{"product_id":"abb-s203u-k4","title":"ABB S203U-K4 4A 3-Pole 240 V Circuit Breaker Potential Transformer","description":"\u003cdiv\u003e\n\u003cp\u003e\u003cstrong\u003eABB S203U-K4 4A 3-Pole 240 V Circuit Breaker\u003c\/strong\u003e — Part Number S203U-K4. This genuine ABB protection device is engineered for reliable, three-phase circuit protection in industrial panels and switchgear.\u003c\/p\u003e \u003cp\u003eWith a nominal current rating of \u003cstrong\u003e4 A\u003c\/strong\u003e, a \u003cstrong\u003e3-pole\u003c\/strong\u003e configuration, and a \u003cstrong\u003e240 V\u003c\/strong\u003e rated voltage, this circuit breaker provides precise protection in standard 3-phase power systems. Its compact, robust design is built to withstand the demands of modern automation environments while delivering consistent performance across varying load conditions.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eCurrent rating:\u003c\/strong\u003e 4 A (nominal)\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePoles:\u003c\/strong\u003e 3 (three-phase protection)\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVoltage rating:\u003c\/strong\u003e 240 V\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePart number:\u003c\/strong\u003e S203U-K4\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eKey benefits and differentiators:\u003c\/strong\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eExact trip coordination\u003c\/strong\u003e aligns with other protective devices in a 3-phase network, helping to isolate faults quickly and minimize equipment damage.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePhase-balanced protection\u003c\/strong\u003e via a three-pole design ensures all live conductors are simultaneously disconnected during a fault, reducing arc flash risk and equipment wear.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eABB engineering reliability\u003c\/strong\u003e backed by ABB's global support and supply chain, enabling easier sourcing and warranty coverage for critical infrastructure.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVersatile integration\u003c\/strong\u003e suitable for control panels, motor control centers, and distribution boards in industrial settings that run on 240 V three-phase power.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eIdeal use cases\u003c\/strong\u003e include motor-controlled conveyors, packaging lines, CNC machines, HVAC equipment, and other industrial automation setups where dependable, synchronized disconnection is essential. It’s particularly valuable in environments where space is at a premium and a dedicated 3P 240 V protection device is required.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eInstallation and compatibility tips\u003c\/strong\u003e:\n- Confirm that the panel or enclosure accommodates a 3-pole 240 V ABB device of the S203U-K4 family.\n- Use only compatible accessories and replacement parts from ABB to maintain protective coordination and warranty.\n- Maintain clear labeling of the protective device within the panel for safer maintenance and faster fault diagnosis.\u003c\/p\u003e \u003cp\u003eWhether you’re upgrading an aging panel or building a new 3-phase distribution system, the ABB S203U-K4 4A 3-Pole 240 V Circuit Breaker delivers dependable protection with precise, predictable performance you can trust in demanding industrial environments.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"ABB","offers":[{"title":"Default Title","offer_id":46423145873570,"sku":"S203U-K4","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\/abb-s203u-k4","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}