{"product_id":"abb-st202m-k20","title":"ABB ST202M-K20 20A 2-Pole 480 V Circuit Breaker Potential Transformer","description":"\u003cdiv\u003e\n\u003cp\u003eThe ABB ST202M-K20 is a compact, dependable circuit breaker designed to safeguard electrical distribution in demanding environments. With a 20 A current rating, a two-pole configuration, and a 480 V operating capacity, this device delivers reliable overcurrent protection for both lines in 3-phase systems while fitting neatly into ABB-compatible panels and gear.\u003c\/p\u003e \u003ch3\u003eWhy choose the ABB ST202M-K20\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eAccurate protection\u003c\/strong\u003e at 20 A to prevent nuisance trips and protect wiring and motors from overloads and short circuits.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eTwo-pole design\u003c\/strong\u003e ensures simultaneous disconnection of both conductors in 480 V circuits, enhancing safety and simplifying automatic shutdown schemes.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e480 V rating\u003c\/strong\u003e makes it suitable for industrial and commercial distribution where higher-voltage feeders are common.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eTrusted ABB engineering\u003c\/strong\u003e—part number ST202M-K20 aligns with ABB panels, bus systems, and protective schemes, supporting consistent performance across installations.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePT-friendly protection workflows\u003c\/strong\u003e when used within protection schemes that rely on potential transformers for measurement and metering—maintaining compatibility with standard protection architectures.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eReady for replacements and upgrades\u003c\/strong\u003e in existing ABB setups, ensuring a precise fit and predictable trip characteristics within established systems.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eIdeal for\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eIndustrial control panels, switchgear, and motor control centers that require solid, meet-spec overcurrent protection.\u003c\/li\u003e \u003cli\u003eElectrical distribution in commercial facilities where 480 V systems are standard and reliable shutdown is essential.\u003c\/li\u003e \u003cli\u003ePanel refurbishments or upgrades where ABB-ST-series components are preferred for consistency and interchangeability.\u003c\/li\u003e \u003cli\u003eSystems using potential transformer-based metering or protection schemes that benefit from compatible breakers like the ST202M-K20.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eApplications and use cases\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eFeeder protection for 480 V circuits feeding pumps, fans, and HVAC equipment with quick, dependable isolation during faults.\u003c\/li\u003e \u003cli\u003eMain or sub-feed protection in distribution panels where a 2-pole device ensures coordinated shutdown of both hot conductors.\u003c\/li\u003e \u003cli\u003eReplacement in existing ABB installations to maintain electrical performance without reconfiguring panel layouts.\u003c\/li\u003e \u003cli\u003eNew installations in facilities that standardize on ABB protection components for uniform maintenance and part availability.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eSpecifications at a glance\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eCurrent rating: \u003cstrong\u003e20 A\u003c\/strong\u003e\n\u003c\/li\u003e \u003cli\u003ePoles: \u003cstrong\u003e2\u003c\/strong\u003e\n\u003c\/li\u003e \u003cli\u003eVoltage rating: \u003cstrong\u003e480 V\u003c\/strong\u003e\n\u003c\/li\u003e \u003cli\u003ePart number: \u003cstrong\u003eST202M-K20\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eFor optimal results, confirm compatibility with your existing ABB panels and consult the product datasheet for exact installation dimensions and mounting requirements. The ABB ST202M-K20 offers a reliable, ABB-branded solution for protecting critical electrical infrastructure while supporting standard metering and protection schemes that use potential transformers.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"ABB","offers":[{"title":"Default Title","offer_id":46423194173602,"sku":"ST202M-K20","price":411.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/abb-st202m-k20-20a-2-pole-480-v-circuit-breaker-potential-transformer-873.webp?v=1789281331","url":"https:\/\/www.ampstate.com\/products\/abb-st202m-k20","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}