\n\u003cp\u003eSiemens LGB3B020 is a rugged, three-pole circuit breaker engineered for demanding 3‑phase power distributions. With a 20 A current rating per pole and a 480 V voltage rating, this unit delivers reliable protection for motors, feeders, and critical equipment in industrial environments. The part number LGB3B020 makes ordering and replacement straightforward within Siemens panels and protection schemes.\u003c\/p\u003e \u003cp\u003eDesigned to interrupt faults quickly across all three phases, this 3‑pole breaker promotes coordinated protection that helps minimize damage to downstream equipment and wiring. Its robust construction and precise trip characteristics are built to withstand the demands of busy electrical rooms and manufacturing floors.\u003c\/p\u003e \u003ch3\u003eKey specifications\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eCurrent rating:\u003c\/strong\u003e 20 A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePoles:\u003c\/strong\u003e 3\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVoltage rating:\u003c\/strong\u003e 480 V\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e LGB3B020\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eConfiguration:\u003c\/strong\u003e 3‑pole circuit protection\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWhy this model stands out\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eThree-pole coordination:\u003c\/strong\u003e Simultaneous disconnection of all phases reduces the risk of asymmetric faults, protecting both equipment and the integrity of the power distribution system.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eSiemens integration:\u003c\/strong\u003e Seamless compatibility with Siemens panels, accessories, and protection schemes simplifies installation, maintenance, and future upgrades.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePotential transformer-ready:\u003c\/strong\u003e Designed to fit into protection and metering setups that use potential transformers, enabling accurate monitoring and coordination in complex networks.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eIdeal use cases\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eMotor circuits for conveyors, pumps, compressors, and fans powered from 480 V three‑phase systems.\u003c\/li\u003e \u003cli\u003eFeeder protection in industrial control panels, switchgear rooms, and manufacturing lines.\u003c\/li\u003e \u003cli\u003ePanel upgrades or replacements where Siemens LGB series breakers are the standard reference.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eWith the Siemens LGB3B020, you get precise, dependable protection designed for real-world industrial power needs. Its 20 A per‑pole rating and 3‑pole, 480 V configuration provide a scalable solution for safe and efficient three-phase distribution, while its compatibility with potential transformer-based monitoring supports advanced protection strategies. For engineers and technicians seeking a reliable, easy-to-specify circuit interrupter within Siemens ecosystems, the LGB3B020 is a thoughtful, future‑ready choice.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Siemens","offers":[{"title":"Default Title","offer_id":46423585259682,"sku":"LGB3B020","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\/siemens-lgb3b020","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}