{"product_id":"abb-s203-k5-miniature-circuit-breaker-5a-3-pole-din-rail","title":"Abb s203-k5 Miniature Circuit Breaker 5A 3-pole Din Rail","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe ABB s203-k5 is a 3-pole miniature circuit breaker (MCB) rated for 440 VAC at 5 amps, designed for branch-circuit protection in industrial and commercial electrical distribution systems. It features a K-curve trip characteristic, which provides a delayed response to moderate overloads while tripping quickly under short-circuit conditions — making it suitable for circuits with inductive or transformer loads. The breaker mounts on standard DIN rail and uses screw terminals with arbitrary connection, accepting wire sizes from 18 to 4 AWG. Licensed electricians and panel builders are the primary installers for this device.\u003c\/p\u003e\n\u003cp\u003eThe s203-k5 is suited for use in industrial control panels, motor control centers, and commercial power distribution boards operating at 50 or 60 Hz. Its IP20 and IP40 enclosure ratings indicate protection against solid foreign objects in open and enclosed panel environments. The operating temperature range of -25 to 55 degrees C makes it appropriate for both indoor climate-controlled and unheated industrial spaces. The 3-pole configuration handles three-phase circuits in a compact footprint.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eK-curve trip characteristic for inductive and transformer load protection\u003c\/li\u003e\n  \u003cli\u003eInterrupt rating of 6 kA and 10 kA depending on configuration\u003c\/li\u003e\n  \u003cli\u003e3-pole design for three-phase branch-circuit protection\u003c\/li\u003e\n  \u003cli\u003eDIN rail mounting with screw terminals and arbitrary connection\u003c\/li\u003e\n  \u003cli\u003eAccepts 18 to 4 AWG wire sizes\u003c\/li\u003e\n  \u003cli\u003eIP20 and IP40 enclosure ratings for panel and enclosed installations\u003c\/li\u003e\n  \u003cli\u003eRated for 20,000 operating cycles\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style DIN rail-mounted miniature circuit breaker for use in standard IEC-compliant industrial control panels and three-phase commercial distribution systems.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation should be performed by a licensed electrician in accordance with the National Electrical Code (NEC) and any applicable local codes. De-energize the panel and verify the absence of voltage before mounting or wiring this breaker. Secure the unit firmly on a standard 35 mm DIN rail and torque screw terminals per the panel assembly documentation for the specific enclosure. Confirm that the connected load type and fault current levels are compatible with the K-curve trip characteristic and the interrupt rating before commissioning.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAmperage Rating\u003c\/strong\u003e: 5 A\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVoltage Rating\u003c\/strong\u003e: 440 VAC\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrequency Rating\u003c\/strong\u003e: 50\/60 Hz\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInterrupt Rating\u003c\/strong\u003e: 6 kA, 10 kA\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNumber of Poles\u003c\/strong\u003e: 3\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTrip Type\u003c\/strong\u003e: K Curve\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePower Rating\u003c\/strong\u003e: 3.9 W\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTerminal Type\u003c\/strong\u003e: Screw\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eConnection Type\u003c\/strong\u003e: Arbitrary\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWire Size\u003c\/strong\u003e: 18 to 4 AWG\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMounting Type\u003c\/strong\u003e: DIN Rail\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEnclosure Type\u003c\/strong\u003e: IP20, IP40\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInsulation Type\u003c\/strong\u003e: Group II\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOperating Temperature\u003c\/strong\u003e: -25 to 55 degrees C\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOperating Cycles\u003c\/strong\u003e: 20,000 cycles\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWidth\u003c\/strong\u003e: 52.5 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLength\u003c\/strong\u003e: 69 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeight\u003c\/strong\u003e: 88 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eColor\u003c\/strong\u003e: Black\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eStandard Information\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: ABB\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: s203-k5\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ABB","offers":[{"title":"Default Title","offer_id":51620341809458,"sku":"S203-K5","price":172.3,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/60f879fffc5e79b7f845c9ccf95ec9d1.jpg?v=1787342200","url":"https:\/\/voomisupply.com\/products\/abb-s203-k5-miniature-circuit-breaker-5a-3-pole-din-rail","provider":"Voomi Supply","version":"1.0","type":"link"}